Reading, United Kingdom

Castrol Limited


USPTO Granted Patents = 120

% Expired Patents = 24.2



Trademarks = 8

Forward Citations = 875

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149 inventors (with patents filed for the assignee):

goldMedal Steven Paul Goodier (20 out of 20 patents)

silverMedal Irwin L Goldblatt (16 out of 19 patents)

bronzeMedal Richard P Sauer (14 out of 14 patents)

4.  Peter Stuart Brett (12 out of 12 patents)

5.  Oliver Paul Taylor (9 out of 10 patents)

6.  Richard Currie (9 out of 9 patents)

7.  Kevin Richard West (8 out of 10 patents)

8.  Herbert Frank Askew (8 out of 14 patents)

9.  Mark O'Malley (7 out of 7 patents)

10.  Michael E McHenry (7 out of 7 patents)

11.  Colin John Harrington (7 out of 7 patents)

12.  Piers Sebastian Harding (6 out of 9 patents)

13.  Frederick J Boden (6 out of 6 patents)

14.  Sener Karagulle (6 out of 6 patents)

15.  Christopher Dawson (5 out of 5 patents)


Core Competencies:
Lubricant Container
Heat Exchange Fluid
Metalworking Fluid
Fluid Distribution
Friction Modifier
Dispersant Polymer
Grafted Copolymer
Emergency Fuel
Oil Analysis
Non-Aqueous Lubricant
Two-Stroke Motorcycle Lubricant
Mobile Oil Dispenser

120 patents:

Company Overview
Castrol Limited, headquartered in Reading, UK, specializes in the development and manufacture of high-performance lubricant compositions. The company focuses on a range of technological fields, including lubricant containers, heat exchange fluids, and metalworking fluids. Castrol is known for its innovative solutions that enhance fluid distribution and improve performance through advanced additives such as friction modifiers and dispersant polymers. Its commitment to research and development positions Castrol as a leader in the lubricant industry, catering to diverse applications across various sectors.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Castrol Limited USPTO Patent Assignee Logo
120 Patents

#2 in Reading

#142 in United Kingdom

#6,652 in the World

Reading, GB
Reading, United Kingdom
Forward Citations = 875

149 inventors:

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Castrol Limited. Retrieved from https://idiyas.com/company/castrol

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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