Growing community of inventors

Concord, CA, United States of America

John Marion Frazer

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 = 7

John Marion Frazer ↔ Martin Joseph Crnkovich (1 patent)John Marion Frazer ↔ Colin Weaver (1 patent)John Marion Frazer ↔ Michael Emmanuel Kotsos (1 patent)John Marion FrazerJohn Marion Frazer (1 patent)Martin Joseph CrnkovichMartin Joseph Crnkovich (101 patents)Colin WeaverColin Weaver (41 patents)Michael Emmanuel KotsosMichael Emmanuel Kotsos (16 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fresenius Medical Care Holdings, Inc. (1 from 647 patents)


1 patent:

1. 8663463 - Extracorporeal fluid circuit and related components

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as of
1/8/2026
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