Hiroyasu Kato

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Patents Grantslast 30 patents

Information Patent Grant
Telescopic ball-point pen
- Patent number 6,942,411
- Issue date Sep 13, 2005
- Katoh Kinzoku Kogyo Kabushiki Kaisha
- Hiroyasu Kato
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Telescopic ball-point pen
- Patent number 6,474,889
- Issue date Nov 5, 2002
- Katoh Kinzoku Kogyo Kabushiki Kaisha
- Hiroyasu Kato
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Lock for deflectable writing utensil
- Patent number 5,588,764
- Issue date Dec 31, 1996
- Katoh Kinzoku Kogyo Kabushiki Kaisha
- Hiroyasu Kato
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
Telescopic ball-point pen
- Publication number 20050078999
- Publication date Apr 14, 2005
- Katoh Kinzoku Kogyo Kabushiki kaisha
- Hiroyasu Kato
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES