Growing community of inventors

Encino, CA, United States of America

Geoffrey Christopherson

Average Co-Inventor Count = 5.00

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 = 541

Geoffrey ChristophersonMyk Wayne Lum (3 patents)Geoffrey ChristophersonYoshiyuki Takeuchi (3 patents)Geoffrey ChristophersonPaul Bauman (3 patents)Geoffrey ChristophersonJohn Lee (2 patents)Geoffrey ChristophersonTimothy J Shuttleworth (2 patents)Geoffrey ChristophersonPeter Chaikin (2 patents)Geoffrey ChristophersonC Rex Reed (2 patents)Geoffrey ChristophersonBrian Ellison (2 patents)Geoffrey ChristophersonMiguel Paganini (2 patents)Geoffrey ChristophersonGregory Wright (2 patents)Geoffrey ChristophersonGeoffrey Christopherson (5 patents)Myk Wayne LumMyk Wayne Lum (232 patents)Yoshiyuki TakeuchiYoshiyuki Takeuchi (10 patents)Paul BaumanPaul Bauman (6 patents)John LeeJohn Lee (63 patents)Timothy J ShuttleworthTimothy J Shuttleworth (17 patents)Peter ChaikinPeter Chaikin (4 patents)C Rex ReedC Rex Reed (4 patents)Brian EllisonBrian Ellison (4 patents)Miguel PaganiniMiguel Paganini (2 patents)Gregory WrightGregory Wright (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Harman International Industries, Inc. (5 from 1,933 patents)


5 patents:

1. 9560460 - Self-calibration loudspeaker system

2. 8577048 - Self-calibrating loudspeaker system

3. D689042 - Loudspeaker

4. D687814 - Loudspeaker housing

5. D682255 - Handle for a loudspeaker

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as of
12/20/2025
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