Growing community of inventors

Denver, CO, United States of America

Dale E Bertwell

Average Co-Inventor Count = 1.25

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 = 322

Dale E BertwellJoseph P Markham (2 patents)Dale E BertwellDale E Bertwell (5 patents)Joseph P MarkhamJoseph P Markham (51 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. B!g Ventures, LLC (2 from 4 patents)

2. Other (1 from 832,966 patents)


5 patents:

1. 5485807 - Hand-held brush

2. D356685 - Brush with cat design

3. 5358503 - Photo-thermal therapeutic device and method

4. D326562 - Brush for grooming animals

5. D326362 - Brush for grooming animals

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as of
1/19/2026
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