Masahiro Umewaka

Person

Gunma-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Receiver
- Patent number 7,386,328
- Issue date Jun 10, 2008
- Sanyo Electric Co., LTD
- Masahiro Umewaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
FSK signal demodulation circuit
- Patent number 7,369,629
- Issue date May 6, 2008
- SANYO Electric Co., Ltd.
- Masahiro Umewaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tuning circuit with amplitude attenuation function and integrated c...
- Patent number 7,330,708
- Issue date Feb 12, 2008
- Sanyo Electric Co., LTD
- Masahiro Umewaka
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Hysteresis comparator and reset signal generator
- Patent number 7,271,636
- Issue date Sep 18, 2007
- Sanyo Electric Co., LTD
- Hiroya Yamamoto
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tuning circuit having amplitude-varying function
- Patent number 7,171,178
- Issue date Jan 30, 2007
- Sanyo Electric Co., LTD
- Masahiro Umewaka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Tone control device and sound volume/tone control device for reduci...
- Patent number 6,108,428
- Issue date Aug 22, 2000
- Sanyo Electric Co., Ltd.
- Masaaki Suzuki
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
AUTHENTICATION SYSTEM
- Publication number 20060223500
- Publication date Oct 5, 2006
- Sanyo Electric Co., Ltd.
- Shinji OSUGI
- G07 - CHECKING-DEVICES
Information Patent Application
HYSTERESIS COMPARATOR AND RESET SIGNAL GENERATOR
- Publication number 20060091924
- Publication date May 4, 2006
- Sanyo Electric Co., Ltd.
- Hiroya YAMAMOTO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Keyless entry system, transmitter, and receiver
- Publication number 20060087403
- Publication date Apr 27, 2006
- Sanyo Electric Co., Ltd.
- Hiroya Yamamoto
- G07 - CHECKING-DEVICES
Information Patent Application
Signal processing device for collating bit, signal processing metho...
- Publication number 20050152402
- Publication date Jul 14, 2005
- Sanyo Electric Co., Ltd.
- Masahiro Umewaka
- B60 - VEHICLES IN GENERAL
Information Patent Application
Tuning circuit with amplitude attenuation function and integrated c...
- Publication number 20050147193
- Publication date Jul 7, 2005
- Sanyo Electric Co., Ltd.
- Masahiro Umewaka
- B60 - VEHICLES IN GENERAL
Information Patent Application
FSK signal demodulation circuit
- Publication number 20050084041
- Publication date Apr 21, 2005
- Masahiro Umewaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Receiver
- Publication number 20050070341
- Publication date Mar 31, 2005
- SANYO ELECTRIC CO., LTD.
- Masahiro Umewaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tuning circuit having amplitude-varying function
- Publication number 20040198285
- Publication date Oct 7, 2004
- Masahiro Umewaka
- G06 - COMPUTING CALCULATING COUNTING

Masahiro Umewaka

Person

Patents Grantslast 30 patents

Receiver

FSK signal demodulation circuit

Tuning circuit with amplitude attenuation function and integrated c...

Hysteresis comparator and reset signal generator

Tuning circuit having amplitude-varying function

Tone control device and sound volume/tone control device for reduci...

Patents Applicationslast 30 patents

AUTHENTICATION SYSTEM

HYSTERESIS COMPARATOR AND RESET SIGNAL GENERATOR

Keyless entry system, transmitter, and receiver

Signal processing device for collating bit, signal processing metho...

Tuning circuit with amplitude attenuation function and integrated c...

FSK signal demodulation circuit

Receiver

Tuning circuit having amplitude-varying function