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For the Inventor, By the Inventor

Dallas, TX, United States of America

Occidental Chemical Corporation


USPTO Granted Patents = 462

% Expired Patents = 0.65



Trademarks = 22

Forward Citations = 3,158

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330 inventors (with patents filed for the assignee):

goldMedal David Y Tang (30 out of 30 patents)

silverMedal Henry C Lin (26 out of 32 patents)

bronzeMedal Rodney L Klausmeyer (22 out of 30 patents)

4.  John Lee Dawkins (22 out of 24 patents)

5.  Michael J Fifolt (21 out of 23 patents)

6.  Jeffrey S Stults (21 out of 35 patents)

7.  Willis T Schwartz (20 out of 29 patents)

8.  Keith S Kramer (17 out of 25 patents)

9.  Tilak V Bommaraju (17 out of 26 patents)

10.  Darrell Gene Hollis (16 out of 16 patents)

11.  Ramesh Krishnamurti (15 out of 35 patents)

12.  Lawrence B Fertel (14 out of 15 patents)

13.  Sandor M Nagy (14 out of 110 patents)

14.  William S Derwin (14 out of 14 patents)

15.  Mohan Singh Saran (12 out of 16 patents)


Core Competencies:
Chlorinated Hydrocarbons
Photochlorination
Vinyl Polymerization
Chloralkali Process
Halogenated Propanes
Polyvinyl Chloride
Catalysts
Fluorination Reactions
Aromatic Compounds
Benzoyl Halides
Dehalogenation
Medical Articles

462 patents:

1. 12435019 - Process for the production of chlorinated hydrocarbons (2025-10-07),
2. 12180133 - Photochlorination of partially-chlorinated chloromethanes to carbon tetrachloride (2024-12-31),
3. 12054444 - Photochlorination of chloroform to carbon tetrachloride (2024-08-06),
4. 11945761 - Process for the production of chlorinated hydrocarbons (2024-04-02),
5. 11780792 - Photochlorination of partially-chlorinated chloromethanes to carbon tetrachloride (2023-10-10),
6. 11584703 - Photochlorination of chloroform to carbon tetrachloride (2023-02-21),
7. 11565988 - Method for making 1,1,3,3-tetrachloropropene (2023-01-31),
8. 11104627 - Method for making 1,1,3,3-tetrachloropropene (2021-08-31),
9. 10847825 - Chloralkali process (2020-11-24),
10. 10787405 - Photochlorination of chloroform to carbon tetrachloride (2020-09-29),
11. 10787404 - Methods for producing halogenated propanes (2020-09-29),
12. 10787403 - Methods of making chlorinated hydrocarbons (2020-09-29),
13. 10562832 - Method for making 1,1,3,3-tetrachloropropene (2020-02-18),
14. 10526261 - Methods of making chlorinated hydrocarbons (2020-01-07),
15. 10207970 - Methods for recovering chlorinated hydrocarbons (2019-02-19),
Occidental Chemical Corporation, based in Dallas, TX, specializes in the production and development of chlorinated hydrocarbons. The company is recognized for its expertise in various core technologies, including photochlorination, vinyl polymerization, and the chloralkali process. Its product portfolio encompasses halogenated propanes and polyvinyl chloride, along with advanced catalysts and fluorination reactions. Occidental Chemical plays a significant role in the chemical industry, contributing to diverse applications across multiple sectors.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

Occidental Chemical Corporation
462 Patents

#4 in Dallas, TX

#62 in Texas

#1,039 in US

#2,061 in the World

Dallas, TX (US)
Dallas, TX, United States of America

Occidental Chemical Corporation

Forward Citations = 3,158

330 inventors:

goldMedal David Y Tang (30 out of 30 patents)

silverMedal Henry C Lin (26 out of 32 patents)

bronzeMedal Rodney L Klausmeyer (22 out of 30 patents)

4.  John Lee Dawkins (22 out of 24 patents)

5.  Michael J Fifolt (21 out of 23 patents)

Please report any incorrect information to [email protected]
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