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Kirkland, WA, United States of America

Willem Bulthuis

Average Co-Inventor Count = 2.11

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 = 443

Willem BulthuisYevgeniy Eugene Shteyn (2 patents)Willem BulthuisLisa Holzhauser (2 patents)Willem BulthuisRobert Lambourne (2 patents)Willem BulthuisMieko Kusano (2 patents)Willem BulthuisEugene Shteyn (1 patent)Willem BulthuisWillem Bulthuis (4 patents)Yevgeniy Eugene ShteynYevgeniy Eugene Shteyn (34 patents)Lisa HolzhauserLisa Holzhauser (5 patents)Robert LambourneRobert Lambourne (3 patents)Mieko KusanoMieko Kusano (2 patents)Eugene ShteynEugene Shteyn (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Koninklijke Philips Corporation N.V. (3 from 21,376 patents)

2. Koninklijke Phillips Electronics N.v. (1 from 56 patents)


4 patents:

1. 7310513 - Hand-ear user interface for hand-held device

2. 6978127 - Hand-ear user interface for hand-held device

3. 6933432 - Media player with 'DJ' mode

4. 6494381 - Cooling fan in sync with audio output level

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12/21/2025
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