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Polysar Limited

USPTO Granted Patents = 139

CIPO Patents = 2

Trademarks = 3

Forward Citations = 1,462

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110 inventors (with patents filed for the assignee):

Douglas C Edwards (14 out of 14 patents)

Kyosaku Sato (12 out of 13 patents)

Ernest Jack Buckler (8 out of 8 patents)

4. Michael Hugh Richmond (7 out of 7 patents)

5. Eric G Kent (7 out of 7 patents)

6. Ronald J Thompson (5 out of 7 patents)

7. Herbert F Schwarz (5 out of 5 patents)

8. James Lunt (5 out of 5 patents)

9. Erhardt Fischer (5 out of 5 patents)

10. Akhtar Osman (4 out of 17 patents)

11. Evalds Lasis (4 out of 4 patents)

12. Yung-Kang Wei (4 out of 4 patents)

13. Ivan S Lee (4 out of 4 patents)

14. Dilipkumar Padliya (3 out of 5 patents)

15. Stephen C Davis (3 out of 4 patents)

Core Competencies:

Metallocene Catalyst

Toughened Thermoplastics

Butyl Rubber

Polymer Recovery

Nitrile Rubber

Thermoset Resins

Vulcanizable Compositions

Adhesive Polymers

EPDM Elastomers

Polymer Production

Fibre Reinforcement

Chemical Stripping

139 patents: Sort by Forward Citations

1. 5372980 - Bimetallic metallocene alumoxane catalyst system and its use in the (1994-12-13),

2. 5336719 - Transparent toughened plastics (1994-08-09),

3. 5252664 - Transparent toughened thermoplastics (1993-10-12),

4. 5244965 - Polymer solution treatment process (1993-09-14),

5. 5194538 - Preparation of butyl rubber with bimodal molecular weight distribution (1993-03-16),

6. 5194528 - Dimer reduction (1993-03-16),

7. 5079296 - Transparent toughened thermoplastics (1992-01-07),

8. 5051299 - Fibre reinforced belt (1991-09-24),

9. 5045603 - Chlorinated EPDM with superior stability (1991-09-03),

10. 5043392 - Toughened thermoplastics (1991-08-27),

11. 5026794 - Adducts of an hydroxy-free acrylate resin and an epoxy resin (1991-06-25),

12. 5026744 - Synthetic clay (1991-06-25),

13. 4990456 - Analysis of asphalt (1991-02-05),

14. 4985540 - Process for removing rhodium-containing catalyst residue from (1991-01-15),

15. 4983528 - Measurement of unsaturation level in butyl and EPDM rubbers (1991-01-08),

Polysar Limited is a multinational chemical company specializing in the production of synthetic rubber, latex, and other specialty polymers. Headquartered in Canada, the company has a global presence with manufacturing facilities and distribution centers strategically located around the world. With a rich history spanning several decades, Polysar Limited has been a trusted provider of high-quality rubber and polymer products to various industries, including automotive, construction, and consumer goods. Committed to sustainable practices, the company focuses on innovation, research, and development to meet evolving market demands while minimizing environmental impact.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

139 Patents

#1 in Sarnia

#90 in Canada

#5,801 in the World

Polysar Limited

Forward Citations = 1,462

110 inventors:

Douglas C Edwards (14 out of 14 patents)

Kyosaku Sato (12 out of 13 patents)

Ernest Jack Buckler (8 out of 8 patents)

4. Michael Hugh Richmond (7 out of 7 patents)

5. Eric G Kent (7 out of 7 patents)

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