Growing community of inventors

Easton, PA, United States of America

Robert S Volk

Average Co-Inventor Count = 1.96

ph-index = 7

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 = 132

Robert S VolkCharles W Dietterich (2 patents)Robert S VolkDouglas Brand (2 patents)Robert S VolkVito Niosi (2 patents)Robert S VolkNancy A DeBellis (2 patents)Robert S VolkTracy D Kroop (2 patents)Robert S VolkJoseph A Marino (2 patents)Robert S VolkDavid S Smith (1 patent)Robert S VolkRobert S Volk (8 patents)Charles W DietterichCharles W Dietterich (26 patents)Douglas BrandDouglas Brand (18 patents)Vito NiosiVito Niosi (7 patents)Nancy A DeBellisNancy A DeBellis (4 patents)Tracy D KroopTracy D Kroop (2 patents)Joseph A MarinoJoseph A Marino (2 patents)David S SmithDavid S Smith (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Binney & Smith Inc. (8 from 134 patents)

2. Crayola Llc. (131 patents)


8 patents:

1. 6565275 - Marker with eraser

2. 6505984 - Crayon with eraser

3. 5533900 - Stencil holder and kit and method of making an image

4. D360894 - Writing surface and enclosure for supplies

5. D360649 - Writing surface and enclosure for supplies

6. D356822 - Stencil holder

7. D356334 - Writing surfaces and container for supplies

8. 5388689 - Writing surfaces and container for supplies

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as of
12/12/2025
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