Fumio Okumura

Person

Tokyo, JP

People

Patents Grantslast 30 patents

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
Heat-sensitive recording material
- Patent number 5,063,197
- Issue date Nov 5, 1991
- Mitsubishi Paper Mills Limited
- Atsuo Goto
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive recording material
- Patent number 4,999,332
- Issue date Mar 12, 1991
- Mitsubishi Paper Mills, Limited
- Fumio Okumura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive recording material
- Patent number 4,923,845
- Issue date May 8, 1990
- 501 Mitsubishi Paper Mills, Ltd.
- Naomasa Koike
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Colorless carbazole dyes for recording materials
- Patent number 4,737,587
- Issue date Apr 12, 1988
- Mitsubishi Paper Mills, Ltd.
- Fumio Okumura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing microcapsules
- Patent number 4,711,749
- Issue date Dec 8, 1987
- Mitsubishi Paper Mills, Ltd.
- Takao Kosaka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Chemically resistant thermosensitive recording paper
- Patent number 4,594,269
- Issue date Jun 10, 1986
- Mitsubishi Paper Mills, Ltd.
- Masahiro Miyauchi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Microcapsule and process for their production
- Patent number 4,533,599
- Issue date Aug 6, 1985
- Mitsubishi Paper Mills, Ltd.
- Fumio Okumura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thermosensitive recording material
- Patent number 4,436,783
- Issue date Mar 13, 1984
- Mitsubishi Paper Mills, Ltd.
- Fumio Okumura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Chemically resistant thermosensitive recording paper
- Patent number 4,415,627
- Issue date Nov 15, 1983
- Mitsubishi Paper Mills, Ltd.
- Masahiro Miyauchi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive recording paper causing reduced thermal head abrasion
- Patent number 4,396,684
- Issue date Aug 2, 1983
- Mitsubishi Paper Mills, Ltd.
- Sadao Morishita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive recording composition with improved image stability
- Patent number 4,320,039
- Issue date Mar 16, 1982
- Mitsubishi Paper Mills, Ltd.
- Sadao Morishita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive recording paper improved in keeping quality of groun...
- Patent number 4,265,978
- Issue date May 5, 1981
- Mitsubishi Paper Mills, Ltd.
- Sadao Morishita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Fumio Okumura

Person

Patents Grantslast 30 patents

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

Heat-sensitive recording material

Heat-sensitive recording material

Heat-sensitive recording material

Colorless carbazole dyes for recording materials

Process for producing microcapsules

Chemically resistant thermosensitive recording paper

Microcapsule and process for their production

Thermosensitive recording material

Chemically resistant thermosensitive recording paper

Heat-sensitive recording paper causing reduced thermal head abrasion

Heat-sensitive recording composition with improved image stability

Heat-sensitive recording paper improved in keeping quality of groun...