Katsunori Utsumi

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Patents Grantslast 30 patents

Information Patent Grant
Cleaning method for telephone number list and system implemented th...
- Patent number 6,449,360
- Issue date Sep 10, 2002
- Jintec Corporation
- Katsunori Utsumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Credit status checking system for transaction processing system and...
- Patent number 5,974,119
- Issue date Oct 26, 1999
- Jintec Corporation
- Katsunori Utsumi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Device and method for cleaning telephone number list
- Patent number 5,796,816
- Issue date Aug 18, 1998
- Jintec Corporation
- Katsunori Utsumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cleaning system for telephone number list
- Patent number 5,636,267
- Issue date Jun 3, 1997
- Jintec Corporation
- Katsunori Utsumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE