Growing community of inventors

Grand Rapids, MI, United States of America

Thomas R Demmon

Average Co-Inventor Count = 3.43

ph-index = 2

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 = 79

Thomas R DemmonLarry DeKraker (2 patents)Thomas R DemmonJames P Steffens (2 patents)Thomas R DemmonDavid S Teppo (1 patent)Thomas R DemmonThomas R Demmon (2 patents)Larry DeKrakerLarry DeKraker (35 patents)James P SteffensJames P Steffens (11 patents)David S TeppoDavid S Teppo (32 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Steelcase Inc. (2 from 1,812 patents)


2 patents:

1. 5056863 - Laterally adjustable armrest for a chair

2. 4951995 - Arm height adjustment mechanism for a chair

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as of
1/21/2026
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