Growing community of inventors

Lapeer, MI, United States of America

Gregory Butler

Average Co-Inventor Count = 7.00

ph-index = 1

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 = 30

Gregory Butler ↔ Chris P Theodore (1 patent)Gregory Butler ↔ Robert Samuel Simons (1 patent)Gregory Butler ↔ Marc V Musial (1 patent)Gregory Butler ↔ Derk Hartland (1 patent)Gregory Butler ↔ Daniel D Agnew (1 patent)Gregory Butler ↔ William A Frazer (1 patent)Gregory ButlerGregory Butler (1 patent)Chris P TheodoreChris P Theodore (10 patents)Robert Samuel SimonsRobert Samuel Simons (6 patents)Marc V MusialMarc V Musial (3 patents)Derk HartlandDerk Hartland (3 patents)Daniel D AgnewDaniel D Agnew (1 patent)William A FrazerWilliam A Frazer (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mj Acquisitions, Inc. (1 from 2 patents)


1 patent:

1. 8181728 - Automotive vehicle engine apparatus

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as of
1/13/2026
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