Haruo Yamashita

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Hyogo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Writing instrument operated by a finger at a holding position
- Patent number 6,095,706
- Issue date Aug 1, 2000
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing instrument with drying-preventing mechanism
- Patent number 5,048,990
- Issue date Sep 17, 1991
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Mechanical pencil having an automatic lead extending mechanism
- Patent number 4,979,839
- Issue date Dec 25, 1990
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Valve operating mechanism
- Patent number 4,966,483
- Issue date Oct 30, 1990
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Mechanical pencil with a fluid actuator
- Patent number 4,911,569
- Issue date Mar 27, 1990
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES