Growing community of inventors

Silver Lake, OH, United States of America

Donald A Levengood

Average Co-Inventor Count = 4.00

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 = 22

Donald A Levengood ↔ Oliver L Danko (1 patent)Donald A Levengood ↔ William C Steiss (1 patent)Donald A Levengood ↔ Carl R Bork, Jr (1 patent)Donald A LevengoodDonald A Levengood (1 patent)Oliver L DankoOliver L Danko (8 patents)William C SteissWilliam C Steiss (7 patents)Carl R Bork, JrCarl R Bork, Jr (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Nupro Company (1 from 34 patents)


1 patent:

1. 4634099 - High pressure inverted bellows valve

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12/16/2025
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