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Cincinnati, OH, United States of America

The Hilton-davis Chemical Co.

USPTO Granted Patents = 37

Trademarks = 5

Forward Citations = 114

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13 inventors (with patents filed for the assignee):

William M Hung (27 out of 73 patents)

Paul J Schmidt (16 out of 78 patents)

Nathan N Crounse (6 out of 49 patents)

4. Patrick J Jefferies (3 out of 12 patents)

5. Wayne L Cook (2 out of 3 patents)

6. Robert W Rebhahn (2 out of 2 patents)

7. Michael B Gunn (2 out of 2 patents)

8. Jack M Knox (2 out of 2 patents)

9. Angelique M Black (2 out of 3 patents)

10. Raymond E Werner (1 out of 4 patents)

11. James E Kassner (1 out of 3 patents)

12. Edward E Ehlinger (1 out of 2 patents)

13. Robert P Huth (1 out of 2 patents)

37 patents: Sort by Forward Citations

1. 5491262 - Bis{[1-(2-A-2-B)ethenyl]}[2-R.sup.2 -4-X-phenyl-or 1-(2-R.sup.2 (1996-02-13),

2. 4736027 - Indole-phthalide derivatives (1988-04-05),

3. 4732991 - Substituted phthalides (1988-03-22),

4. 4697018 - 9-julolidinyl derivatives and process of preparing them (1987-09-29),

5. 4688059 - Marking systems (1987-08-18),

6. 4675389 - (2-alkoxy-4-sulfonyl-5-alkylphenyl)azo-1-hydroxynaphthalene sulfonic (1987-06-23),

7. 4661605 - 3-(ether and thioether)-3-(indolyl)-phthalides (1987-04-28),

8. 4660060 - Imaging systems containing 3-(indol-3-yl)-3-(4-substituted (1987-04-21),

9. 4652643 - 3-amido-7-disubstituted amino-10-carbonylphenothiazines (1987-03-24),

10. 4639750 - Fluoran compounds and marking systems (1987-01-27),

11. 4632783 - Triphenylmethane dyestuffs (1986-12-30),

12. 4618684 - Substituted indoles (1986-10-21),

13. 4604462 - 4-substituted amido-8-disubstituted aminoimidazophenoxazines (1986-08-05),

14. 4604461 - 5-substituted-9-disubstituted amino-12-substituted (1986-08-05),

15. 4604458 - 3-substituted carbonyloxy-7-disubstituted amino-10-substituted (1986-08-05),

The Hilton-davis Chemical Co. is a leading manufacturer and supplier of high-quality dyes and colorants. With over 90 years of experience, we offer a wide range of products for various industries including textiles, plastics, printing inks, and coatings. Our commitment to research, innovation, and customer satisfaction has made us a trusted name in the chemical industry. Visit our website to explore our product range and learn more about how we can meet your colorant needs.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

37 Patents

#31 in Cincinnati, OH

#369 in Ohio

#8,939 in US

#17,698 in the World

Cincinnati, OH, United States of America

The Hilton-davis Chemical Co.

Forward Citations = 114

13 inventors:

William M Hung (27 out of 73 patents)

Paul J Schmidt (16 out of 78 patents)

Nathan N Crounse (6 out of 49 patents)

4. Patrick J Jefferies (3 out of 12 patents)

5. Wayne L Cook (2 out of 3 patents)

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