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NewMarket Corporation (NEU)

NYSE: NEU · Industrial Organic Chemicals · Richmond, VA · filing with the SEC since 2004
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Grade7.3
◀ Past 7.6● Present 8.0▶ Future 6.0
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Patents

US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026

1,751 patents granted to the 6 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 NewMarket Corporation’s names, not what it holds today.

Patents granted
1,751
1,725 utility, 18 design, 8 reissue, 1976 to Dec 31, 2025
Granted in 2025
16
Against 26 in 2024 and 21 in 2023
Applications published
269
10 of them in 2025
Names they are printed under
6
a subsidiary
By yearGrantedApplications published
'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
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
Basic materials chemistry86
Macromolecular chemistry, polymers1
Measurement1
Environmental technology1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name6 counted
Ethyl Corporation a subsidiary
US, as the owner printed on each patent
1,368 granted
7 published
Afton Chemical Corporation a subsidiary
US, as the owner printed on each patent
335 granted
154 published
Afton Chemical Corporation a subsidiary
named as the applicant on its applications, in US
0 granted
108 published
Edwin Cooper, Inc. a subsidiary
US, as the owner printed on each patent. 8 more under the same name are not counted (printed in GB)
31 granted
0 published
Afton Chemical Intangibles LLC a subsidiary
US, as the owner printed on each patent
16 granted
0 published
Afton Chemical Japan Corp. a subsidiary
JP, as the owner printed on each patent
1 granted
0 published
Names not counted (2)
American Pacific Corporation
Only generic words.
American Pacific Corporation
Only generic words.
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Nov 25, 202512,480,066Antiwear systems for improved wear in medium and/or heavy duty diesel enginesBasic materials chemistryAfton Chemical Corporation
Nov 4, 202512,460,150Low-ash lubricating compositionsBasic materials chemistryAfton Chemical Corporation
Oct 28, 202512,454,656Additives with high sulfurization for lubricating oil compositionsBasic materials chemistryAfton Chemical Corporation
Oct 28, 202512,454,653Gasoline additive composition for improved engine performanceBasic materials chemistryAfton Chemical Corporation
Oct 21, 202512,448,582Methods of improving the performance of combustion engine after-treatment devicesBasic materials chemistryAfton Chemical Corporation
Sep 23, 202512,421,471Low viscosity lubricating fluid for an electric motor systemBasic materials chemistryAfton Chemical Corporation
Aug 5, 202512,378,494Corrosion inhibitor and industrial lubricant including the sameBasic materials chemistryAfton Chemical Corporation
Aug 5, 202512,378,493Lubricating composition for enhanced fuel economyBasic materials chemistryAfton Chemical Corporation
May 27, 202512,312,555Lubricating composition for durability and enhanced fuel economyBasic materials chemistryAfton Chemical Corporation
May 20, 202512,305,142Industrial lubricantBasic materials chemistryAfton Chemical Corporation
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Dec 11, 20252025/0376632PARTICULATE REDUCTION IN GDI ENGINES USING MANNICH DETERGENTSBasic materials chemistryAfton Chemical Corporation
Oct 2, 20252025/0304871MULTI-FUNCTIONAL FUEL ADDITIVE TO PROVIDE FRICTION REDUCTION AND CORROSION PROTECTIONBasic materials chemistryAfton Chemical Corporation
Jul 24, 20252025/0236807ADDITIVES WITH HIGH SULFURIZATION FOR LUBRICATING OIL COMPOSITIONSBasic materials chemistryAfton Chemical Corporation · patent 12,454,656 granted from it
Jul 17, 20252025/0230375MAGNESIUM SULFONATE DETERGENT HAVING IMPROVED COMPATIBILITY WITH FRICTION MODIFIERSBasic materials chemistryAfton Chemical Corporation
Jun 19, 20252025/0197756THIOPHOSPHATE ESTERS AS ANTIWEAR ADDITIVES FOR LUBRICANTSBasic materials chemistryAfton Chemical Corporation
Jun 12, 20252025/0188377GASOLINE ADDITIVE COMPOSITION FOR IMPROVED ENGINE PERFORMANCEBasic materials chemistryAfton Chemical Corporation · patent 12,454,653 granted from it
Mar 6, 20252025/0075144DETERGENT AND DISPERSANT SYSTEMS FOR IMPROVED STEEL PISTON CLEANLINESS IN HEAVY DUTY LUBRICANTSBasic materials chemistryAfton Chemical Corporation
Jan 30, 20252025/0034471GASOLINE ADDITIVE COMPOSITION FOR IMPROVED ENGINE PERFORMANCEBasic materials chemistryAfton Chemical Corporation
Jan 2, 20252025/0002806LOW VISCOSITY LUBRICATING FLUID FOR AN ELECTRIC MOTOR SYSTEMBasic materials chemistryAfton Chemical Corporation · patent 12,421,471 granted from it
Jan 2, 20252025/0002805LUBRICANT ADDITIVES FOR PERFORMANCE BOOSTINGBasic materials chemistryAfton Chemical Corporation
What it applied for, 2024 to 2025: Basic materials chemistry 31.

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.

SI Assistanton NEU · research, not advice