% Expired Patents = 100.0

Forward Citations = 18

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9 inventors (with patents filed for the assignee):

Ian Fotheringham (3 out of 5 patents)

Nicholas Oswald (2 out of 4 patents)

Ratnesh Lal (1 out of 4 patents)

4. Arjan Quist (1 out of 1 patent)

5. Gregory P Liesen (1 out of 10 patents)

6. Sunil K Srivastava (1 out of 1 patent)

7. Ian Victor James Archer (1 out of 1 patent)

8. Rueben Carr (1 out of 1 patent)

9. Susan Alison Arnold (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 8191403 - Petroleum viscosity measurement and communication system and method (2012-06-05),

2. 8133717 - Stereoinversion of amino acids in a single reactor (2012-03-13),

3. 8076106 - Method to increase the yield and improve purification of products from transaminase reactions (2011-12-13),

4. 7588923 - Method to increase the yield and improve purification of products from transaminase reactions (2009-09-15),

Company Overview

Richmond Chemical Corporation is a leading chemical manufacturer specialized in producing high-quality chemicals for various industries. With state-of-the-art facilities and a team of experienced professionals, we deliver innovative solutions to meet our customers' needs. Our dedication to quality and customer satisfaction sets us apart in the industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#37 in Oak Brook, IL

#2,841 in Illinois

#60,671 in US

Oak Brook, IL, United States of America

Richmond Chemical Corporation

Forward Citations = 18

9 inventors:

Ian Fotheringham (3 out of 5 patents)

Nicholas Oswald (2 out of 4 patents)

Ratnesh Lal (1 out of 4 patents)

4. Arjan Quist (1 out of 1 patent)

5. Gregory P Liesen (1 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Richmond Chemical Corporation. Retrieved from https://idiyas.com/company/richmond-chemical

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]