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last 30 patents
Information
Patent Grant
Process for producing polyamide acid having siloxane bonds and poly...
Patent number
4,847,358
Issue date
Jul 11, 1989
Hitachi Chemical Company, Ltd.
Mitsumasa Kojima
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Semiconductor device and process for producing the same
Patent number
4,803,543
Issue date
Feb 7, 1989
Hitachi, Ltd.
Hideo Inayoshi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Process for producing a pattern with negative-type photosensitive c...
Patent number
4,801,519
Issue date
Jan 31, 1989
Hitachi Chemical Company Ltd.
Shigeru Koibuchi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polyimide precursor resin composition and semiconductor device usin...
Patent number
4,758,476
Issue date
Jul 19, 1988
Hitachi Chemical Company, Ltd.
Hiroyoshi Sekine
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Resin encapsulated semiconductor device
Patent number
4,758,875
Issue date
Jul 19, 1988
Hitachi, Ltd.
Koji Fujisaki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Liquid crystal orientation controlling film and liquid crystal devi...
Patent number
4,735,492
Issue date
Apr 5, 1988
Hitachi Chemical Company, Ltd.
Hiroyoshi Sekine
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing fine patterns
Patent number
4,722,883
Issue date
Feb 2, 1988
Hitachi, Ltd.
Shigeru Koibuchi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photosensitive composition with 4-azido-2'-methoxychalcone
Patent number
4,698,291
Issue date
Oct 6, 1987
Hitachi Chemical Co., Ltd.
Shigeru Koibuchi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Composition for protective coating material
Patent number
4,645,688
Issue date
Feb 24, 1987
Hitachi Chemical Company, Ltd.
Daisuke Makino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Photosensitive resin composition and method for forming fine patter...
Patent number
4,554,237
Issue date
Nov 19, 1985
Hitach, Ltd.
Fumio Kataoka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electron beam or X-ray reactive image-formable resinous composition
Patent number
4,513,077
Issue date
Apr 23, 1985
Hitachi Chemical Company, Ltd.
Asao Isobe
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Composition for protective coating material
Patent number
4,511,705
Issue date
Apr 16, 1985
Hitachi Chemical Company, Ltd.
Daisuke Makino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Compositions of materials for forming protective film in semiconduc...
Patent number
4,497,922
Issue date
Feb 5, 1985
Hitachi Chemical Company, Ltd.
Hidetaka Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Semiconductor memories with .alpha. shield
Patent number
4,494,217
Issue date
Jan 15, 1985
Hitachi, Ltd.
Hiroshi Suzuki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of preparing polyamide acid for processing of semiconductors
Patent number
4,485,234
Issue date
Nov 27, 1984
Hitachi Chemical Company, Ltd.
Daisuke Makino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of preparing polyamide acid for processing of semiconductors
Patent number
4,447,596
Issue date
May 8, 1984
Hitachi Chemical Company, Ltd.
Daisuke Makino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing polyimide-amide-carboxylic acid
Patent number
4,338,427
Issue date
Jul 6, 1982
Hitachi Chemical Company Ltd.
Iwao Maekawa
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Intermediate, copolymer resin and production thereof
Patent number
4,338,426
Issue date
Jul 6, 1982
Hitachi Chemical Company, Ltd.
Hidetaka Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of preparing polyamide acid type intermediates for processin...
Patent number
4,225,702
Issue date
Sep 30, 1980
Hitachi Chemical Company, Ltd.
Daisuke Makino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...