Enron Corp.

Calculating rank

USPTO Granted Patents = 9

Trademarks = 1

Forward Citations = 143

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8 inventors (with patents filed for the assignee):

David C Hitchcock (4 out of 6 patents)

Bohdan Lisowyj (4 out of 6 patents)

Henry Epstein (4 out of 4 patents)

4. Ronald D Grose (2 out of 9 patents)

5. Paul F Semien (1 out of 1 patent)

6. Merlin H Moseman (1 out of 5 patents)

7. Richard D Cunningham (1 out of 2 patents)

8. Leo F Nichols (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 5934138 - Tool and method for bending angle stock (1999-08-10),

2. 4769897 - Method for forming a press-fitted pipe joint (1988-09-13),

3. 4757772 - Sand collection system (1988-07-19),

4. 4757770 - Condensate sand collection system (1988-07-19),

5. 4678647 - Process for the recovery of gallium and germanium from coal fly ash (1987-07-07),

6. 4653321 - Method of automatically measuring fluid flow rates (1987-03-31),

7. 4643110 - Direct fuel-fired furnace arrangement for the recovery of gallium and (1987-02-17),

8. 4638286 - Reactive gas sensor (1987-01-20),

9. 4637219 - Peak shaving system for air conditioning (1987-01-20),

Company Overview

Enron Corp. was an American energy, commodities, and services company based in Houston, Texas. It was founded in 1985 and grew to be one of the largest natural gas and electricity marketers in the United States. However, the company famously collapsed in 2001 due to accounting fraud and corruption, resulting in one of the biggest corporate scandals in history.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

9 Patents

#515 in Houston, TX

#2,060 in Texas

#32,627 in US

Houston, TX, United States of America

Enron Corp.

Forward Citations = 143

8 inventors:

David C Hitchcock (4 out of 6 patents)

Bohdan Lisowyj (4 out of 6 patents)

Henry Epstein (4 out of 4 patents)

4. Ronald D Grose (2 out of 9 patents)

5. Paul F Semien (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Enron Corp.. Retrieved from https://idiyas.com/company/enron

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]