Ryoichi Kaiwa

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Battery pack removing device
- Patent number 6,490,436
- Issue date Dec 3, 2002
- Matsushita Electronic Industrial Co., Ltd.
- Ryoichi Kaiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Resiliently deformable battery pack
- Patent number 6,451,474
- Issue date Sep 17, 2002
- Matsushita Electric Industrial Co., Ltd.
- Katsumi Kozu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Interconnection structure between portable telephone and battery pack
- Patent number 6,204,631
- Issue date Mar 20, 2001
- Matsushita Electric Industrial Co., Ltd.
- Ryoichi Kaiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Antenna retracting structure of portable radio
- Patent number 5,335,367
- Issue date Aug 2, 1994
- Matsushita Electric Industrial Co., Ltd.
- Naotomo Adachi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Portable radio having cover releasing mechanism and receive switch...
- Patent number 5,327,584
- Issue date Jul 5, 1994
- Matsushita Electric Industrial Co., Ltd.
- Naotomo Adachi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable radio transceiver apparatus
- Patent number 5,046,131
- Issue date Sep 3, 1991
- Matsushita Electric Industrial Co., Ltd.
- Akira Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable type mobile radio telephone
- Patent number 4,881,258
- Issue date Nov 14, 1989
- Matsushita Electric Industrial Co., Ltd.
- Ryoichi Kaiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Keyboard assembly with lighting
- Patent number 4,670,633
- Issue date Jun 2, 1987
- Matsushita Electric Industrial Co., Ltd.
- Ryoichi Kaiwa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Locking apparatus for telephone
- Patent number 4,609,790
- Issue date Sep 2, 1986
- Matsushita Electric Industrial Co., Ltd.
- Ryoichi Kaiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Ryoichi Kaiwa

Person

Patents Grantslast 30 patents

Battery pack removing device

Resiliently deformable battery pack

Interconnection structure between portable telephone and battery pack

Antenna retracting structure of portable radio

Portable radio having cover releasing mechanism and receive switch...

Portable radio transceiver apparatus

Portable type mobile radio telephone

Keyboard assembly with lighting

Locking apparatus for telephone