Growing community of inventors

Hawthorn Woods, IL, United States of America

Donovan Zielke

Average Co-Inventor Count = 2.40

ph-index = 2

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 = 62

Donovan ZielkeRoger Twibell (2 patents)Donovan ZielkeJohn G Mathews (1 patent)Donovan ZielkeDonovan Zielke (2 patents)Roger TwibellRoger Twibell (2 patents)John G MathewsJohn G Mathews (16 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,880 patents)

2. Clear Golf, LLC (1 from 1 patent)


2 patents:

1. 7959519 - Golf club head with insert having indicia therein

2. 7749105 - Golf club head with insert having indicia therein

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idiyas.com
as of
1/3/2026
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