Growing community of inventors

Beaverton, OR, United States of America

Heinz Erwin Grellmann

Average Co-Inventor Count = 2.62

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 = 20

Heinz Erwin GrellmannRobert Carl Tidrick (4 patents)Heinz Erwin GrellmannMichele Kayla Mae Durham (4 patents)Heinz Erwin GrellmannLeonard A Roland (2 patents)Heinz Erwin GrellmannBrent Rodney Jones (1 patent)Heinz Erwin GrellmannPaul Christopher Lucas (1 patent)Heinz Erwin GrellmannHeinz Erwin Grellmann (7 patents)Robert Carl TidrickRobert Carl Tidrick (13 patents)Michele Kayla Mae DurhamMichele Kayla Mae Durham (4 patents)Leonard A RolandLeonard A Roland (7 patents)Brent Rodney JonesBrent Rodney Jones (296 patents)Paul Christopher LucasPaul Christopher Lucas (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Xerox Corporation (5 from 24,189 patents)

2. Tektronix, Inc. (2 from 2,725 patents)


7 patents:

1. 8224214 - Collapsible packaging system

2. 7959270 - Collapsible packaging system

3. 7758173 - Collapsible packaging system

4. 7682010 - Solid ink stick with coating

5. 7577384 - Collapsible packaging system

6. 4831222 - Integrated pad switch

7. 4695811 - High frequency coaxial switch

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as of
12/7/2025
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