Koichiro Kashiwagi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Telephone set and response method to incoming call
- Patent number 7,050,572
- Issue date May 23, 2006
- NEC Corporation
- Koichiro Kashiwagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Phone apparatus having redialing function capable of surely prevent...
- Patent number 6,963,639
- Issue date Nov 8, 2005
- NEC Infrontia Corporation
- Fumiyoshi Toyoshima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key telephone system with reduction of delay of ring tone generatio...
- Patent number 5,260,992
- Issue date Nov 9, 1993
- NEC Corporation
- Koichiro Kashiwagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Phone apparatus having redialing function capable of surely prevent...
- Publication number 20020154758
- Publication date Oct 24, 2002
- NEC INFRONTIA CORPORATION
- Fumiyoshi Toyoshima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Telephone set and response method to incoming call
- Publication number 20010043699
- Publication date Nov 22, 2001
- NEC Corporation
- Koichiro Kashiwagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE