Growing community of inventors

Parkersburg, WV, United States of America

Frank G Czerwinski

Average Co-Inventor Count = 2.82

ph-index = 8

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 = 172

Frank G CzerwinskiKenneth J Spear (8 patents)Frank G CzerwinskiSteven F Brooker (6 patents)Frank G CzerwinskiBryan S Ritchie (1 patent)Frank G CzerwinskiFrank G Czerwinski (8 patents)Kenneth J SpearKenneth J Spear (44 patents)Steven F BrookerSteven F Brooker (27 patents)Bryan S RitchieBryan S Ritchie (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. O. Ames Co. (8 from 44 patents)


8 patents:

1. 5975601 - One-piece hand-held gardening tool

2. D396615 - Pruner

3. D393189 - Design for pruner

4. 5615903 - Utility cart having tool handle holding device

5. D375881 - Hand trowel

6. D375236 - Hand cultivator

7. D375027 - Hand transplanter

8. D374166 - Cassette hose reel

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as of
1/5/2026
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