Growing community of inventors

Petaluma, CA, United States of America

Donald Walden

Average Co-Inventor Count = 2.00

ph-index = 2

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

Donald WaldenDavid L Lewis (1 patent)Donald WaldenDavid G Lewis (1 patent)Donald WaldenDonald Walden (2 patents)David L LewisDavid L Lewis (19 patents)David G LewisDavid G Lewis (12 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,966 patents)


2 patents:

1. 5896897 - Filling valve

2. D401671 - Filling valve

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as of
1/16/2026
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