For the Inventor, By the Inventor

Enter assignee name

Northfield, IL, United States of America

Stepan Chemical Company

USPTO Granted Patents = 16

Trademarks = 11

Forward Citations = 242

Loading Chart...

Loading Chart...

18 inventors (with patents filed for the assignee):

Marvin L Nussbaum (4 out of 4 patents)

Edward A Knaggs (4 out of 4 patents)

Thomas G Baker (2 out of 4 patents)

4. Andrew Shultz (2 out of 2 patents)

5. Julius H Deutsch (2 out of 2 patents)

6. Joseph R Wechsler (2 out of 3 patents)

7. Henry Watanabe (2 out of 2 patents)

8. George Magnus (1 out of 11 patents)

9. Joseph E Lohr, Jr (1 out of 2 patents)

10. Walter Beck (1 out of 1 patent)

11. David Y Kim (1 out of 1 patent)

12. Raymond J Shute (1 out of 1 patent)

13. John C Blackwood (1 out of 1 patent)

14. F Quinn Stepan (1 out of 1 patent)

15. George T Battaglini (1 out of 2 patents)

16 patents: Sort by Forward Citations

1. 4521611 - Polyester polyol blend from phthalic anhydride bottoms (1985-06-04),

2. 4452731 - Cleaner for ovens and the like using sodium alpha olefin sulfonate and (1984-06-05),

3. 4451393 - Cleaner for ovens and the like using sodium alpha olefin sulfonate, (1984-05-29),

4. 4390474 - Sulfonation petroleum composition (1983-06-28),

5. 4370272 - Alkoxylated quaternary ammonium surfactants (1983-01-25),

6. 4347742 - Evaluating sprayability (1982-09-07),

7. 4269730 - Substituted imidazoline reactions with chloroacetate salts (1981-05-26),

8. 4252192 - Process for enhanced oil recovery employing petroleum sulfonates (1981-02-24),

9. 4246387 - Emulsion polymerization with sulfonated alkoxylated alkyl arylol maleates (1981-01-20),

10. 4224455 - Sulfonated alkoxylated alkyl arylol maleate reactive surfactants (1980-09-23),

11. 4177207 - Petroleum sulfonates (1979-12-04),

12. 4148821 - Process for sulfonation (1979-04-10),

13. 4111853 - Particulate composition of sodium alpha olefin sulfonate and sodium (1978-09-05),

14. 4052431 - Process for the production of commercial alpha olefin sulfonates (1977-10-04),

15. 4018333 - Metal fastener sticks and process of preparing same by curing polymeric (1977-04-19),

Stepan Company is a leading global manufacturer of specialty and intermediate chemicals. With a focus on innovation and sustainability, Stepan serves a wide range of industries, including personal care, cleaning, oilfield, and agriculture. The company is committed to creating products that improve the quality of life while minimizing environmental impact.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

16 Patents

#7 in Northfield, IL

#973 in Illinois

#19,271 in US

#36,634 in the World

Northfield, IL, United States of America

Stepan Chemical Company

Forward Citations = 242

18 inventors:

Marvin L Nussbaum (4 out of 4 patents)

Edward A Knaggs (4 out of 4 patents)

Thomas G Baker (2 out of 4 patents)

4. Andrew Shultz (2 out of 2 patents)

5. Julius H Deutsch (2 out of 2 patents)

Please report any incorrect information to support@idiyas.com

Loading…