Tsukasa Felt Shoji Co., Ltd.

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ink introducing tube and writing instrument incorporated with the same
- Patent number 6,659,671
- Issue date Dec 9, 2003
- Tsukasa Felt Shoji Kabushiki Kaisha
- Masaaki Fukami
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Process for producing sponge rubber stamp having open cell
- Patent number 5,397,417
- Issue date Mar 14, 1995
- Mitsubishi Pencil Kabushiki Kaisha
- Kazumi Goto
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Writing nib made of synthetic resin
- Patent number 4,973,182
- Issue date Nov 27, 1990
- Tsukasa Felt Shoji Co., Ltd.
- Ken Nakano
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

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