Patents by Inventor Tameichi Ochiai

Tameichi Ochiai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6048653
    Abstract: The present invention provides a polymerizable composition for a color filter, which comprises a (meth)acrylate copolymer containing alicyclic (meth)acryloyl groups in its side chains, a compound having at least one ethylenically unsaturated double bond, a photopolymerization initiator and a colorant, a color filter obtained by coating the composition on a glass substrate, followed by exposure and development; and a method for producing a color filter, which comprises coating the composition on a glass substrate, followed by exposure and development.The polymerizable composition of the present invention is highly sensitive and excellent in chemical resistance. Accordingly, according to the present invention, it is possible to produce a color filter of a high quality without a protective layer such as an oxygen-shielding film.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: April 11, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tameichi Ochiai, Ryuichiro Takasaki, Noriko Endou, Yuzuru Chika
  • Patent number: 5916713
    Abstract: The present invention provides a polymerizable composition for a color filter, which comprises a (meth)acrylate copolymer containing alicyclic (meth)acryloyl groups in its side chains, a compound having at least one ethylenically unsaturated double bond, a photopolymerization initiator and a colorant, a color filter obtained by coating the composition on a glass substrate, followed by exposure and development; and a method for producing a color filter, which comprises coating the composition on a glass substrate, followed by exposure and development.The polymerizable composition of the present invention is highly sensitive and excellent in chemical resistance. Accordingly, according to the present invention, it is possible to produce a color filter of a high quality without a protective layer such as an oxygen-shielding film.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: June 29, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tameichi Ochiai, Ryuichiro Takasaki, Noriko Endou, Yuzuru Chika
  • Patent number: 5800952
    Abstract: A photopolymerizable composition for a color filter, which comprises a photopolymerization initiator system, a compound having at least one ethylenically unsaturated double bond, a colorant, and a phosphoric (meth)acrylate compound and/or an organic carboxylic anhydride having a molecular weight of at most 800, wherein the content of the colorant is from 20 to 90 wt % based on the total solid content.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: September 1, 1998
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshiyuki Urano, Ryuichiro Takasaki, Jiro Kamimura, Shingo Ikeda, Noriko Endo, Yuzuru Chika, Tameichi Ochiai
  • Patent number: 5532342
    Abstract: An azo metal chelate compound of an azo compound of the formula (I) with a metal: ##STR1## wherein A is a residue forming a heterocyclic ring together with the carbon atom and the nitrogen atom to which it is bonded, X is a residue forming an aromatic group together with the two carbon atoms to which it is bonded, R.sup.1 is an alkyl group which may be substituted, an aryl group which may be substituted, an alkenyl group which may be substituted, or a cycloalkyl group which may be substituted, Y is a hydrogen atom or a cation, and n is an integer of from 1 to 3.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: July 2, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tameichi Ochiai, Yutaka Kurose, Takumi Nagao, Takako Tsukahara, Satoru Imamura
  • Patent number: 5529885
    Abstract: Disclosed are a negative photosensitive composition comprising an alkali-soluble resin, a photo acid generating system, and a crosslinking agent for the alkali-soluble resin which acts on the resin under acidic conditions, in which the crosslinking agent is a highly-alkylated alkoxymethylmelamine resin having a monomer content of from 5 to 40% by weight, and a method for forming a negative photo-resist pattern using the composition. The resist composition is stable during storage and gives good pattern profiles having high aspect ratios even though the resist film is made thick.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: June 25, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tameichi Ochiai, Ryuichiro Takasaki, Yasuhiro Kameyama, Shichiro Takahashi
  • Patent number: 5447823
    Abstract: An azo metal chelate compound of an azo compound of the formula (I) with a metal: ##STR1## wherein A is a residue forming a heterocyclic ring together with the carbon atom and the nitrogen atom to which it is bonded, X is a residue forming an aromatic group together with the two carbon atoms to which it is bonded, R.sup.1 is an alkyl group which may be substituted, an aryl group which may be substituted, an alkenyl group which may be substituted, or a cycloalkyl group which may be substituted, Y is a hydrogen atom or a cation, and n is an integer of from 1 to 3.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: September 5, 1995
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tameichi Ochiai, Yutaka Kurose, Takumi Nagao, Takako Tsukahara, Satoru Imamura
  • Patent number: 5292614
    Abstract: A negative photosensitive composition comprising an alkali-soluble resin, a photo-acid-generating material and a crosslinking agent for the alkali-soluble resin, which acts under an acidic condition, wherein the crosslinking agent is a compound of the following formula (I): ##STR1## wherein each of A.sup.1 to A.sup.10 which are independent of one another, is a hydrogen atom, --CH.sub.2 OH or --CH.sub.2 OR, wherein R is C.sub.1 -C.sub.4 linear or branched chain alkyl, and X is C.sub.2 -C.sub.10 linear or branched chain alkylene, provided that at least four among A.sup.1 to A.sup.10 are --CH.sub.2 OR, and a plurality of --CH.sub.2 OR may be the same or different.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: March 8, 1994
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Tameichi Ochiai, Noriaki Takahashi, Tomoyo Ishiguro
  • Patent number: 5286600
    Abstract: A negative photosensitive composition comprising (a-1) a compound having at least two organic groups of the following formula (I):--OCH.sub.2 OR.sup.1 (I)wherein R.sup.1 is an alkyl group, in its molecule and an alkali-soluble resin, or (a-2) an alkali-soluble resin having at least two organic groups of the above formula (I) in its molecule, and (b) a photo-acid-generating material.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: February 15, 1994
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Tameichi Ochiai, Noriaki Takahashi, Yasuhiro Kameyama
  • Patent number: 5168030
    Abstract: Disclosed herein is an antistatic photo-resist containing an antistatic agent. Since antistatic photo-resist according to the present invention is hardly charged, it can be suitably used as a mask in implanting ions into semiconductor substrate.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: December 1, 1992
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Kasei Corporation
    Inventors: Konoe Miura, Tameichi Ochiai, Yasuhiro Kameyama, Tooru Koyama, Takashi Okabe, Tomoharu Mametani
  • Patent number: 4933257
    Abstract: Disclosed herein is an antistatic photo-resist containing an antistatic agent. Since antistatic photo-resist according to the present invention is hardly charged, it can be suitably used as a mask in implanting ions into semiconductor substrate.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: June 12, 1990
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Chemical Industries Limited
    Inventors: Konoe Miura, Tameichi Ochiai, Yasuhiro Kameyama, Tooru Koyama, Takashi Okabe, Tomoharu Mametani
  • Patent number: 4859563
    Abstract: Disclosed herein is a positive photoresist composition containing (a) a photosensitizer of 1,2-napthtoquinone diazides photosensitive-material comprising an ester of 2,3,4,4'-tetrahydroxybenzophenone in which on the average, not less than two hydroxyl groups of 2,3,4,4'-tetrahydroxybenzophenone have been esterified by 1,2-naphthoquinonediazide-5-sulfonic acid and (b) a novolak resin obtained by condensing a mixture of m-cresol, p-cresol and 2,5-xylenol with formaldehyde.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: August 22, 1989
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Konoe Miura, Tameichi Ochiai, Yasuhiro Kameyama
  • Patent number: 4725523
    Abstract: Disclosed herein is a positive photosensitive composition comprising a 1,2-naphthoquinone diazide compound and a binder resin comprising a novolak resin containing as condensation components .beta.-naphthol, or .alpha.-naphthol and p-cresol.
    Type: Grant
    Filed: October 6, 1986
    Date of Patent: February 16, 1988
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Konoe Miura, Hideki Nagasaka, Noriaki Takahashi, Tameichi Ochiai, Ryuichiro Takasaki
  • Patent number: 4719167
    Abstract: Disclosed herein is a positive photoresist composition containing (a) a photosensitizer of 1,2-naphthoquinone diazides photosensitive-material comprising an ester of 2,3,4,4'-tetrahydroxybenzophenone in which on the average, not less than two hydroxy groups of 2,3,4,4'-tetrahydroxybenzophenone have been esterified by 1,2-naphthoquinonediazide-5-sulfonic acid and (b) a novolak resin obtained by condensing a mixture of m-cresol, p-cresol and 2,5-xylenol with formaldehyde.
    Type: Grant
    Filed: February 4, 1986
    Date of Patent: January 12, 1988
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Konoe Miura, Tameichi Ochiai, Yasuhiro Kameyama
  • Patent number: 4650741
    Abstract: Disclosed herein is a positive photosensitive composition comprising a 1,2-naphthoquinone diazide compound and a binder resin comprising a novolak resin containing as condensation components .beta.-naphthol, or .alpha.-naphthol and p-cresol.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: March 17, 1987
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Konoe Miura, Hideki Nagasaka, Noriaki Takahashi, Tameichi Ochiai, Ryuichiro Takasaki