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Madison Heights, MI, United States of America

Parker Chemical Company

USPTO Granted Patents = 25

Forward Citations = 294

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34 inventors (with patents filed for the assignee):

Andreas Lindert (5 out of 19 patents)

Peter F King (4 out of 10 patents)

Kenneth J Hacias (2 out of 12 patents)

4. Donald P Murphy (2 out of 3 patents)

5. John Huff (2 out of 6 patents)

6. Ronald W Zurilla (2 out of 4 patents)

7. Tsuneo Saito (1 out of 4 patents)

8. Ryuji Kojima (1 out of 3 patents)

9. Thomas J Prescott (1 out of 10 patents)

10. George L Higgins (1 out of 5 patents)

11. Gary D Kent (1 out of 2 patents)

12. Dieter Hauffe (1 out of 11 patents)

13. Sakae Sonoda (1 out of 5 patents)

14. Samuel T Farina (1 out of 2 patents)

15. Karl A Korinek (1 out of 3 patents)

25 patents: Sort by Forward Citations

1. 4812175 - Passivation process and copmposition for zinc-aluminum alloys (1989-03-14),

2. 4726848 - Chlorinated hydrocarbon protective and/or decorative coating stripping (1988-02-23),

3. 4722753 - Alkaline resistant phosphate conversion coatings (1988-02-02),

4. 4713121 - Alkaline resistant phosphate conversion coatings (1987-12-15),

5. 4647316 - Metal base coating composition comprising chromium, silica and phosphate (1987-03-03),

6. 4617068 - Composition and process for treatment of ferrous substrates (1986-10-14),

7. 4612060 - Process for controlling zinc phosphate treating solutions (1986-09-16),

8. 4599116 - Alkaline cleaning process (1986-07-08),

9. 4597888 - Cleaner for steel cans (1986-07-01),

10. 4597806 - Process for maintaining the zinc content in zinc phosphate baths (1986-07-01),

11. 4595424 - Method of forming phosphate coating on zinc (1986-06-17),

12. 4559087 - Process for phosphating metals (1985-12-17),

13. 4539051 - Process for producing phosphate coatings (1985-09-03),

14. 4533639 - Test method for phosphate coatings (1985-08-06),

15. 4532309 - Water-based epoxy resins stable to hydrolysis (1985-07-30),

Parker Chemical Company is a leading provider of chemical solutions for various industries. With our extensive experience and advanced technologies, we offer a wide range of high-quality chemicals, including additives, catalysts, solvents, and more. Our commitment to innovation and customer satisfaction has made us a trusted partner for businesses worldwide. Visit our website to learn more about our products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

25 Patents

#4 in Madison Heights, MI

#471 in Michigan

#12,933 in US

#24,950 in the World

Madison Heights, MI, United States of America

Parker Chemical Company

Forward Citations = 294

34 inventors:

Andreas Lindert (5 out of 19 patents)

Peter F King (4 out of 10 patents)

Kenneth J Hacias (2 out of 12 patents)

4. Donald P Murphy (2 out of 3 patents)

5. John Huff (2 out of 6 patents)

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