Kiyoharu Hasegawa

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Carboxylate and heat-sensitive recording material using same
- Patent number 5,691,272
- Issue date Nov 25, 1997
- Mitsui Toatsu Chemicals, Inc.
- Mansuke Matsumoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color-developing agents and color-developing sheets
- Patent number 5,647,896
- Issue date Jul 15, 1997
- Mitsui Toatsu Chemicals, Inc.
- Takeshi Nishimura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Carboxylate and heat-sensitive recording material using same
- Patent number 5,559,247
- Issue date Sep 24, 1996
- Mitsui Toatsu Chemicals, Inc.
- Mansuke Matsumoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polyvalent metal salt of salicyclic acid resin and process for prep...
- Patent number 5,525,686
- Issue date Jun 11, 1996
- Mitsui Toatsu Chemicals, Inc.
- Yoshimitsu Tanabe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Color-developing compositions and their use
- Patent number 5,447,901
- Issue date Sep 5, 1995
- Mitsui Toatsu Chemical, Inc.
- Keizaburo Yamaguchi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive recording materials and phenol compounds
- Patent number 5,391,806
- Issue date Feb 21, 1995
- Mitsui Toatsu Chemicals, Incorporated
- Atsuo Otsuji
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color-developing compositions and their use
- Patent number 5,376,615
- Issue date Dec 27, 1994
- Mitsui Toatsu Chemicals, Incorporated
- Keizaburo Yamaguchi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Fluoran compounds, crystalline toluene adducts thereof, recording m...
- Patent number 5,324,704
- Issue date Jun 28, 1994
- Mitsui Toatsu Chemicals, Inc.
- Masakatsu Nakatsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Salicylic acid derivatives, the process for preparing the same and...
- Patent number 5,306,688
- Issue date Apr 26, 1994
- Mitsui Toatsu Chemicals, Inc.
- Yoshimitsu Tanabe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Crystals of fluoran compound, crystalline solvates thereof, process...
- Patent number 5,302,571
- Issue date Apr 12, 1994
- Mitsui Toatsu Chemicals, Inc.
- Atsuo Otsuji
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Recording material comprising crystal of fluoran compound
- Patent number 5,300,473
- Issue date Apr 5, 1994
- Mitsui Toatsu Chemicals, Inc.
- Masakatsu Nakatsuka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Process for preparation of a recording material comprising a novel...
- Patent number 5,300,661
- Issue date Apr 5, 1994
- Mitsui Toatsu Chemicals, Inc.
- Masakatsu Nakatsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Recording material comprising novel crystalline fluoran and process...
- Patent number 5,283,222
- Issue date Feb 1, 1994
- Mitsui Toatsu Chemicals, Inc.
- Masakatsu Nakatsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Thermochromic materials
- Patent number 5,281,570
- Issue date Jan 25, 1994
- Mitsui Toatsu Chemicals, Incorporated
- Kiyoharu Hasegawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive recording materials and phenol compounds
- Patent number 5,270,281
- Issue date Dec 14, 1993
- Mitsui Toatsu Chemicals, Incorporated
- Atsuo Otsuji
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color-developing composition, aqueous suspension of the composition...
- Patent number 5,260,403
- Issue date Nov 9, 1993
- Mitsui Toatsu Chemicals, Inc.
- Keizaburo Yamaguchi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Crystals of fluoran compound, crystalline solvates thereof and proc...
- Patent number 5,245,049
- Issue date Sep 14, 1993
- Mitsui Toatsu Chemicals, Inc.
- Atsuo Otsuji
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Fluoran compound, heat sensitive recording materials comprising flu...
- Patent number 5,231,069
- Issue date Jul 27, 1993
- Mitsui Toatsu Chemicals Inc.
- Masakatsu Nakatsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluoran compounds, crystalline toluene adducts thereof, recording m...
- Patent number 5,220,038
- Issue date Jun 15, 1993
- Mitsui Toatsu Chemicals, Inc.
- Masakatsu Nakatsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Crystal of fluoran compound and preparation process of the crystal
- Patent number 5,210,221
- Issue date May 11, 1993
- Mitsui Toatsu Chemicals, Inc.
- Masakatsu Nakatsuka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Fluoran compounds, process for preparation thereof and recording ma...
- Patent number 5,208,209
- Issue date May 4, 1993
- Mitsui Toatsu Chemicals, Inc.
- Atsuo Otsuji
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluoran compound, useful in heat sensitive recording materials
- Patent number 5,194,632
- Issue date Mar 16, 1993
- Mitsui Toatsu Chemicals Inc.
- Masakatsu Nakatsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Crystal of fluoran compound
- Patent number 5,185,453
- Issue date Feb 9, 1993
- Mitsui Toatsu Chemicals, Inc.
- Masakatsu Nakatsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Reaction system modifier suitable for use in the productions of mic...
- Patent number 5,118,756
- Issue date Jun 2, 1992
- Mitsui Toatsu Chemicals, Inc.
- Makoto Asano
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Fluoran compounds, process for preparation thereof and recording ma...
- Patent number 5,087,706
- Issue date Feb 11, 1992
- Mitsui Toatsu Chemicals, Inc.
- Atsuo Otsuji
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Aqueous suspension and preparation method thereof
- Patent number 4,997,874
- Issue date Mar 5, 1991
- Mitsui Toatsu Chemicals, Incorporated
- Makoto Asano
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Temperature history indicator and its manufacturing method
- Patent number 4,931,420
- Issue date Jun 5, 1990
- Mitsui Toatsu Chemicals, Inc.
- Makoto Asano
- G01 - MEASURING TESTING
Information Patent Grant
Microcapsule-containing water-base coating formulation and copying...
- Patent number 4,760,108
- Issue date Jul 26, 1988
- Mitsui Toatsu Chemicals, Incorporated
- Makoto Asano
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Novel benzoquinone derivatives and production process thereof as we...
- Patent number 4,735,744
- Issue date Apr 5, 1988
- Mitsui Toatsu Chemicals, Incorporated
- Michihiro Tsujimoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of triarylmethane compounds
- Patent number 4,632,987
- Issue date Dec 30, 1986
- Mitsui Toatsu Chemicals Incorporated
- Michihiro Tsujimoto
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Kiyoharu Hasegawa

Person

Patents Grantslast 30 patents

Carboxylate and heat-sensitive recording material using same

Color-developing agents and color-developing sheets

Carboxylate and heat-sensitive recording material using same

Polyvalent metal salt of salicyclic acid resin and process for prep...

Color-developing compositions and their use

Heat-sensitive recording materials and phenol compounds

Color-developing compositions and their use

Fluoran compounds, crystalline toluene adducts thereof, recording m...

Salicylic acid derivatives, the process for preparing the same and...

Crystals of fluoran compound, crystalline solvates thereof, process...

Recording material comprising crystal of fluoran compound

Process for preparation of a recording material comprising a novel...

Recording material comprising novel crystalline fluoran and process...

Thermochromic materials

Heat-sensitive recording materials and phenol compounds

Color-developing composition, aqueous suspension of the composition...

Crystals of fluoran compound, crystalline solvates thereof and proc...

Fluoran compound, heat sensitive recording materials comprising flu...

Fluoran compounds, crystalline toluene adducts thereof, recording m...

Crystal of fluoran compound and preparation process of the crystal

Fluoran compounds, process for preparation thereof and recording ma...

Fluoran compound, useful in heat sensitive recording materials

Crystal of fluoran compound

Reaction system modifier suitable for use in the productions of mic...

Fluoran compounds, process for preparation thereof and recording ma...

Aqueous suspension and preparation method thereof

Temperature history indicator and its manufacturing method

Microcapsule-containing water-base coating formulation and copying...

Novel benzoquinone derivatives and production process thereof as we...

Process for the preparation of triarylmethane compounds