Growing community of inventors

Forest Lake, MN, United States of America

Roger E Wiersma

Average Co-Inventor Count = 5.00

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 = 74

Roger E WiersmaRichard D Anderson (1 patent)Roger E WiersmaMark C Richter (1 patent)Roger E WiersmaMark E Ulrich (1 patent)Roger E WiersmaStanley G Karwoski (1 patent)Roger E WiersmaRoger E Wiersma (1 patent)Richard D AndersonRichard D Anderson (32 patents)Mark C RichterMark C Richter (17 patents)Mark E UlrichMark E Ulrich (15 patents)Stanley G KarwoskiStanley G Karwoski (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Graco Minnesota Inc. (1 from 661 patents)


1 patent:

1. D457599 - Electrostatic spray gun

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12/28/2025
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