Growing community of inventors

Campbell, CA, United States of America

Donald T Campbell

Average Co-Inventor Count = 5.00

ph-index = 4

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 = 213

Donald T CampbellMatthew K Schwiebert (4 patents)Donald T CampbellHubert A Vander Plas (4 patents)Donald T CampbellRobert E Kraft (4 patents)Donald T CampbellMatthew Heydinger (4 patents)Donald T CampbellDonald T Campbell (4 patents)Matthew K SchwiebertMatthew K Schwiebert (14 patents)Hubert A Vander PlasHubert A Vander Plas (9 patents)Robert E KraftRobert E Kraft (6 patents)Matthew HeydingerMatthew Heydinger (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hewlett-packard Company (4 from 9,638 patents)


4 patents:

1. 5880017 - Method of bumping substrates by contained paste deposition

2. 5672542 - Method of making solder balls by contained paste deposition

3. 5586715 - Method of making solder balls by contained paste deposition

4. 5539153 - Method of bumping substrates by contained paste deposition

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as of
12/8/2025
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