Growing community of inventors

North Madison, OH, United States of America

William E Portz

Average Co-Inventor Count = 1.50

ph-index = 5

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 = 69

William E PortzRobert A Germain (1 patent)William E PortzJohn T Kanne (1 patent)William E PortzNeal J Ipema (1 patent)William E PortzEugene W Fileger (1 patent)William E PortzWilliam E Portz (6 patents)Robert A GermainRobert A Germain (10 patents)John T KanneJohn T Kanne (4 patents)Neal J IpemaNeal J Ipema (2 patents)Eugene W FilegerEugene W Fileger (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. True Temper Corporation (5 from 34 patents)

2. Emhart Industries, Inc. (1 from 595 patents)


6 patents:

1. 4848073 - Lawn rake

2. 4573311 - Lawn rake

3. 4093031 - Pendulum type hoe

4. 4005862 - Game racket string suspension

5. 3981502 - Yoke for game racket

6. 3948519 - Handgrip for game racket

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as of
1/13/2026
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