Growing community of inventors

Moreland Hills, OH, United States of America

John R Spirk

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 = 18

John R Spirk ↔ John Richard Nottingham (1 patent)John R Spirk ↔ Rino Conti (1 patent)John R Spirk ↔ Robert F Bateman (1 patent)John R SpirkJohn R Spirk (1 patent)John Richard NottinghamJohn Richard Nottingham (246 patents)Rino ContiRino Conti (95 patents)Robert F BatemanRobert F Bateman (19 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Dart Industries Inc. (1 from 1,642 patents)


1 patent:

1. D291583 - Stacking toy or the like

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12/21/2025
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