Takashi Iwasaki

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Patents Grantslast 30 patents

Information Patent Grant
Front face erasable microcapsule magnetophoretic display sheet, era...
- Patent number 7,070,856
- Issue date Jul 4, 2006
- A-Son Enterprise, Inc.
- Takashi Iwasaki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Microcapsule magnetic display sheet and a method thereof
- Patent number 6,299,972
- Issue date Oct 9, 2001
- Chemitech, Inc.
- Takashi Iwasaki
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Microcapsules for magnetic display and magnetic display sheet compr...
- Patent number 5,972,493
- Issue date Oct 26, 1999
- Chemitech, Inc.
- Takashi Iwasaki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
Front face erasable microcapsule magnetophoretic writing magnet
- Publication number 20060292361
- Publication date Dec 28, 2006
- Takashi Iwasaki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Front face erasable microcapsule magnetophoretic erasing magnet
- Publication number 20060147754
- Publication date Jul 6, 2006
- Takashi Iwasaki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Front face erasable microcapsule magnetophoretic display sheet, era...
- Publication number 20060093858
- Publication date May 4, 2006
- A SON ENTERPRISE, INC.
- Takashi Iwasaki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Front face erasable microcapsule magnetophoretic display sheet, era...
- Publication number 20030170457
- Publication date Sep 11, 2003
- A Son Enterprise Inc
- Takashi Iwasaki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES