Patents by Inventor Hidetaka Oka

Hidetaka Oka 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: 9113536
    Abstract: The present invention relates to electroluminescent devices that comprise organic layers that contain triazole compounds of the formula (I), or formula (II). The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: August 18, 2015
    Assignee: BASF SE
    Inventors: Hidetaka Oka, Ramachandra V. Joshi, Junichi Tanabe, Sanjoy Lahiri, Dhaval Vashi, Preetam Ghogale
  • Patent number: 8946984
    Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain dibenzofuran compounds. The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: February 3, 2015
    Assignee: BASF SE
    Inventors: Junichi Tanabe, Hidetaka Oka, Hiroshi Yamamoto
  • Publication number: 20140217335
    Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain dibenzofuran compounds. The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 7, 2014
    Applicant: BASF SE
    Inventors: JUNICHI TANABE, HIDETAKA OKA, HIROSHI YAMAMOTO
  • Patent number: 8735610
    Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain dibenzofuran compounds. The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: May 27, 2014
    Assignee: BASF SE
    Inventors: Junichi Tanabe, Hidetaka Oka, Hiroshi Yamamoto
  • Publication number: 20110248217
    Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain dibenzofuran compounds. The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Application
    Filed: June 20, 2011
    Publication date: October 13, 2011
    Inventors: JUNICHI TANABE, Hidetaka Oka, Hiroshi Yamamoto
  • Patent number: 8034531
    Abstract: The present invention relates to a photosensitive resin composition comprising a) as a component (A) a green colorant of the formula (I) in which the rings A, B, C and D are substituted by hydroxy or by moiety wherein R, is hydrogen or C1,-C4.-Alkyl, R2 is hydrogen or C1,-C4-Alkyl, n is 0, 1, 2 or 3 and the ring E is unsubstituted or substituted by C1,-C6alkyl, C1,-C6alkoxy, hydroxy, NHCOR3, NHSO2, R4 or SO2NHR5, wherein R3, is C1,-C4,-Alkyl or phenyl, R4, is C1,-C4-Alkyl or phenyl and R5 is C1,-C4-Alkyl or phenyl, b) as a component (B) an alkali soluble oligomer or polymer (reactive or unreactive), c) as a component (C) a polymerizable monomer, d) as a component (D) a photoinitiator, e) as a component (E) an epoxy compound, and also, if desired, f) as a component (F) further additives, used as solder resist, etching resist or plating resist in the manufacture of printed circuit boards.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: October 11, 2011
    Assignee: BASF SE
    Inventors: Hidetaka Oka, Jean-Marie Adam
  • Patent number: 8008507
    Abstract: The present invention relates to fluorescent diketopyrrolopyrroles of the formula (I), or (III), a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers, EL lasers and electroluminescent devices. A luminescent device comprising a compound, or composition according to the present invention is high in the efficiency of electrical energy utilization and high in luminance.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: August 30, 2011
    Assignee: BASF SE Ludwigshafen
    Inventors: Hiroshi Yamamoto, Hidetaka Oka, Mathias D├╝ggeli
  • Patent number: 7989644
    Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain dibenzofuran compounds. The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: August 2, 2011
    Assignee: BASF SE
    Inventors: Junichi Tanabe, Hidetaka Oka, Hiroshi Yamamoto
  • Patent number: 7829257
    Abstract: Photosensitive compositions comprising (A) an alkali soluble compound; (B) at least one compound, of formula I or II wherein R1 inter alia is C4-C9cycloalkanoyl, C3-C12alkenoyl, or benzoyl which is unsubstituted or substituted; Ar1 is either C6-C20aryl or C6-C20aryloyl each of which is unsubstituted or substituted; x is 2 or 3; M1 when x is 2, inter alia is a group phenylene or naphthylene, each of which optionally is substituted i.a.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: November 9, 2010
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Hidetaka Oka, Kazuhiko Kunimoto, Hisatoshi Kura, Masaki Ohwa, Junichi Tanabe
  • Patent number: 7759043
    Abstract: Compounds of the formula (I), wherein R1, R2 and R10 independently of one another are C1-C20alkyl, phenyl, C1-C12alkylphenyl or phenyl-C1-C6alkyl; R3 and R4 independently of one another are hydrogen, C1-C20alkyl, NR6R7 or SR8, provided that at least one of R3 or R4 is NR6R7 or SR8; R5 is hydrogen or C1-C20alkyl; R6 and R7 independently of one another are C1-C20alkyl, or R6 and R7 together with the N-atom to which they are attached form a 5 or 6 membered ring, which optionally is interrupted by O, S or NR9 and which optionally additionally is substituted by one or more C1-C4alkyl; R8 is phenyl, biphenylyl, naphthyl, anthryl or phenanthryl, all of which optionally are substituted by one or more C1-C4alkyl; and R9 is hydrogen, C1-C20alkyl, C2-C4hydroxyalkyl or phenyl; exhibit an unexpectedly good performance in photopolymerization reactions.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: July 20, 2010
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Junichi Tanabe, Kazuhiko Kunimoto, Hisatoshi Kura, Hidetaka Oka, Masaki Ohwa
  • Patent number: 7648738
    Abstract: Compounds of the formulae (I), (II), (III) and (IV), wherein Ch1 is e.g. the formula (V) or (VI); Ch2 is the formula (VII) or (VIII); Het1 is for example furyl, thienyl, pyrrolyl, pyridyl, benzothienyl, quinolyl or bithienyl; each of which is optionally substituted; Het2 and Het2? e.g. are furylene, thienylene, pyrrolylene, benzothienylene, quinolylene, furylenecarbonyl, thienylenecarbonyl, benzothienylenecarbonyl or bithienylenecarbonyl; each of which is optionally substituted; A1, and Ar1? i.a. are phenyl, naphthyl, benzoyl or naphthoyl, each of which is optionally substituted; Ar2 is for example phenylene, optionally substituted; M i.a. is C1-C20alkylene; R1 is for example C1-C12alkyl or phenyl; R2 and R2? for example are hydrogen or C1-C20 alkyl; exhibit an unexpectedly good performance in photopolymerization reactions.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: January 19, 2010
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Junichi Tanabe, Hisatoshi Kura, Hidetaka Oka, Masaki Ohwa
  • Patent number: 7556843
    Abstract: A photopolymerization process for producing pigmented and non-pigmented articles comprises irradiating with electromagnetic radiation in the range from 190 to 600 nm, or with electron beam or with X-rays a photosensitive composition which can be developed by alkali solution which composition comprises (A) a polymer containing at least one carboxylic acid group in the molecule and having a molecular weight of 200,000 or less, (B) selected ?-aminoalkylphenone compounds as photoinitiators and (C) an ester of a polyol, wherein the polyol is partially or fully esterified with an ethylenically unsaturated carboxylic acid a monomeric, oligomeric or polymeric compound having at least one olefinic double bond.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: July 7, 2009
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hisatoshi Kura, Hidetaka Oka, Masaki Ohwa
  • Publication number: 20090131673
    Abstract: Disclosed are electroluminescent devices that comprise organic layers that contain dibenzofuran compounds. The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Application
    Filed: May 22, 2006
    Publication date: May 21, 2009
    Inventors: Junichi Tanabe, Hidetaka Oka, Hiroshi Yamamoto
  • Publication number: 20090066231
    Abstract: The present invention relates to electroluminescent devices that comprise organic layers that contain triazole compounds of the formula (I), or formula (II). The compounds are suitable components of, for example, blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in, for example, mobile phones, televisions and personal computer screens.
    Type: Application
    Filed: April 19, 2006
    Publication date: March 12, 2009
    Inventors: Hidetaka Oka, Ramachandra V. Joshi, Junichi Tanabe, Sanjoy Lahiri, Dhaval Vashi, Preetam Ghogale
  • Patent number: 7425585
    Abstract: Photosensitive compositions which can be developed by alkali solution, comprise (A) a polymer containing at least one carboxylic acid group in the molecule and having a molecular weight of 200,000 or less, (B) selected ?-aminoalkylphenone compounds as photoinitiators and (C) an ester of a polyol, wherein the polyol is partially or fully esterified with an ethylenically unsaturated carboxylic acid a monomeric, oligomeric or polymeric compound having at least one olefinic double bond.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: September 16, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Hisatoshi Kura, Hidetaka Oka, Masaki Ohwa
  • Publication number: 20080217581
    Abstract: The present invention relates to fluorescent diketopyrrolopyrroles of the formula (I), or (III), a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coatings, non-impact-printing material, color filters, cosmetics, polymeric ink particles, toners, as fluorescent tracers, in color changing media, in solid dye lasers, EL lasers and electroluminescent devices. A luminescent device comprising a compound, or composition according to the present invention is high in the efficiency of electrical energy utilisation and high in luminance.
    Type: Application
    Filed: November 30, 2005
    Publication date: September 11, 2008
    Inventors: Hiroshi Yamamoto, Hidetaka Oka, Mathias Duggeli
  • Patent number: 7381842
    Abstract: Compounds of the formulae I, II, III, IV and V wherein R1 i.a. is C4-C9cycloalkanoyl, C1-C12alkanoyl, C4-C6alkenoyl, or benzoyl; R2 is for example phenyl, C1-C20alkyl, C3-C8cycloalkyl, C2-C20alkanoyl, or benzoyl; Ar1 is R4S-phenyl or NR5R6-phenyl, each of which optionally is substituted; or Ar1 i.a. is optionally substituted; or Ar1 is naphthyl or anthracyl each of which is unsubstituted or substituted; or Ar1 is benzoyl, naphthalenecarbonyl, phenanthrenecarbonyl, anthracenecarbonyl or pyrenecarbonyl, each of which is unsubstituted or substituted, or Ar1 is 3,4,5-trimethoxyphenyl, phenoxyphenyl or biphenyl; Ar2 i.a.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: June 3, 2008
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Kazuhiko Kunimoto, Hidetaka Oka, Masaki Ohwa, Junichi Tanabe, Hisatoshi Kura, Jean-Luc Birbaum
  • Publication number: 20080096115
    Abstract: Compounds of the formula (I), wherein R1, R2 and R10 independently of one another are C1-C20alkyl, phenyl, C1-C12alkylphenyl or phenyl-C1-C6alkyl; R3 and R4 independently of one another are hydrogen, C1-C20alkyl, NR6R7 or SR8, provided that at least one of R3 or R4 is NR6R7 or SR8; R5 is hydrogen or C1-C20alkyl; R6 and R7 independently of one another are C1-C20alkyl, or R6 and R7 together with the N-atom to which they are attached form a 5 or 6 membered ring, which optionally is interrupted by O, S or NR9 and which optionally additionally is substituted by one or more C1-C4alkyl; R8 is phenyl, biphenylyl, naphthyl, anthryl or phenanthryl, all of which optionally are substituted by one or more C1-C4alkyl; and R9 is hydrogen, C1-C20alkyl, C2-C4hydroxyalkyl or phenyl; exhibit an unexpectedly good performance in photopolymerization reactions.
    Type: Application
    Filed: August 8, 2005
    Publication date: April 24, 2008
    Inventors: Junichi Tanabe, Kazuhiko Kunimoto, Hisatoshi Kura, Hidetaka Oka, Masaki Ohwa
  • Publication number: 20070259278
    Abstract: A photopolymerization process for producing pigmented and non-pigmented articles comprises irradiating with electromagnetic radiation in the range from 190 to 600 nm, or with electron beam or with X-rays a photosensitive composition which can be developed by alkali solution which composition comprises (A) a polymer containing at least one carboxylic acid group in the molecule and having a molecular weight of 200'000 or less, (B) selected ?-aminoalkylphenone compounds as photoinitiators and (C) an ester of a polyol, wherein the polyol is partially or fully esterified with an ethylenically unsaturated carboxylic acid a monomeric, oligomeric or polymeric compound having at least one olefinic double bond.
    Type: Application
    Filed: June 13, 2007
    Publication date: November 8, 2007
    Inventors: Hisatoshi Kura, Hidetaka Oka, Masaki Ohwa
  • Publication number: 20070249748
    Abstract: Photosensitive compositions which can be developed by alkali solution, comprise (A) a polymer containing at least one carboxylic acid group in the molecule and having a molecular weight of 200,000 or less, (B) selected ?-aminoalkylphenone compounds as photoinitiators and (C) an ester of a polyol, wherein the polyol is partially or fully esterified with an ethylenically unsaturated carboxylic acid a monomeric, oligomeric or polymeric compound having at least one olefinic double bond.
    Type: Application
    Filed: June 13, 2007
    Publication date: October 25, 2007
    Inventors: Hisatoshi Kura, Hidetaka Oka, Masaki Ohwa