Tamura; Yoshiharu

Patent Applications and Registrations

Patent applications and USPTO patent grants for Tamura; Yoshiharu.The latest application filed is for "portable radio apparatus having variable impedance matching circuit between antenna and radio circuit".

Company Profile

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Tamura; Yoshiharu - Tokyo JP
Tamura; Yoshiharu - Yokohama JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Portable radio apparatus having variable impedance matching circuit between antenna and radio circuit Grant 5,335,368 - Tamura August 2, 1	1994-08-02
Antenna system for portable radio apparatus Grant 5,255,001 - Tamura , et al. October 19, 1	1993-10-19
Vehicular power booster circuitry for multi-level portable transceiver Grant 5,193,219 - Tamura March 9, 1	1993-03-09
Apparatus for displaying the remaining charge of rechargeable battery Grant 5,043,651 - Tamura August 27, 1	1991-08-27
Portable radio communication apparatus having diversity reception function Grant 4,914,714 - Tamura April 3, 1	1990-04-03
Temperature stabilized RF detector Grant 4,866,396 - Tamura September 12, 1	1989-09-12
Booster and charger unit used for hand-held portable telephone and having overheat protection circuit Grant 4,850,006 - Sasaki , et al. July 18, 1	1989-07-18
Battery-powered radio communication apparatus capable of prolonging the communicable state thereof Grant 4,709,404 - Tamura , et al. November 24, 1	1987-11-24
Engine starting air fuel ratio control system Grant 4,576,132 - Nakajima , et al. March 18, 1	1986-03-18
Air-to-fuel ratio control system for an engine Grant 4,572,135 - Nakajima , et al. February 25, 1	1986-02-25
Output power control circuit for power amplifier Grant 4,510,460 - Tamura April 9, 1	1985-04-09
Miniaturized antenna duplexer using SAW filter Grant 4,509,165 - Tamura April 2, 1	1985-04-02

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