Growing community of inventors

Platteville, WI, United States of America

John K Olthafer

Average Co-Inventor Count = 4.00

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 = 19

John K OlthaferRobert J Harter (1 patent)John K OlthaferJames C Boerger (1 patent)John K OlthaferMark G Petri (1 patent)John K OlthaferJohn K Olthafer (1 patent)Robert J HarterRobert J Harter (26 patents)James C BoergerJames C Boerger (21 patents)Mark G PetriMark G Petri (9 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Rite-hite Holding Corporation (1 from 361 patents)


1 patent:

1. 6574832 - Yieldable guide for a door

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as of
12/17/2025
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