Growing community of inventors

Sherwood, OR, United States of America

Stephen H Vollum

Average Co-Inventor Count = 8.00

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 = 51

Stephen H Vollum ↔ Thomas W Crosley (1 patent)Stephen H Vollum ↔ Leonard L Hofheins (1 patent)Stephen H Vollum ↔ James R Goldberg (1 patent)Stephen H Vollum ↔ Ronald D Lichty (1 patent)Stephen H Vollum ↔ Victor H Yee (1 patent)Stephen H Vollum ↔ Charles A Vollum (1 patent)Stephen H Vollum ↔ Wayne Davison (1 patent)Stephen H VollumStephen H Vollum (1 patent)Thomas W CrosleyThomas W Crosley (25 patents)Leonard L HofheinsLeonard L Hofheins (20 patents)James R GoldbergJames R Goldberg (8 patents)Ronald D LichtyRonald D Lichty (3 patents)Victor H YeeVictor H Yee (2 patents)Charles A VollumCharles A Vollum (1 patent)Wayne DavisonWayne Davison (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Schlage Lock Company LLC (1 from 877 patents)


1 patent:

1. 4837822 - Cryptographic based electronic lock system and method of operation

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12/20/2025
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