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).

  • Publication number: 20140311380
    Abstract: A photopolymerizable composition includes diethyleneglycoldimethacrylate and alkoxy-modified (meth)acrylic acid ester having an n not less than 9. The n is an average polymerization degree of an alkoxy part of the (meth)acrylic acid ester.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 23, 2014
    Inventor: Takao HIRAOKA
  • Publication number: 20140240414
    Abstract: To provide a photopolymerizable inkjet ink, which contains photopolymerizable monomers containing at least one selected from the following compound group (A) compounds of which are negative for skin sensitization, and at least one selected from the following compound group (B) compounds of which are negative for skin sensitization, wherein the compound group (A) is a compound group consisting of caprolactone-modified dipentaerythritol hexaacrylate, polyethoxylated tetramethylol methane tetraacrylate, ethylene oxide-modified bisphenol A diacrylate, caprolactone-modified hydroxy pivalic acid neopentyl glycol diacrylate, polypropylene glycol diacrylate [CH2?CH—CO—(OC3H6)n-OCOCH?CH2 (n?12)], hydroxyethyl acryl amide, trimethylol propane trimethacrylate, and tricyclodecane dimethanol dimethacrylate, and the compound group (B) is a compound group consisting of ethylene oxide-modified phenolacrylate, isostearyl acrylate, ethylene oxide-modified trimethylol propane trimethacrylate, stearyl methacrylate, and glycerin
    Type: Application
    Filed: October 30, 2012
    Publication date: August 28, 2014
    Inventor: Takao Hiraoka
  • Patent number: 8815140
    Abstract: To provide a method of producing a film, comprising: ejecting a liquid B over a liquid surface of an active energy ray-curable liquid as a liquid A by an inkjet process, according to a predetermined periodic signal; and subsequently applying an active energy ray to the liquid A and the liquid B so as to perform curing and obtain a film which comprises a pattern according to any one of (1) to (4) below, (1) a smooth pattern having a periodic amplitude based upon a trigonometric function, (2) a pattern having a periodic depression, (3) a pattern in the form of a periodic flat surface, and (4) a pattern having a periodic semicylindrical shape.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: August 26, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tamotsu Aruga, Shinya Seno, Masayuki Koyano, Eiji Noda, Noriyasu Takeuchi, Tsutomu Maekawa, Takao Hiraoka, Tomoko Hasegawa, Okitoshi Kimura, Soh Noguchi
  • Publication number: 20140171886
    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: Application
    Filed: December 19, 2012
    Publication date: June 19, 2014
    Applicant: SENJU USA, INC.
    Inventors: Takahiro Ogawa, Akiharu Isowaki, Koji Kawahara, Takao Hiraoka, Mariko Tanaka, Chihiro Kenmochi
  • Patent number: 8740374
    Abstract: An ink jet recording method including: applying at least two energy beam curable liquids different from each other in surface tension on a recording medium to form an energy beam curable liquid layer having a distribution pattern of different surface tensions; ejecting an energy beam curable ink on the energy beam curable liquid layer formed on the recording medium; and irradiating the energy beam curable liquid layer and the energy beam curable ink with energy beams to cure the energy beam curable liquid layer and the energy beam curable ink to form an image.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: June 3, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Shin-ya Seno, Tamotsu Aruga, Masayuki Koyano, Eiji Noda, Norlyasu Takeuchi, Okitoshi Kimura, Tsutomu Maekawa, Takao Hiraoka, Soh Noguchi, Tomoko Hasegawa
  • Publication number: 20140139597
    Abstract: A polymerizable ink composition contains polymerizable monomers containing at least one of an acrylic acid ester compound, a methacrylic acid ester compound, an acryl amide, and a methacryl amide; and a vinyl ether compound; and one of potassium oxide and sodium oxide.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 22, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventor: Takao Hiraoka
  • Publication number: 20140139596
    Abstract: An improved polymerizable ink composition contains polymerizable monomers containing one or both of an acrylic acid ester compound and a methacrylic acid ester compound and a vinyl ether compound; an alkali component; and an aromatic secondary amine compound.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 22, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventor: Takao Hiraoka
  • Patent number: 8727522
    Abstract: An ultraviolet crosslinking ink including a radically polymerizable and anionically polymerizable monomer; a photoradical generator; and a photo-base generator. An inkjet recording method including ejecting an ultraviolet crosslinking ink including a radically polymerizable and anionically polymerizable monomer; a photoradical generator; a photo-base generator; and a colorant, toward a surface of a recording material to form an ink image, and irradiating the ink image with ultraviolet light using a light emitting diode.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: May 20, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsutomu Maekawa, Okitoshi Kimura, Eiji Noda, Tamotsu Aruga, Shinya Seno, Noriyasu Takeuchi, Masayuki Koyano, Takao Hiraoka, Tomoko Hasegawa, Soh Noguchi
  • Publication number: 20140125744
    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 10, 2012
    Publication date: May 8, 2014
    Inventor: Takao Hiraoka
  • Patent number: 8708475
    Abstract: An ultraviolet crosslinking inkjet ink including a radically polymerizable monomer including a methacrylate and no acrylate; and a photoradical generator. An ink cartridge including the ultraviolet crosslinking inkjet ink and a container containing the ultraviolet crosslinking inkjet ink therein. An image forming method including ejecting droplets of the ultraviolet crosslinking inkjet ink toward a recording material to form an image on the recording material; and irradiating the image with ultraviolet light to crosslink the image. An image forming apparatus including a recording device to eject droplets of the ultraviolet crosslinking inkjet ink toward a recording material to form an image on the recording material; and an ultraviolet irradiator to irradiate the image with ultraviolet light to crosslink the image.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: April 29, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoko Hasegawa, Tamotsu Aruga, Okitoshi Kimura, Eiji Noda, Shinya Seno, Noriyasu Takeuchi, Masayuki Koyano, Soh Noguchi, Takao Hiraoka, Tsutomu Maekawa
  • Patent number: 8696101
    Abstract: A photopolymerizable inkjet black ink having a viscosity not greater than 20 mPa·s at 60° C., including a clear ink having a viscosity not greater than 15 mPa·s at 60° C. including a photopolymerizable monomer having a Stimulation Index (SI value) less than 3 when subjected to a skin sensitization test (LLNA method) and a polymerization initiator without including carbon black and insolubles; and a carbon black in an amount not greater than 7% by weight.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: April 15, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Takao Hiraoka, Tomoko Hasegawa, Tsutomu Maekawa
  • Patent number: 8632174
    Abstract: A method of ink jet recording including forming an uncured first ink layer of a first ultraviolet curable ink A on a recording medium, forming an uncured second ink layer having a recording pattern inside the uncured first ink layer of the ink A by discharging a second ultraviolet curable ink B from an ink jet head, and curing the uncured first ink layer by irradiating the uncured first ink layer with ultraviolet light after forming the uncured second ink layer, wherein the ink A contains a photoradical generator and the ink B contains a photobase generator and a coloring agent.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 21, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Soh Noguchi, Okitoshi Kimura, Tsutomu Maekawa, Takao Hiraoka, Tomoko Hasegawa, Eiji Noda, Shinya Seno, Noriyasu Takeuchi, Tamotsu Aruga, Masayuki Koyano
  • Publication number: 20130321539
    Abstract: To provide a photopolymerizable inkjet ink, which contains monomer components, and a polymer or a copolymer of styrene, styrene derivative, acrylic acid ester, or acrylic acid, or any combination thereof, wherein the monomer components contain: t-butyl methacrylate, n-pentyl methacrylate, or n-hexyl methacrylate, or any combination thereof; and glycerol dimethacrylate, and wherein the photopolymerizable inkjet ink is free from a diluting solvent.
    Type: Application
    Filed: May 23, 2013
    Publication date: December 5, 2013
    Inventor: Takao HIRAOKA
  • Publication number: 20130220846
    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 hydroxy group, and neither the rivastigmine-containing layer nor the pressure-sensitive adhesive layer contains an anti-oxidizing agent.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 29, 2013
    Applicant: NICHIBAN CO., LTD.
    Inventors: Takao Hiraoka, Shuta Nakanami, Toru Koga
  • Publication number: 20130065024
    Abstract: To provide a method of producing a film, comprising: ejecting a liquid B over a liquid surface of an active energy ray-curable liquid as a liquid A by an inkjet process, according to a predetermined periodic signal; and subsequently applying an active energy ray to the liquid A and the liquid B so as to perform curing and obtain a film which comprises a pattern according to any one of (1) to (4) below, (1) a smooth pattern having a periodic amplitude based upon a trigonometric function, (2) a pattern having a periodic depression, (3) a pattern in the form of a periodic flat surface, and (4) a pattern having a periodic semicylindrical shape.
    Type: Application
    Filed: April 8, 2011
    Publication date: March 14, 2013
    Inventors: Tamotsu Aruga, Shinya Seno, Masayuki Koyano, Eiji Noda, Noriyasu Takeuchi, Tsutomu Maekawa, Takao Hiraoka, Tomoko Hasegawa, Okitoshi Kimura, Soh Noguchi
  • Publication number: 20120293589
    Abstract: An optically polymerizable inkjet ink including an optically polymerizable monomer having a Stimulation Index (SI) of less than 3 in a skin sensitization test as measured by Local Lymph Node Assay (LLNA), a molecule cleavage type optical polymerization initiator, a hydrogen-extracting type optical polymerization initiator, and an amine compound serving as a polymerization accelerator.
    Type: Application
    Filed: April 10, 2012
    Publication date: November 22, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventor: Takao HIRAOKA
  • Publication number: 20120242768
    Abstract: An ink jet recording method including: applying at least two energy beam curable liquids different from each other in surface tension on a recording medium to form an energy beam curable liquid layer having a distribution pattern of different surface tensions; ejecting an energy beam curable ink on the energy beam curable liquid layer formed on the recording medium; and irradiating the energy beam curable liquid layer and the energy beam curable ink with energy beams to cure the energy beam curable liquid layer and the energy beam curable ink to form an image.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 27, 2012
    Inventors: Shin-ya SENO, Tamotsu Aruga, Masayuki Koyano, Eiji Noda, Noriyasu Takeuchi, Okitoshi Kimura, Tsutomu Maekawa, Takao Hiraoka, Soh Noguchi, Tomoko Hasegawa
  • Publication number: 20120200648
    Abstract: A photopolymerizable inkjet black ink having a viscosity not greater than 20 mPa·s at 60° C., including a clear ink having a viscosity not greater than 15 mPa·s at 60° C. including a photopolymerizable monomer having a Stimulation Index (SI value) less than 3 when subjected to a skin sensitization test (LLNA method) and a polymerization initiator without including carbon black and insolubles; and a carbon black in an amount not greater than 7% by weight.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 9, 2012
    Inventors: Takao HIRAOKA, Tomoko HASEGAWA, Tsutomu MAEKAWA
  • Publication number: 20120176456
    Abstract: An ultraviolet crosslinking ink including a radically polymerizable and anionically polymerizable monomer; a photoradical generator; and a photo-base generator. An inkjet recording method including ejecting an ultraviolet crosslinking ink including a radically polymerizable and anionically polymerizable monomer; a photoradical generator; a photo-base generator; and a colorant, toward a surface of a recording material to form an ink image, and irradiating the ink image with ultraviolet light using a light emitting diode.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 12, 2012
    Applicant: RICOH COMPANY, LTD.,
    Inventors: Tsutomu MAEKAWA, Okitoshi KIMURA, Eiji NODA, Tamotsu ARUGA, Shinya SENO, Noriyasu TAKEUCHI, Masayuki KOYANO, Takao HIRAOKA, Tomoko HASEGAWA, Soh NOGUCHI
  • Publication number: 20120147103
    Abstract: An ultraviolet crosslinking inkjet ink including a radically polymerizable monomer including a methacrylate and no acrylate; and a photoradical generator. An ink cartridge including the ultraviolet crosslinking inkjet ink and a container containing the ultraviolet crosslinking inkjet ink therein. An image forming method including ejecting droplets of the ultraviolet crosslinking inkjet ink toward a recording material to form an image on the recording material; and irradiating the image with ultraviolet light to crosslink the image. An image forming apparatus including a recording device to eject droplets of the ultraviolet crosslinking inkjet ink toward a recording material to form an image on the recording material; and an ultraviolet irradiator to irradiate the image with ultraviolet light to crosslink the image.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 14, 2012
    Inventors: Tomoko HASEGAWA, Tamotsu Aruga, Okitoshi Kimura, Eiji Noda, Shinya Seno, Noriyasu Takeuchi, Masayuki Koyano, Soh Noguchi, Takao Hiraoka, Tsutomu Maekawa