For the Inventor, By the Inventor

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Westlake Village, CA, United States of America

Hersh Acoustical Engineering, Inc.

USPTO Granted Patents = 2

Forward Citations = 68

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4 inventors (with patents filed for the assignee):

Bruce E Walker (2 out of 2 patents)

Alan S Hersh (2 out of 5 patents)

Larry Heidelberg (1 out of 1 patent)

4. Edward J Rice (1 out of 3 patents)

2 patents: Sort by Forward Citations

1. 6201872 - Active control source cancellation and active control Helmholtz resonator absorption of axial fan rotor-stator interaction noise (2001-03-13),

2. 5979593 - Hybrid mode-scattering/sound-absorbing segmented liner system and method (1999-11-09),

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USPTO Data Jan 1 1976 - Jan 13 2026

2 Patents

#75 in Westlake Village, CA

#20,579 in California

#92,775 in US

Westlake Village, CA, United States of America

Hersh Acoustical Engineering, Inc.

Forward Citations = 68

4 inventors:

Bruce E Walker (2 out of 2 patents)

Alan S Hersh (2 out of 5 patents)

Larry Heidelberg (1 out of 1 patent)

4. Edward J Rice (1 out of 3 patents)

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