Growing community of inventors

Oklahoma City, OK, United States of America

Roy C Rowland

Average Co-Inventor Count = 2.00

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 = 134

Roy C RowlandGwen V Janssen (3 patents)Roy C RowlandRoy C Rowland (3 patents)Gwen V JanssenGwen V Janssen (4 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (3 from 832,812 patents)


3 patents:

1. 4918757 - Hearing aid headband support

2. 4881616 - Hearing aid retention apparatus

3. 4702345 - Hearing aid retention device

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as of
12/21/2025
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