Berkshire Hathaway (BRK.B)
NYSE: BRK.B · Fire, Marine & Casualty Insurance · Omaha, NE · filing with the SEC since 1998
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 20265,708 patents granted to the 98 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Berkshire Hathaway’s names, not what it holds today.
Patents granted
5,708
4,747 utility, 937 design, 22 reissue, 2 statutory invention registration, 1976 to Dec 31, 2025
Granted in 2025
197
Against 208 in 2024 and 215 in 2023
Applications published
3,481
210 of them in 2025
Names they are printed under
98
a subsidiary
By yearGrantedApplications published
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Machine tools154
Basic materials chemistry100
Surface technology, coating95
Transport74
Electrical machinery, apparatus, energy66
Macromolecular chemistry, polymers62
Computer technology53
Handling46
Other special machines36
Furniture, games35
Civil engineering34
Textile and paper machines30
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name98 counted
The Lubrizol Corporation a subsidiary
US, as the owner printed on each patent
457 published
Columbia Insurance Company a subsidiary
US, as the owner printed on each patent
75 published
Johns Manville a subsidiary
US, as the owner printed on each patent
75 published
Iscar, Ltd. a subsidiary
IL, as the owner printed on each patent. 20 more under the same name are not counted (printed in TR, printed in IE, printed in US)
317 published
TUNGALOY CORPORATION a subsidiary
JP, as the owner printed on each patent
282 published
Lubrizol Advanced Materials, Inc. a subsidiary
US, as the owner printed on each patent
231 published
JOHNS MANVILLE a subsidiary
named as the applicant on its applications, in US
434 published
BNSF Railway Company a subsidiary
US, as the owner printed on each patent
172 published
The Lubrizol Corporation a subsidiary
named as the applicant on its applications, in US
255 published
Columbia Insurance Company a subsidiary
named as the applicant on its applications, in US
236 published
Duracell Inc. a subsidiary
US, as the owner printed on each patent
1 published
DURACELL U.S. OPERATIONS, INC. a subsidiary
US, as the owner printed on each patent
46 published
TaeguTec Ltd. a subsidiary
KR, as the owner printed on each patent
65 published
Lubrizol Advanced Materials, Inc. a subsidiary
named as the applicant on its applications, in US
158 published
SPS TECHNOLOGIES, LLC a subsidiary
US, as the owner printed on each patent. 1 more under the same name are not counted (printed in GB)
31 published
Marmon Foodservice Technologies, Inc. a subsidiary
US, as the owner printed on each patent
40 published
Shaw Industries Group, Inc. a subsidiary
US, as the owner printed on each patent. 37 more under the same name are not counted (printed in CA)
38 published
The Pampered Chef, Ltd. a subsidiary
US, as the owner printed on each patent
2 published
Iscar, Ltd. a subsidiary
named as the applicant on its applications, in IL
85 published
TITANIUM METALS CORPORATION a subsidiary
US, as the owner printed on each patent
30 published
Shaw Industries Group, Inc. a subsidiary
named as the applicant on its applications, in US
66 published
PCC Airfoils, Inc. a subsidiary
US, as the owner printed on each patent
9 published
Marmon Holdings, Inc. a subsidiary
US, as the owner printed on each patent. 3 more under the same name are not counted (printed in GB)
1 published
DURACELL U.S. OPERATIONS, INC. a subsidiary
named as the applicant on its applications, in US. 4 more under the same name are not counted (printed in DE)
47 published
Bell Laboratories, Inc. a subsidiary
US, as the owner printed on each patent
5 published
Brooks Sports, Inc. a subsidiary
US, as the owner printed on each patent
2 published
Ingersoll Cutting Tool Company a subsidiary
US, as the owner printed on each patent
10 published
BNSF Railway Company a subsidiary
named as the applicant on its applications, in US
35 published
Russell Brands, LLC a subsidiary
US, as the owner printed on each patent
9 published
Union Tank Car Company a subsidiary
US, as the owner printed on each patent
3 published
LEACHGARNER, INC. a subsidiary
US, as the owner printed on each patent
0 published
Mitek Corp., Inc. a subsidiary
named as the applicant on its applications, in US
28 published
H.H. Brown Shoe Company, Inc. a subsidiary
US, as the owner printed on each patent
0 published
PCC STRUCTURALS, INC. a subsidiary
US, as the owner printed on each patent
11 published
TUNGALOY CORPORATION a subsidiary
named as the applicant on its applications, in JP. 1 more under the same name are not counted (printed in FR)
24 published
The Lubrizol Corporation, a corporation of the State of Ohio a subsidiary
US, as the owner printed on each patent
24 published
FLIGHTSAFETY INTERNATIONAL INC. a subsidiary
US, as the owner printed on each patent
11 published
LiquidPower Specialty Products Inc. a subsidiary
US, as the owner printed on each patent
1 published
Liquidpower Specialty Products Inc. a subsidiary
named as the applicant on its applications, in US
19 published
Wyman-Gordon Company a subsidiary
US, as the owner printed on each patent
0 published
Cannon-Muskegon Corporation a subsidiary
US, as the owner printed on each patent
2 published
Cerro Wire LLC a subsidiary
US, as the owner printed on each patent
5 published
Cerro Wire LLC a subsidiary
named as the applicant on its applications, in US
14 published
Russell Brands, LLC a subsidiary
named as the applicant on its applications, in US
14 published
Union Underwear Company, Inc. a subsidiary
US, as the owner printed on each patent
0 published
Benjamin Moore & Co. a subsidiary
US, as the owner printed on each patent
2 published
Union Tank Car Company a subsidiary
named as the applicant on its applications, in US
13 published
Precision Castparts Corp. a subsidiary
US, as the owner printed on each patent
1 published
Fruit of the Loom, Inc. a subsidiary
US, as the owner printed on each patent
0 published
TAEGUTEC LTD. a subsidiary
named as the applicant on its applications, in KR
11 published
FOREST RIVER, INC. a subsidiary
named as the applicant on its applications, in US
10 published
RICHLINE GROUP, INC. a subsidiary
US, as the owner printed on each patent
3 published
Procor Ltd. a subsidiary
CA, as the owner printed on each patent
0 published
SMILE MAKERS, LLC a subsidiary
US, as the owner printed on each patent
0 published
SMILE MAKERS, LLC a subsidiary
named as the applicant on its applications, in US
8 published
Brooks Sports, Inc. a subsidiary
named as the applicant on its applications, in US
7 published
Pilot Travel Centers LLC a subsidiary
named as the applicant on its applications, in US
7 published
Fechheimer Brothers Company a subsidiary
US, as the owner printed on each patent
2 published
FLIGHTSAFETY INTERNATIONAL INC. a subsidiary
named as the applicant on its applications, in US
5 published
FOREST RIVER, INC. a subsidiary
US, as the owner printed on each patent
0 published
MiTek Industries, Inc. a subsidiary
US, as the owner printed on each patent
0 published
Northern Natural Gas Company a subsidiary
US, as the owner printed on each patent
0 published
Pilot Travel Centers, LLC a subsidiary
US, as the owner printed on each patent
0 published
Business Wire, Inc. a subsidiary
US, as the owner printed on each patent
1 published
Jazwares, LLC a subsidiary
US, as the owner printed on each patent
0 published
Mindware Corporation a subsidiary
US, as the owner printed on each patent
2 published
PCC AIRFOILS, INC. a subsidiary
named as the applicant on its applications, in US
4 published
PacifiCorp a subsidiary
US, as the owner printed on each patent
1 published
RICHLINE GROUP, INC. a subsidiary
named as the applicant on its applications, in US
4 published
The Fechheimer Brothers Company a subsidiary
named as the applicant on its applications, in US
4 published
GARAN, INCORPORATED a subsidiary
US, as the owner printed on each patent
1 published
Johns Manville Europe GmbH a subsidiary
DE, as the owner printed on each patent
1 published
Titanium Metals Corporation a subsidiary
named as the applicant on its applications, in US
3 published
Acme Brick Company a subsidiary
US, as the owner printed on each patent
0 published
Alleghany Capital Corporation a subsidiary
named as the applicant on its applications, in US
2 published
BENJAMIN MOORE & CO. a subsidiary
named as the applicant on its applications, in US
2 published
Boat America Corporation a subsidiary
US, as the owner printed on each patent
0 published
Jazwares, LLC a subsidiary
named as the applicant on its applications, in US
2 published
LIPOTEC, S.A.U. a subsidiary
named as the applicant on its applications, in ES
2 published
Lipotec SAU a subsidiary
ES, as the owner printed on each patent
0 published
Marmon Crane Services, Inc. a subsidiary
US, as the owner printed on each patent
2 published
McLane Company, Inc. a subsidiary
US, as the owner printed on each patent
0 published
PCC STRUCTURALS, INC. a subsidiary
named as the applicant on its applications, in US
2 published
SPS TECHNOLOGIES, LLC a subsidiary
named as the applicant on its applications, in US. 1 more under the same name are not counted (printed in GB)
2 published
XTRA Corporation a subsidiary
US, as the owner printed on each patent
0 published
Berkshire Hathaway Energy Company a subsidiary
US, as the owner printed on each patent
0 published
Berkshire Hathaway Energy Company a subsidiary
named as the applicant on its applications, in US
1 published
CMH Manufacturing, Inc. a subsidiary
US, as the owner printed on each patent
1 published
CORT Business Services Corporation a subsidiary
US, as the owner printed on each patent. 1 more under the same name are not counted (printed in FR)
0 published
CORT Business Services Corporation a subsidiary
named as the applicant on its applications, in US
1 published
Duracell, a division of the Gillette Company a subsidiary
US, as the owner printed on each patent
0 published
Homemakers Plaza, Inc. a subsidiary
US, as the owner printed on each patent
0 published
LARSON-JUHL US LLC a subsidiary
US, as the owner printed on each patent
1 published
LeachGarner, Inc. a subsidiary
named as the applicant on its applications, in US
1 published
Marmon Highway Technologies LLC a subsidiary
US, as the owner printed on each patent
0 published
Marmon Highway Technologies LLC a subsidiary
named as the applicant on its applications, in US
1 published
McLane Company, Inc. a subsidiary
named as the applicant on its applications, in US
1 published
WESTGUARD INSURANCE COMPANY a subsidiary
US, as the owner printed on each patent
0 published
Names not counted (7)
Northern Electric plc.
Most of its patents print CA; this name counts in GB. 65 granted and 0 published under it are not counted.
GEICO Corporation
Most of its patents print IT; this name counts in US. 18 granted and 9 published under it are not counted.
GEICO Corporation
Most of its patents print IT; this name counts in US. 0 granted and 17 published under it are not counted.
TTI, Inc.
Most of its patents print KR; this name counts in US. 6 granted and 2 published under it are not counted.
The Duracell Company
No country is printed for it. 0 granted and 5 published under it are not counted.
TTI, Inc.
Most of its patents print KR; this name counts in US. 0 granted and 2 published under it are not counted.
MHC Inc.
Most of its patents print JP; this name counts in US. 0 granted and 1 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| Dec 30, 2025 | 12,509,131 | Train simulator test set and method therefor | Transport | BNSF Railway Company |
| Dec 23, 2025 | D1,106,719 | Product display panel | Marmon Foodservice Technologies, Inc. | |
| Dec 23, 2025 | 12,503,145 | System and method for virtual block operational status control with long block time delay | Transport | BNSF Railway Company |
| Dec 23, 2025 | 12,502,883 | Methods and devices for printing on substrates | Textile and paper machines | Shaw Industries Group, Inc. |
| Dec 23, 2025 | 12,502,809 | Polymer injection system comprising multiple pumps and methods of using same | Other special machines | Shaw Industries Group, Inc. |
| Dec 23, 2025 | 12,502,716 | Cutting insert and turning tool | Machine tools | TUNGALOY CORPORATION |
| Dec 16, 2025 | D1,105,863 | Wedger | Marmon Foodservice Technologies, Inc. | |
| Dec 16, 2025 | 12,497,721 | Automated shearing system and methods of use thereof | Chemical engineering | Shaw Industries Group, Inc. |
| Dec 16, 2025 | 12,497,282 | Drop-in beverage dispenser | Handling | Marmon Foodservice Technologies, Inc. |
| Dec 16, 2025 | 12,495,931 | Latent heat toaster control | Control | Marmon Foodservice Technologies, Inc. |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|---|---|---|---|
| Dec 25, 2025 | 2025/0388168 | LIGHTING ASSEMBLY FOR A RECREATIONAL TRAVEL TRAILER AND SYSTEM THEREOF | Transport | FOREST RIVER, INC. |
| Dec 25, 2025 | 2025/0387839 | CUTTING TOOL | Machine tools | TUNGALOY CORPORATION |
| Dec 18, 2025 | 2025/0382807 | Apparatus for Continuous Assembly of Floor of Manufactured Building | Civil engineering | CMH Manufacturing, Inc. |
| Dec 18, 2025 | 2025/0382169 | NOZZLES AND BEVERAGE MACHINES | Handling | Marmon Foodservice Technologies, Inc. |
| Dec 18, 2025 | 2025/0381603 | COATED CUTTING TOOL | Surface technology, coating | TUNGALOY CORPORATION |
| Dec 11, 2025 | 2025/0375821 | BODY AND CUTTING TOOL | Machine tools | TUNGALOY CORPORATION |
| Dec 11, 2025 | 2025/0375820 | CUTTING INSERT AND CUTTING TOOL | Machine tools | TUNGALOY CORPORATION |
| Dec 11, 2025 | 2025/0375819 | CUTTING INSERT AND CUTTING TOOL | Machine tools | TUNGALOY CORPORATION |
| Dec 4, 2025 | 2025/0372000 | SYSTEM AND METHOD FOR SIMULATING FLUID FLOW | Computer technology | FLIGHTSAFETY INTERNATIONAL INC. |
| Dec 4, 2025 | 2025/0370984 | MEMBRANES WITH WATER-ACTIVATED BINDING ELEMENTS | Computer technology | JOHNS MANVILLE |
What it applied for, 2024 to 2025: Machine tools 82 · Transport 59 · Surface technology, coating 38 · Basic materials chemistry 35 · Macromolecular chemistry, polymers 26 · Electrical machinery, apparatus, energy 23.
A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.