Masakichi Yahagi

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Molecular compound of fluoran compound and ketone
- Patent number 4,727,162
- Issue date Feb 23, 1988
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Addition compound of fluoran compounds and ketone
- Patent number 4,695,640
- Issue date Sep 22, 1987
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chromogenic fluoran derivatives
- Patent number 4,677,203
- Issue date Jun 30, 1987
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Fluoran compound and color forming record materials using the same
- Patent number 4,668,967
- Issue date May 26, 1987
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3-N-isobutylethylamino-6-methyl-7-phenylaminofluoran
- Patent number 4,665,199
- Issue date May 12, 1987
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chromogenic recording materials
- Patent number 4,642,357
- Issue date Feb 10, 1987
- Shin Nisso Kako Cp., Ltd.
- Masakichi Yahagi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
4-hydroxy-4'-isopropoxydiphenylsulfone and its use for color-develo...
- Patent number 4,616,239
- Issue date Oct 7, 1986
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chromogenic recording materials
- Patent number 4,613,879
- Issue date Sep 23, 1986
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chromogenic recording materials
- Patent number 4,590,498
- Issue date May 20, 1986
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
4-Hydroxy-4'-isopropoxydiphenylsulfone and its use for color-develo...
- Patent number 4,568,766
- Issue date Feb 4, 1986
- Nippon Soda Company Limited
- Masakichi Yahagi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Heat-sensitive color-developing composition
- Patent number 4,503,446
- Issue date Mar 5, 1985
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Chromogenic fluoran derivatives and the preparation and use thereof
- Patent number 4,410,708
- Issue date Oct 18, 1983
- Shin Nisso Kako Co., Ltd.
- Masakichi Yahagi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Masakichi Yahagi

Person

Patents Grantslast 30 patents

Molecular compound of fluoran compound and ketone

Addition compound of fluoran compounds and ketone

Chromogenic fluoran derivatives

Fluoran compound and color forming record materials using the same

3-N-isobutylethylamino-6-methyl-7-phenylaminofluoran

Chromogenic recording materials

4-hydroxy-4'-isopropoxydiphenylsulfone and its use for color-develo...

Chromogenic recording materials

Chromogenic recording materials

4-Hydroxy-4'-isopropoxydiphenylsulfone and its use for color-develo...

Heat-sensitive color-developing composition

Chromogenic fluoran derivatives and the preparation and use thereof