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Bedford Park, IL, United States of America

Donlar Corporation

USPTO Granted Patents = 47

% Expired Patents = 2.1

CIPO Patents = 1

Trademarks = 1

Forward Citations = 663

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20 inventors (with patents filed for the assignee):

Larry P Koskan (21 out of 31 patents)

Robert J Ross (17 out of 23 patents)

Abdul R Meah (16 out of 22 patents)

4. Jacob Mazo (11 out of 38 patents)

5. Kim C Low (10 out of 10 patents)

6. Grigory Ya Mazo (9 out of 9 patents)

7. James F Kneller (7 out of 26 patents)

8. J Larry Sanders (7 out of 7 patents)

9. Daniel A Batzel (6 out of 9 patents)

10. Anne M Atencio (5 out of 5 patents)

11. Lai-Duien Grace Fan (4 out of 8 patents)

12. Barney Vallino (4 out of 4 patents)

13. Joseph C Fan (3 out of 6 patents)

14. Alan M Kinnersley (3 out of 9 patents)

15. David J Strom (2 out of 2 patents)

Core Competencies:

Metal Corrosion

Super-Absorbing Polymers

Polysuccinimide

Aspartic Acid

Cyclic Carbonate

Polyaspartic Acid

Hydroponic Productivity

Plant Growth Nutrients

Seed Treatment

Fertilizer Uptake

Polyorganic Acids

Insecticide Combinations

47 patents: Sort by Forward Citations

1. 6620338 - Composition for inhibition of metal corrosion (2003-09-16),

2. 6447717 - Composition and method for inhibition of metal corrosion (2002-09-10),

3. 6399715 - Solution polymerizing aspartic acid and monomer to form succinimide copolymer (2002-06-04),

4. 6277302 - Inhibition of metal corrosion (2001-08-21),

5. 6197897 - Production of succinimide copolymers in cyclic carbonate solvent (2001-03-06),

6. 6005069 - Production of polysuccinimide and derivatives thereof in a (1999-12-21),

7. 5998492 - Super-absorbing polymeric networks (1999-12-07),

8. 5998491 - Super-absorbing polymeric networks (1999-12-07),

9. 5939522 - Production of polysuccinimide and polyaspartate in thioether solvents (1999-08-17),

10. 5939518 - Polyaspartate (salt) by polymerizing aspartic acid and hydrolyzing (1999-08-17),

11. 5939517 - Production of succinimide copolymers in cyclic carbonate solvent (1999-08-17),

12. 5935909 - Treatment of tree seedlings to enhance survival rate (1999-08-10),

13. 5907057 - Production of D,L-aspartic acid (1999-05-25),

14. 5872285 - Production of D,L-aspartic acid (1999-02-16),

15. 5861356 - Method and composition for enhanced plant productivity comprising (1999-01-19),

Company Overview

Donlar Corporation, headquartered in Bedford Park, IL, specializes in advanced chemical solutions focusing on metal corrosion inhibition and plant productivity enhancement. The company develops innovative materials such as succinimide copolymers and superabsorbing polymeric networks, which are integral to various applications in agriculture and industrial sectors. Their expertise extends to hydroponic plant growth technologies and effective combinations of insecticides and herbicides, contributing to sustainable agricultural practices.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

47 Patents

#1 in Bedford Park, IL

#405 in Illinois

#7,430 in US

#14,803 in the World

Bedford Park, IL, United States of America

Donlar Corporation

Forward Citations = 663

20 inventors:

Larry P Koskan (21 out of 31 patents)

Robert J Ross (17 out of 23 patents)

Abdul R Meah (16 out of 22 patents)

4. Jacob Mazo (11 out of 38 patents)

5. Kim C Low (10 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Donlar Corporation. Retrieved from https://idiyas.com/company/donlar

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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