Forward Citations = 185

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3 inventors (with patents filed for the assignee):

Robert E Kesting (5 out of 11 patents)

Joy M Schaefer (2 out of 3 patents)

Narayan Das (2 out of 10 patents)

7 patents: Sort by Forward Citations

1. 4422886 - Surface treatment for aluminum and aluminum alloys (1983-12-27),

2. 4391652 - Surface treatment for aluminum and aluminum alloys (1983-07-05),

3. 4048271 - Dry process for forming polycarbonate membranes (1977-09-13),

4. 4035459 - Process for spinning dry-fiber cellulose acetate hollow fiber membranes (1977-07-12),

5. 4035457 - Nonbiodegradable polymers (1977-07-12),

6. 3957651 - Microporous polyester membranes and polymer assisted phase inversion (1976-05-18),

7. 3945926 - Integral microporous high void volume polycarbonate membranes and a dry (1976-03-23),

Company Overview

Chemical Systems Incorporated (CSI) is a leading provider of chemical process solutions for industries such as manufacturing, pharmaceuticals, and electronics. With over 20 years of experience, CSI offers a range of products and services including custom chemical blends, process optimization, and equipment design. Our team of experts work closely with clients to deliver innovative solutions that improve efficiency and productivity.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

7 Patents

#73 in Santa Ana, CA

#9,508 in California

#39,929 in US

Santa Ana, CA, United States of America

Chemical Systems Incorporated

Forward Citations = 185

3 inventors:

Robert E Kesting (5 out of 11 patents)

Joy M Schaefer (2 out of 3 patents)

Narayan Das (2 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Chemical Systems Incorporated. Retrieved from https://idiyas.com/company/chemical-systems

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]