Growing community of inventors

Santa Ana, CA, United States of America

Harry Dennis Sigel

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 = 20

Harry Dennis Sigel ↔ John Wallace Matthews (1 patent)Harry Dennis Sigel ↔ Peter Hauk (1 patent)Harry Dennis SigelHarry Dennis Sigel (1 patent)John Wallace MatthewsJohn Wallace Matthews (83 patents)Peter HaukPeter Hauk (2 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Newport Research, Inc. (1 from 2 patents)


1 patent:

1. 4050665 - Vibration damping apparatus

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as of
12/11/2025
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