Enpro Inc. (NPO)
NYSE: NPO · Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose · Charlotte, NC · filing with the SEC since 2002
Grade4.5
◀ Past 3.0● Present 4.8▶ Future 5.7
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026129 patents granted to the 18 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 Enpro Inc.’s names, not what it holds today.
Patents granted
129
111 utility, 18 design, 1976 to Dec 31, 2025
Granted in 2025
6
Against 6 in 2024 and 13 in 2023
Applications published
101
7 of them in 2025
Names they are printed under
18
a subsidiary, its own name
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
Mechanical elements23
Surface technology, coating4
Transport4
Electrical machinery, apparatus, energy2
Other special machines1
Materials, metallurgy1
Semiconductors1
Measurement1
IT methods for management1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name18 counted
GARLOCK SEALING TECHNOLOGIES LLC a subsidiary
US, as the owner printed on each patent
23 published
Stemco Products, Inc. a subsidiary
US, as the owner printed on each patent
0 published
TECHNETICS GROUP LLC a subsidiary
US, as the owner printed on each patent
2 published
STEMCO PRODUCTS, INC. a subsidiary
named as the applicant on its applications, in US
27 published
Garlock Sealing Technologies, LLC a subsidiary
named as the applicant on its applications, in US
17 published
TECHNETICS GROUP FRANCE SAS a subsidiary
FR, as the owner printed on each patent
7 published
Technetics Group LLC a subsidiary
named as the applicant on its applications, in US
9 published
ENPRO, INC. its own name
named as the applicant on its applications, in US
6 published
ADVANCED MICRO INSTRUMENTS, INC. a subsidiary
US, as the owner printed on each patent
0 published
Alluxa, Inc. a subsidiary
US, as the owner printed on each patent
0 published
Garlock Hygienic Technologies, LLC a subsidiary
named as the applicant on its applications, in US
3 published
TECHNETICS GROUP FRANCE SAS a subsidiary
named as the applicant on its applications, in FR
3 published
Alluxa, Inc. a subsidiary
named as the applicant on its applications, in US
2 published
GARLOCK HYGIENIC TECHNOLOGIES, LLC a subsidiary
US, as the owner printed on each patent
0 published
AlpHa Measurement Solutions, LLC a subsidiary
named as the applicant on its applications, in US
1 published
Enpro, Inc its own name
US, as the owner printed on each patent
0 published
NxEdge, Inc. a subsidiary
US, as the owner printed on each patent
0 published
NxEdge, Inc. a subsidiary
named as the applicant on its applications, in US
1 published
Names not counted (3)
Garlock Pty Limited
Most of its patents print US; this name counts in AU, DE. 93 granted and 0 published under it are not counted.
Garlock Sealing Technologies LLC
No country is printed for it. 0 granted and 2 published under it are not counted.
PSI Products GmbH
Most of its patents print US; this name counts in DE. 1 granted and 0 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| Dec 9, 2025 | 12,493,833 | System and methods for improved healthy truck stop | IT methods for management | Enpro, Inc |
| Aug 19, 2025 | 12,392,413 | 3D seal assembly | Mechanical elements | GARLOCK SEALING TECHNOLOGIES LLC |
| Jul 15, 2025 | 12,359,306 | Deposition processing systems having active temperature control and associated methods | Surface technology, coating | TECHNETICS GROUP LLC |
| May 20, 2025 | 12,305,756 | Flexible seal assembly | Mechanical elements | TECHNETICS GROUP LLC |
| Apr 22, 2025 | 12,281,731 | Pipe clamp | Mechanical elements | GARLOCK HYGIENIC TECHNOLOGIES, LLC |
| Jan 14, 2025 | 12,196,318 | Metal O-ring seal | Mechanical elements | TECHNETICS GROUP LLC |
| Oct 1, 2024 | 12,104,701 | Resilient metal seal for check valve | Mechanical elements | TECHNETICS GROUP LLC |
| Apr 9, 2024 | 11,953,095 | Flexible seal assembly | Mechanical elements | TECHNETICS GROUP LLC |
| Mar 19, 2024 | 11,933,403 | Metallic sealing assembly for sealing between a rotating shaft and a fixed frame | Mechanical elements | TECHNETICS GROUP FRANCE SAS |
| Mar 19, 2024 | 11,932,932 | Sputtering system with a plurality of cathode assemblies | Electrical machinery, apparatus, energy | Alluxa, Inc. |
Newest applications publishedan application is a clue, never a plan
What it applied for, 2024 to 2025: Mechanical elements 4 · Electrical machinery, apparatus, energy 1 · Handling 1 · Optics 1 · Machine tools 1 · Medical technology 1.
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.