Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Active sound attenation system for engine exhaust systems and the like

Active sound attenation system for engine exhaust systems and the like

US Patent 5097923 · Granted Mar 24, 1992

Estimated economic value: $7,174,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Flat panel diffuser2008
Remotely accessible energy control system2004
Electronic cancellation of DC motor noise2001
Low cost controller1997
Adaptive canceller filter module1996
Method of logical operations in home automation1996
In-wire selective active cancellation system1992
In-wire selective active cancellation system1992
Digital virtual earth active cancellation system1992
Method and apparatus for producing tar sand deposits containing conductive layer1991
Method and apparatus for producing tar sand deposits containing conductive layer1991
Fluid temperature monitoring system1991