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Philadelphia, PA, United States of America

Pennwalt Corporation

USPTO Granted Patents = 615

Trademarks = 36

Forward Citations = 7,775

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368 inventors (with patents filed for the assignee):

Ronald E MacLeay (43 out of 69 patents)

Vassil S Georgiev (35 out of 41 patents)

Stanley R Sandler (34 out of 51 patents)

4. Chester Stephen Sheppard (31 out of 31 patents)

5. George B Mullen (31 out of 33 patents)

6. Sameeh S Toukan (16 out of 18 patents)

7. Orville L Mageli (16 out of 16 patents)

8. Joseph M Bohen (15 out of 26 patents)

9. Ronald C Griffith (15 out of 45 patents)

10. Walter Kulischenko (14 out of 14 patents)

11. James P King (13 out of 29 patents)

12. Jose A Sanchez (12 out of 38 patents)

13. Ivan Christoff Popoff (12 out of 12 patents)

14. Peter F Radice (11 out of 15 patents)

15. Paul Gordon Haines (11 out of 11 patents)

Core Competencies:

Flame Retardants

Light Stabilizers

Lubricant Additives

Polymer Compositions

Organosulfides

Electrostatic Displays

Photochemical Preparation

Piezoelectric Films

Controlled Release

Alkaline Cleaners

Residual Analyzers

Antihistamines

615 patents: Sort by Forward Citations

1. 5107120 - Passive infrared detector (1992-04-21),

2. 4963607 - Compositions and methods using organosulfides for stabilization of (1990-10-16),

3. 4956494 - Oxidation of thiols, disulfides and thiolsulfonates (1990-09-11),

4. 4954811 - Penetration sensor (1990-09-04),

5. 4954542 - Tetrahalophthalate esters as flame retardants for polybutylene (1990-09-04),

6. 4950364 - Process for the separation of 1,1-dichloro-1-fluoroethane and (1990-08-21),

7. 4944853 - Photochemical preparation of 3-(organothio) aldehydes (1990-07-31),

8. 4938945 - High purity anhydrous FeF.sub.3 and process for its manufacture (1990-07-03),

9. 4938894 - Tetrahalophthalate esters as flame retardants for ABS (1990-07-03),

10. 4937385 - Process for the manufacture of dialkyl disulfides and polysulfides (1990-06-26),

11. 4931019 - Electrostatic image display apparatus (1990-06-05),

12. 4927891 - Polymer bound light stabilizer coating resins (1990-05-22),

13. 4927873 - Halophenyl ester flame retardants for polyphenylene ether resins (1990-05-22),

14. 4926650 - Refrigerant fluid and method of use (1990-05-22),

15. 4925903 - Process of making a polymer containing hindered amine light stabilizing (1990-05-15),

Pennwalt Corporation is a multinational company that specializes in manufacturing and supplying various industrial equipment. With over 50 years of experience, Pennwalt has established itself as a trusted provider of innovative solutions for various industries, including chemical, pharmaceutical, and food processing. Offering a wide range of products such as centrifuges, mixers, and filters, Pennwalt is committed to delivering high-quality equipment that meets the specific needs and demands of its customers.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

615 Patents

#6 in Philadelphia, PA

#33 in Pennsylvania

#807 in US

#1,592 in the World

Philadelphia, PA, United States of America

Pennwalt Corporation

Forward Citations = 7,775

368 inventors:

Ronald E MacLeay (43 out of 69 patents)

Vassil S Georgiev (35 out of 41 patents)

Stanley R Sandler (34 out of 51 patents)

4. Chester Stephen Sheppard (31 out of 31 patents)

5. George B Mullen (31 out of 33 patents)

Please report any incorrect information to [email protected]

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