Growing community of inventors

Houston, TX, United States of America

Warren S Letzsch

Average Co-Inventor Count = 2.00

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 38

Warren S LetzschGerald Earl (3 patents)Warren S LetzschWarren S Letzsch (3 patents)Gerald EarlGerald Earl (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Stone & Webster Engineering Corp. (3 from 122 patents)


3 patents:

1. 5766558 - Fluid catalytic cracking process and apparatus

2. 5723040 - Fluid catalytic cracking process and apparatus

3. 5662868 - Short residence time cracking apparatus and process

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idiyas.com
as of
12/15/2025
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