Growing community of inventors

Niagara Falls, NY, United States of America

Richard A Zirnheld

Average Co-Inventor Count = 3.33

ph-index = 3

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 = 27

Richard A ZirnheldJeffrey W Reynolds (3 patents)Richard A ZirnheldWilliam R Howell (2 patents)Richard A ZirnheldJohn Francis Rhein (2 patents)Richard A ZirnheldGerald P Sitarski (2 patents)Richard A ZirnheldRichard A Zirnheld (3 patents)Jeffrey W ReynoldsJeffrey W Reynolds (6 patents)William R HowellWilliam R Howell (27 patents)John Francis RheinJohn Francis Rhein (21 patents)Gerald P SitarskiGerald P Sitarski (15 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mattel, Inc. (3 from 1,702 patents)


3 patents:

1. 8164429 - Operational-state responsive audiovisual systems

2. 7938218 - Children's ride-on vehicles having ground detection systems

3. 7591335 - Children's ride-on vehicles having ground detection systems

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as of
12/13/2025
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