Growing community of inventors

Leamington Spa, United Kingdom

Frederick A Butler

Average Co-Inventor Count = 2.57

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 = 25

Frederick A ButlerFrank T Sargent (2 patents)Frederick A ButlerJohn M Antos (1 patent)Frederick A ButlerArthur W Henke (1 patent)Frederick A ButlerErin J Lindsay (1 patent)Frederick A ButlerJames T Embach (1 patent)Frederick A ButlerWilliam Croonenberg (1 patent)Frederick A ButlerFrederick A Butler (3 patents)Frank T SargentFrank T Sargent (23 patents)John M AntosJohn M Antos (45 patents)Arthur W HenkeArthur W Henke (12 patents)Erin J LindsayErin J Lindsay (5 patents)James T EmbachJames T Embach (4 patents)William CroonenbergWilliam Croonenberg (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Thetford Corporation (3 from 123 patents)


3 patents:

1. D255828 - Toilet

2. 4192027 - Toilet

3. 4185337 - Portable toilet with improved flush apparatus

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as of
1/22/2026
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