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For the Inventor, By the Inventor

Philadelphia, PA, United States of America

Elf Atochem North America, Inc.

Calculating rank
USPTO Granted Patents = 194


Trademarks = 22

Forward Citations = 1,639

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169 inventors (with patents filed for the assignee):

goldMedal Maher Y Elsheikh (23 out of 71 patents)

silverMedal Jose A Sanchez (19 out of 38 patents)

bronzeMedal Daryl L Stein (16 out of 19 patents)

4.  Richard M Crooker (15 out of 24 patents)

5.  Ronald E MacLeay (13 out of 69 patents)

6.  John Distaso (12 out of 12 patents)

7.  Terry N Myers (10 out of 26 patents)

8.  Wayne Ranbom (9 out of 11 patents)

9.  William D Honnick (9 out of 15 patents)

10.  Emily C Bossert (9 out of 10 patents)

11.  Kevin C Cannon (8 out of 12 patents)

12.  Stanley R Sandler (7 out of 51 patents)

13.  Jeffrey H Yen (6 out of 7 patents)

14.  John A Wismer (5 out of 21 patents)

15.  Michael J Lindstrom (5 out of 16 patents)


Core Competencies:
Organotin Catalysts
Polymerization Processes
Blowing Agents
E-Coat Catalysts
Thermoplastic Polymers
Fluorination Catalysts
Glass Strengthening
Desiccation Composition
Powder Coatings
Lithographic Ink
Nickel-Phosphorus Alloys
Peroxyoxalates

194 patents:

1. 6166235 - Heterogeneous organotin catalysts (2000-12-26),
2. 6162755 - Heterogeneous organotin catalysts (2000-12-19),
3. 6159346 - Inhibition of 141b decomposition (2000-12-11),
4. 615934 - Inhibition of 141b decomposition (2000-12-12),
5. 6156832 - Composition based on organotin maleates which can be used to stabilize (2000-12-05),
6. 6136877 - 142b/124 blowing agent blends (2000-10-24),
7. 6124510 - 1234ze preparation (2000-09-26),
8. 6124380 - Metal containing e-coat catalysts optionally with tin catalysts (2000-09-26),
9. 6120908 - Strengthening flat glass by edge coating (2000-09-19),
10. 6117917 - Blowing agent blends and use thereof (2000-09-12),
11. 6117914 - 142b/124 blowing agent blends (2000-09-12),
12. 6099624 - Nickel-phosphorus alloy coatings (2000-08-08),
13. 6083874 - Composition and method for plant desiccation (2000-07-04),
14. 6083627 - Powder coatings from mixtures of thermoplastic vinylidene fluoride based (2000-07-04),
15. 6074985 - Fluorination catalysts (2000-06-13),
Company Overview
Elf Atochem North America, Inc. is a prominent player in the field of organotin catalysts, specializing in the development and manufacturing of innovative chemical solutions. The company focuses on a range of applications including polymerization processes, blowing agents, and e-coat catalysts, contributing significantly to advancements in thermoplastic polymers and glass strengthening technologies. Based in Philadelphia, PA, Elf Atochem is dedicated to providing high-performance materials that enhance product durability and efficiency across various industries.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

194 Patents

#15 in Philadelphia, PA

#89 in Pennsylvania

#2,128 in US

#4,353 in the World

Philadelphia, PA (US)
Philadelphia, PA, United States of America

Elf Atochem North America, Inc.

Forward Citations = 1,639

169 inventors:

goldMedal Maher Y Elsheikh (23 out of 71 patents)

silverMedal Jose A Sanchez (19 out of 38 patents)

bronzeMedal Daryl L Stein (16 out of 19 patents)

4.  Richard M Crooker (15 out of 24 patents)

5.  Ronald E MacLeay (13 out of 69 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Elf Atochem North America, Inc.. Retrieved from https://idiyas.com/company/elf-atochem-north-america

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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