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Portland, OR, United States of America

David W Mathew

Average Co-Inventor Count = 1.00

ph-index = 1

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 = 3

David W MathewDavid W Mathew (5 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Audio Precision, Inc. (5 from 23 patents)


5 patents:

1. D920816 - Audio analyzer

2. D892082 - Audio switcher

3. D884517 - Audio analyzer

4. D884516 - Audio analyzer

5. D884515 - Electric-acoustic testing device

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12/11/2025
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