Keigo Kato

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Aichi-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing spool valve
- Patent number 6,675,477
- Issue date Jan 13, 2004
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Spool valve
- Patent number 6,520,210
- Issue date Feb 18, 2003
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of manufacturing a shaft with surfaces thereof modified
- Patent number 6,202,283
- Issue date Mar 20, 2001
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of manufacturing a shaft having a fluid flow passage
- Patent number 6,089,068
- Issue date Jul 18, 2000
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process for manufacturing a spool valve
- Patent number 6,061,906
- Issue date May 16, 2000
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Spool valve and process for manufacturing the same
- Patent number 5,782,268
- Issue date Jul 21, 1998
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Method for manufacturing spool valve
- Publication number 20030070296
- Publication date Apr 17, 2003
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Reciprocating type thread rolling apparatus
- Publication number 20020013178
- Publication date Jan 31, 2002
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Spool valve and method for manufacturing the same
- Publication number 20010052369
- Publication date Dec 20, 2001
- Aoyama Seisakusho Co., Ltd.
- Keigo Kato
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...