Patents by Inventor Takao Hiraoka

Takao Hiraoka 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: 9428657
    Abstract: A radical polymerizable composition includes a siloxane compound represented by a formula (HO)2(R)Si.O[—Si(R)(OH).O-]n-Si(R)(OH)2 in which R represents a methacryloyl group; and n represents 0 or 1; and a monomer having a viscosity lower than that of the siloxane compound.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: August 30, 2016
    Assignee: Ricoh Company, Ltd.
    Inventor: Takao Hiraoka
  • Patent number: 9428665
    Abstract: A photopolymerizable inkjet ink including: at least one selected from the group consisting of (meth)acrylic acid esters negative for skin sensitization and (meth)acrylamides negative for skin sensitization; and at least one selected from the group consisting of vinyl ethers negative for skin sensitization, t-butyl methacrylate negative for skin sensitization, n-pentyl methacrylate negative for skin sensitization, and n-hexyl methacrylate negative for skin sensitization.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: August 30, 2016
    Assignee: Ricoh Company, Ltd.
    Inventor: Takao Hiraoka
  • Patent number: 9399717
    Abstract: To provide a photopolymerizable composition, which includes photopolymerizable monomers containing glycerol dimethacrylate, caprolactone-modified dipentaerythritol hexaacrylate, and diethylene glycol dimethacrylate, wherein an amount of the glycerol dimethacrylate in the photopolymerizable monomers is 25% by mass or greater.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: July 26, 2016
    Assignee: Ricoh Company, Ltd.
    Inventor: Takao Hiraoka
  • Patent number: 9303173
    Abstract: An active energy ray-curable ink which contains: polymerizable compounds containing a monofunctional polymerizable monomer a homopolymer of which has Tg of 90° C. or higher, wherein a cured product obtained by forming a coating film having an average thickness of 10 ?m on a polycarbonate substrate using the ink, and 15 seconds later, and applying active energy rays having a light quantity of 1,500 mJ/cm2 to the coating film to cure satisfies the following (1) and (2): (1) a stretchability of the cured product represented by the following equation is 2 or greater, when the cured product is stretched by a tensile tester at a tensile speed of 20 mm/min, and temperature of 180° C., and Stretchability=(length after tensile test)/(length before tensile test) (2) adhesion between the substrate and the cured product as measured by a cross-cut test in accordance with JIS K5400 is 70 or greater.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: April 5, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Mie Yoshino, Takao Hiraoka, Shizuka Kohzuki
  • Patent number: 9238012
    Abstract: A transdermal patch for the treatment of Alzheimer's disease includes: a backing, a rivastigmine-containing layer, a pressure-sensitive adhesive layer, and a release liner. In the transdermal patch, the rivastigmine-containing layer contains rivastigmine and an alkyl(meth)acrylate resin, the pressure-sensitive adhesive layer is composed of an acrylic pressure-sensitive adhesive containing a (meth)acrylic acid ester having a hydroxyl group, and neither the rivastigmine-containing layer nor the pressure-sensitive adhesive layer contains an anti-oxidizing agent.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: January 19, 2016
    Assignee: NICHIBAN CO., LTD.
    Inventors: Takao Hiraoka, Shuta Nakanami, Toru Koga
  • Publication number: 20160009931
    Abstract: Provided is an active energy ray-curable inkjet ink containing at least photopolymerizable compounds. The photopolymerizable compounds include: at least one monofunctional monomer selected from the group consisting of a monofunctional monomer of which homopolymer has a glass transition temperature of 90° C. or higher, a monofunctional monomer having a ring structure, and a monofunctional monomer of which homopolymer has a glass transition temperature of 90° C. or higher and that has a ring structure; and urethane (meth)acrylate.
    Type: Application
    Filed: September 18, 2015
    Publication date: January 14, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Shizuka KOHZUKI, Mie YOSHINO, Takao HIRAOKA
  • Patent number: 9211397
    Abstract: A patch for treatment of eyelid diseases that is provided with a support, a pressure-sensitive adhesive layer, and a release layer in this order, wherein (a) the pressure-sensitive adhesive layer includes the following (a-1) to (a-4): (a-1) a styrene-isoprene-styrene block copolymer, a tackifier resin, and a softening agent are contained; (a-2) a ratio (mass ratio) of the styrene-isoprene-styrene block copolymer and the tackifier resin is 1:2 to 1:4; (a-3) a content of the softening agent is 40% to 60% by mass; and (a-4) further 0.005% to 5% by mass of clobetasol or acid ester thereof is contained; and (b) the support has elastic modulus with a Young's modulus of 0.01 to 0.5 GPa: and a method for producing the patch for treatment of eyelid diseases including: forming a pressure-sensitive adhesive layer on a upper surface of a release layer.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: December 15, 2015
    Assignee: SENJU USA, INC.
    Inventors: Takahiro Ogawa, Akiharu Isowaki, Koji Kawahara, Takao Hiraoka, Mariko Tanaka, Chihiro Kenmochi
  • Publication number: 20150329729
    Abstract: A radical polymerizable composition includes a siloxane compound represented by a formula (HO)2(R)Si.O[—Si(R)(OH).O-]n-Si(R)(OH)2 in which R represents a methacryloyl group; and n represents 0 or 1; and a monomer having a viscosity lower than that of the siloxane compound.
    Type: Application
    Filed: May 4, 2015
    Publication date: November 19, 2015
    Inventor: Takao HIRAOKA
  • Patent number: 9187658
    Abstract: To provide a photopolymerizable inkjet ink including: diethylene glycol dimethacrylate; caprolactone-modified dipentaerythritol hexaacrylate; and a photopolymerization initiator represented by the following general formula (1): where X1 is represented by the following general formula (1-1), and X2 is represented by the following general formula (1-2): where R1 to R4 are each independently a C1-C6 alkyl group, and R1 and R2 may be linked to form a ring, and R3 and R4 may be linked to form a ring; Z1 and Z2 is —NR5R6 or OR7; R5 and R6 are each independently a C1-C6 alkyl group, and R5 and R6 may be linked to form a ring; and R7 is a hydrogen atom, a methyl group, or a trimethylsilyl group.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: November 17, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Shizuka Kohzuki, Takao Hiraoka
  • Publication number: 20150320606
    Abstract: Provided is a facial patch including a support, a pressure-sensitive adhesive layer, and a release layer in this order, in which (a) the pressure-sensitive adhesive layer satisfies the following conditions (a-1) to (a-3): (a-1) the pressure-sensitive adhesive layer contains a styrene-isoprene-styrene block copolymer, a tackifier resin, and a softening agent; (a-2) the ratio (mass ratio) of the styrene-isoprene-styrene block copolymer and the tackifier resin is 1:2 to 1:4; and (a-3) the content of the softening agent is 40% to 60% by mass; and (b) the support has elastic moduli with a Young's modulus of 0.01 GPa to 0.5 GPa, and also provided is a method for producing the facial patch, the method including a step of forming a pressure-sensitive adhesive layer on the upper surface of the release layer.
    Type: Application
    Filed: December 19, 2012
    Publication date: November 12, 2015
    Inventors: Koji KAWAHARA, Takao HIRAOKA, Mariko TANAKA, Chihiro KENMOCHI
  • Patent number: 9169408
    Abstract: Provided is an active energy ray-curable inkjet ink containing at least photopolymerizable compounds. The photopolymerizable compounds include: at least one monofunctional monomer selected from the group consisting of a monofunctional monomer of which homopolymer has a glass transition temperature of 90° C. or higher, a monofunctional monomer having a ring structure, and a monofunctional monomer of which homopolymer has a glass transition temperature of 90° C. or higher and that has a ring structure; and urethane (meth)acrylate.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: October 27, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Shizuka Kohzuki, Mie Yoshino, Takao Hiraoka
  • Patent number: 9150743
    Abstract: A photopolymerizable composition includes diethyleneglycol dimethacrylate and methacrylic acid ester having a phosphoric group.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 6, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Takao Hiraoka
  • Publication number: 20150259554
    Abstract: To provide a non-aqueous photopolymerizable composition, which contains: a (meth)acrylic acid ester compound containing at least diethylene glycol dimethacrylate; a photoradical polymerization initiator, which is at least one selected from the group consisting of 1-hydroxy-cyclohexyl-phenyl-ketone, 2-hydroxy-2-methyl-1-phenyl-propan-1-one, and 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)benzyl]phenyl}-2-methyl-1-propan-1-one; and a triazine compound, wherein an amount of the photoradical polymerization initiator is 10 parts by mass or greater relative to 100 parts by mass of the (meth)acrylic acid ester compound.
    Type: Application
    Filed: September 12, 2013
    Publication date: September 17, 2015
    Inventor: Takao HIRAOKA
  • Patent number: 9120940
    Abstract: A photopolymerizable composition includes diethyleneglycol dimethacrylate, 1-hydroxy-cyclohexyl-phenyl-ketone, 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)benzyl]phenyl}-2-methyl-1-propane-1-one and 2-[2-hydroxy-4-(1-octyloxycarbonylethoxy)phenyl]-4,6-bis(4-phenyl)-4,6-bis)4-phenylphenyl-1,3,5-triazine.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: September 1, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Takao Hiraoka
  • Patent number: 9120946
    Abstract: An active energy ray curing type composition contains (meth)acrylic acid ester; and polyether-modified polysiloxane, wherein (meth)acrylic acid ester comprises diethylene glycol dimethacrylate and alkoxy-modified (meth)acrylic acid ester.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: September 1, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shinya Seno, Takao Hiraoka
  • Publication number: 20150232677
    Abstract: A photopolymerizable inkjet ink including: a photopolymerizable monomer having a Stimulation Index (SI value) of less than 3, where the Stimulation Index indicates the extent of sensitization as measured by a skin sensitization test based on Local Lymph Node Assay; and a phenol aromatic compound having two hydroxyl groups in the molecule thereof.
    Type: Application
    Filed: May 4, 2015
    Publication date: August 20, 2015
    Inventor: Takao HIRAOKA
  • Publication number: 20150232676
    Abstract: To provide a non-aqueous photopolymerizable composition, which contains: a polymerizable monomer; a polymerization initiator; and a polyether-modified polysiloxane compound represented by the following general formula (1): <General Formula (1)> (CH3)3Si—O—[Si(CH3)2—O]a—[Si(CH3)(X)—O]b—Si(CH3)3 where X represents R(C2H4O)c(C3H6O)d—R?, R is a single bond or an alkylene group, R? is a hydrogen atom or an alkyl group, and a to d each denote an average polymerization degree including a case where either c or d is 0.
    Type: Application
    Filed: September 27, 2013
    Publication date: August 20, 2015
    Inventor: Takao HIRAOKA
  • Publication number: 20150232675
    Abstract: An active energy ray-curable ink which contains: polymerizable compounds containing a monofunctional polymerizable monomer a homopolymer of which has Tg of 90° C. or higher, wherein a cured product obtained by forming a coating film having an average thickness of 10 ?m on a polycarbonate substrate using the ink, and 15 seconds later, and applying active energy rays having a light quantity of 1,500 mJ/cm2 to the coating film to cure satisfies the following (1) and (2): (1) a stretchability of the cured product represented by the following equation is 2 or greater, when the cured product is stretched by a tensile tester at a tensile speed of 20 mm/min, and temperature of 180° C., and Stretchability=(length after tensile test)/(length before tensile test) (2) adhesion between the substrate and the cured product as measured by a cross-cut test in accordance with JIS K5400 is 70 or greater.
    Type: Application
    Filed: May 5, 2015
    Publication date: August 20, 2015
    Inventors: Mie YOSHINO, Takao HIRAOKA, Shizuka KOHZUKI
  • Patent number: D740952
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: October 13, 2015
    Assignees: NICHIBAN CO., LTD., SENJU USA, INC.
    Inventors: Koji Kawahara, Takao Hiraoka, Chihiro Kenmochi, Mariko Tanaka, Takahiro Ogawa
  • Patent number: D741498
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: October 20, 2015
    Assignees: NICHIBAN CO., LTD., SENJU USA, INC.
    Inventors: Koji Kawahara, Takao Hiraoka, Chihiro Kenmochi, Takahiro Ogawa