Tadahiko Akiyama

Person

Koriyama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Personal-servicing communication system
- Patent number 5,524,049
- Issue date Jun 4, 1996
- Nippon Communication Industrial Co., Ltd.
- Tadahiko Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Personal-servicing communication system
- Patent number 5,440,625
- Issue date Aug 8, 1995
- Nippon Communication Industrial Co., Ltd.
- Tadahiko Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Personal-servicing communication system
- Patent number 5,153,906
- Issue date Oct 6, 1992
- Nippo Communication Industrial Co., Ltd.
- Tadahiko Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Personal-servicing communication system
- Patent number 4,961,217
- Issue date Oct 2, 1990
- Hitachi Telecom Technologied, Ltd.
- Tadahiko Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Personal-servicing communication system
- Patent number 4,759,056
- Issue date Jul 19, 1988
- Nippo Communication Industrial Co., Ltd.
- Tadahiko Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system with voice announcement means
- Patent number 4,720,848
- Issue date Jan 19, 1988
- Nippo Communication Industrial Co.
- Tadahiko Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Personal-signaling communication system
- Patent number 4,680,785
- Issue date Jul 14, 1987
- Nippo Communication Industrial Co., Ltd.
- Tadahiko Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Tadahiko Akiyama

Person

Patents Grantslast 30 patents

Personal-servicing communication system

Personal-servicing communication system

Personal-servicing communication system

Personal-servicing communication system

Personal-servicing communication system

Communication system with voice announcement means

Personal-signaling communication system