Growing community of inventors

Phoenix, AZ, United States of America

David N Grantham

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 = 1

David N Grantham ↔ Mark A Kolber (1 patent)David N Grantham ↔ John F Fienhage (1 patent)David N GranthamDavid N Grantham (1 patent)Mark A KolberMark A Kolber (4 patents)John F FienhageJohn F Fienhage (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Honeywell International Inc. (1 from 15,605 patents)


1 patent:

1. 6157262 - Phase locked loop frequency source having reduced load pull

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12/20/2025
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