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Philadelphia, PA, United States of America

Pennwalt Corporation

USPTO Granted Patents = 615

Trademarks = 47

Forward Citations = 7,689

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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 34 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:

Passive Infrared Detector

Flame Retardants

Polymer Stabilizers

Microencapsulated Fungicide

Vibration Sensing Apparatus

Controlled Release Pharmaceuticals

Electrostatic Image Display

Organosulfides

Thiols and Disulfides

Hindered Amine Light Stabilizers

Plant Growth Regulators

Alkaline Cleaners

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 - Dec 9 2025

615 Patents

#5 in Philadelphia, PA

#29 in Pennsylvania

#777 in US

#1,552 in the World

Philadelphia, PA, United States of America

Pennwalt Corporation

Forward Citations = 7,689

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)

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