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Cleveland, OH, United States of America

R. O. Hull & Company, Inc.

USPTO Granted Patents = 14

Trademarks = 5

Forward Citations = 278

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14 inventors (with patents filed for the assignee):

William E Eckles (5 out of 17 patents)

William J Willis (4 out of 12 patents)

Valerie M Canaris (3 out of 8 patents)

4. Thomas Walter Starinshak (2 out of 22 patents)

5. Donald J Guhde (1 out of 12 patents)

6. William E Rosenberg (1 out of 13 patents)

7. Karen Huebner (1 out of 1 patent)

8. Thomas J Foley (1 out of 1 patent)

9. James M Frank (1 out of 1 patent)

10. Craig V Bishop (1 out of 3 patents)

11. Richard K Lowery (1 out of 2 patents)

12. Roger A Kelly (1 out of 1 patent)

13. Charles W McFarland (1 out of 2 patents)

14. Howard G Pekar (1 out of 5 patents)

14 patents: Sort by Forward Citations

1. 4171231 - Coating solutions of trivalent chromium for coating zinc surfaces (1979-10-16),

2. 4169772 - Acid zinc plating baths, compositions useful therein, and methods for (1979-10-02),

3. 4165242 - Treatment of metal parts to provide rust-inhibiting coatings by (1979-08-21),

4. 4162947 - Acid zinc plating baths and methods for electrodepositing bright zinc (1979-07-31),

5. 4152176 - Method of preparing titanium-containing phosphate conditioner for metal (1979-05-01),

6. 4146442 - Zinc electroplating baths and process (1979-03-27),

7. 4146441 - Additive compositions, baths, and methods for electrodepositing bright (1979-03-27),

8. 4139425 - Composition, plating bath, and method for electroplating tin and/or lead (1979-02-13),

9. 4135991 - Bath and method for electroplating tin and/or lead (1979-01-23),

10. 4134803 - Nitrogen and sulfur compositions and acid copper plating baths (1979-01-16),

11. 4076600 - Leveling agent for acid zinc electroplating baths and method (1978-02-28),

12. 4075066 - Electroplating zinc, ammonia-free acid zinc plating bath therefor and (1978-02-21),

13. 4038161 - Acid copper plating and additive composition therefor (1977-07-26),

14. 3956123 - Additive for electrodeposition of bright tin and tin-lead alloy (1976-05-11),

R. O. Hull & Company, Inc. is a leading insurance brokerage firm specializing in providing innovative insurance solutions for businesses of all sizes. With over 50 years of experience, we have built a reputation for delivering exceptional service and tailored coverage options to meet the unique needs of our clients. Our team of experienced professionals is dedicated to helping businesses navigate the complex world of insurance and risk management.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

14 Patents

#120 in Cleveland, OH

#891 in Ohio

#21,598 in US

#40,882 in the World

Cleveland, OH, United States of America

R. O. Hull & Company, Inc.

Forward Citations = 278

14 inventors:

William E Eckles (5 out of 17 patents)

William J Willis (4 out of 12 patents)

Valerie M Canaris (3 out of 8 patents)

4. Thomas Walter Starinshak (2 out of 22 patents)

5. Donald J Guhde (1 out of 12 patents)

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