Growing community of inventors

Wilmington, DE, United States of America

John N Birmingham, Jr

Average Co-Inventor Count = 6.00

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 = 22

John N Birmingham, Jr ↔ Peter Dwight Spohn (1 patent)John N Birmingham, Jr ↔ Dwight A Holtzen (1 patent)John N Birmingham, Jr ↔ Robert Sterrett Jenkins (1 patent)John N Birmingham, Jr ↔ James Thomas Walnock (1 patent)John N Birmingham, Jr ↔ James Francis Hunt (1 patent)John N Birmingham, JrJohn N Birmingham, Jr (1 patent)Peter Dwight SpohnPeter Dwight Spohn (19 patents)Dwight A HoltzenDwight A Holtzen (7 patents)Robert Sterrett JenkinsRobert Sterrett Jenkins (2 patents)James Thomas WalnockJames Thomas Walnock (2 patents)James Francis HuntJames Francis Hunt (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. E.i. Dupont De Nemours and Company (1 from 16,338 patents)


1 patent:

1. 5560845 - Laser marking of fluoropolymer composition

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1/9/2026
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