Growing community of inventors

Williamsville, NY, United States of America

David Ryvin

Average Co-Inventor Count = 1.00

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 = 66

David RyvinDavid Ryvin (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. American Allsafe Company (1 from 11 patents)


1 patent:

1. 5575009 - Cold weather face mask and hood

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as of
12/19/2025
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