Kazuo Shimizu

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Neyagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Writing instrument with sealing cap and additional rearward seal
- Patent number 4,629,348
- Issue date Dec 16, 1986
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing instrument with movable closure and second sealing means
- Patent number 4,575,271
- Issue date Mar 11, 1986
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Mechanical pencil with self-contained insert
- Patent number 4,544,295
- Issue date Oct 1, 1985
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing instrument with sealing cap retained in tip
- Patent number 4,479,732
- Issue date Oct 30, 1984
- Ancos Co., Ltd.
- Kazuo Shimizu
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing instrument with sealing tip
- Patent number 4,469,462
- Issue date Sep 4, 1984
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Mechanical pencil
- Patent number 4,382,706
- Issue date May 10, 1983
- Ancos Co., Ltd.
- Yasuyuki Hashimoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES