Growing community of inventors

Cary, NC, United States of America

John C Purvis

Average Co-Inventor Count = 5.00

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 = 11

John C PurvisRandy Quaintance (1 patent)John C PurvisDavid Barrett, Jr (1 patent)John C PurvisDerek Zimmerman (1 patent)John C PurvisDavid Jacobson (1 patent)John C PurvisJohn C Purvis (1 patent)Randy QuaintanceRandy Quaintance (6 patents)David Barrett, JrDavid Barrett, Jr (3 patents)Derek ZimmermanDerek Zimmerman (3 patents)David JacobsonDavid Jacobson (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ply Gem Industries, Inc. (1 from 32 patents)


1 patent:

1. 8839593 - Pre-cast blocks for use in column construction

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as of
1/15/2026
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