Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7406180 | Headphone with behind-the-head headband There is provided a headphone with a behind-the-head headband comprising at least one transducer and a behind-the-head headband for receiving the transducer. The behind-the-head headband further comprises first and second contact locations for resting against a temp... | 07/29/2008 |
| 6931136 | Infrared emitter An infrared emitter comprises a preamplifier, an infrared RF emitter, an infrared channel controller and a photodiode emitting-medium. With the emitter, by switching between two channels with an infrared channel controller, and by the mode of arrangement of a plural... | 08/16/2005 |
| 4727583 | Telephone transducer with improved frequency response An audio arrangement includes a thin speaker/transducer positioned within a portable housing wherein the speaker cavity is dimensioned to move the resonant frequency of the speaker/housing combination up to approximately the free-air cutoff frequency of t... | 02/23/1988 |
