Growing community of inventors

Guelph, Canada

John L Perrins

Average Co-Inventor Count = 3.00

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 = 8

John L PerrinsRonald C Aufderheide (1 patent)John L PerrinsDavid M Gilson (1 patent)John L PerrinsJohn L Perrins (1 patent)Ronald C AufderheideRonald C Aufderheide (11 patents)David M GilsonDavid M Gilson (2 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Ashland, Inc. (1 from 240 patents)


1 patent:

1. 5915450 - Riser sleeves for custom sizing and firm gripping

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12/18/2025
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