Patents by Inventor Hirotsugu Yasuda

Hirotsugu Yasuda 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: 20180169292
    Abstract: Provided are a silicone wound dressing, a method of manufacturing thereof and a method of using thereof. The silicone wound dressing has a silicone dressing base material and an amorphous carbon coating formed on the silicone dressing base material. The amorphous carbon coating is formed by subjecting the silicone dressing base material to a plasma polymerization in a plasma device under an atmosphere of a mixed gas comprising a hydrocarbon gas and an oxygen-containing gas. The silicone wound dressing has excellent oxygen permeability and is less likely to adhere to the wound. The speedy recovery of the wound is promoted by covering the wound with the silicone wound dressing.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 21, 2018
    Inventors: Hirotsugu Yasuda, Werner Akira Yasuda
  • Publication number: 20100003420
    Abstract: A dispenser for dispensing a medicament that includes a canister for housing the medicament and a fluid propellant therefor and a drug-dispensing valve wherein one or more of the internal surfaces of the canister and/or valve includes a fluorinated coating prepared from plasma polymerisation of one or more fluorinated monomers selected from the group consisting of CH2FCF3 and C3F6 is disclosed.
    Type: Application
    Filed: September 8, 2009
    Publication date: January 7, 2010
    Applicant: GLAXO GROUP LIMITED
    Inventors: Cecile Isabelle Bonvoisin, Ignatius Loy Britto, Ralf Greger, Christophe Laroche, Verna Charlene Lo, Johan Palmers, Isabelle Denise Peyron, Anthony Vanlandeghem, Hirotsugu Yasuda
  • Publication number: 20050201945
    Abstract: A dispenser for dispensing a medicament that includes a canister for housing the medicament and a fluid propellant therefor and a drug-dispensing valve wherein one or more of the internal surfaces of the canister and/or valve includes a fluorinated coating prepared from plasma polymerisation of one or more fluorinated monomers selected from the group consisting of CH2FCF3 and C3F6 is disclosed.
    Type: Application
    Filed: October 23, 2002
    Publication date: September 15, 2005
    Inventors: Cecile Bonvoisin, Ignatius Britto, Ralf Greger, Christophe Laroche, Verna Lo, Johan Palmers, Isabelle Denise Peyron, Anthony Vanlandeghem, Hirotsugu Yasuda
  • Publication number: 20050143685
    Abstract: A medicament dispenser comprising a canister and a drug dispensing valve, wherein one or more surfaces of said canister and/or valve has a fluorinated coating provided by a process comprising generating one or more fluorine-containing radical species and polymerising said radicals on said one or more surfaces, provided that the radicals are not generated by a process involving continuous wave radio frequency plasma polymerisation is disclosed.
    Type: Application
    Filed: September 19, 2002
    Publication date: June 30, 2005
    Inventors: Isabelle Peyron, Hirotsugu Yasuda
  • Patent number: 5312529
    Abstract: This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of metals. The plasma process involves pretreatment of the surface of the metal with a gas plasma to remove oxygen, followed by plasma deposition of a thin polymeric film on the treated surface, followed by cathodic electrocoat application of a primer.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: May 17, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph A. Antonelli, Tyau-Jeen Lin, Duck J. Yang, Hirotsugu Yasuda
  • Patent number: 5270082
    Abstract: A process of organic vapor deposition for significantly improved corrosion protection of metal. The process involves deposition of a thin film by polymerization of certain precursors onto the surface of a metal phosphate treated metal substrate (15). A primer or topcoat is subseqently applied over the metal substrate.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: December 14, 1993
    Inventors: Tyau-Jeen Lin, Joseph A. Antonelli, Duck J. Yang, Hirotsugu Yasuda
  • Patent number: 5267390
    Abstract: A process for improved corrosion protection of a metal substrates involving organic vapor deposition of a thin film by polymerization of certain precursors onto one side of the phosphated flat metal substrate (15). Following stamping and assembly of the metal substrate, a primer and topcoat may be applied over the other side of the metal substrate. The process is particularly applicable to coil steel employed in the original manufacture of automobiles, trucks, and parts thereof.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: December 7, 1993
    Inventors: Duck J. Yang, Joseph A. Antonelli, Melville J. Camelon, Tyau-Jeen Lin, Hirotsugu Yasuda
  • Patent number: 5182000
    Abstract: This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of metals. The plasma process involves pretreatment of the surface of the metal with a gas plasma comprising argon, hydrogen, or mixtures thereof, followed by plasma deposition of a thin polymeric film on the treated surface, followed by cathodic electrocoat application of a primer.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: January 26, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph A. Antonelli, Tyau-Jeen Lin, Duck J. Yang, Hirotsugu Yasuda
  • Patent number: 4981713
    Abstract: This invention relates to the use of plasma technology for coating thin polymer films on steel. The process utilizes DC power, system pressures of 0.01-1.0 torr, the steel substrate is made the cathode, and the anodes are equipped with magnetic enhancement. The result is a uniform, pin-hole free, dense organic coating. Furthermore, there is minimal deposition of the organic film on the anodes or interior of the chamber.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: January 1, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Hirotsugu Yasuda, Duck J. Yang
  • Patent number: 4980196
    Abstract: This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of steel. The plasma process involves pretreating of the steel surfaces by oxygen plasma and thin film deposition by polymerization of certain precursors on the steel. The process utilizes DC power, substrates as the cathode, magentron anodes, and system pressures of 0.01-0.5 torr. After the thin film plasma deposition it is also preferably to put a primer coating over the thin film.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: December 25, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Hirotsugu Yasuda, Tyau-Jeen Lin, Duck J. Yang, Joseph A. Antonelli
  • Patent number: 4749457
    Abstract: A method of precipitating colloidal materials from aqueous systems and a dynamic bimetallic galvanic cell is disclosed, said cell including a metallic electrode which provides a source of flocculating agent and an inert electrode to which the metallic electrode is short circuited. When water containing colloidal particles is passed through the galvanic cell and the electrodes are short circuited, the metallic electrode provides a source of flocculating agent which coprecipitates with the colloidal particles, forming a sediment which can be readily removed. The cell is constructed to maximize the contact between the water and the electrode surfaces and to maintain the metallic electrode short circuited against the inert electrode as the metallic electrode is consumed.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: June 7, 1988
    Assignee: The Curators of the University of Missouri
    Inventors: Hirotsugu Yasuda, Stig E. Friberg
  • Patent number: 4503133
    Abstract: Galvanic cells having at least a portion of their sealing surfaces and/or corrodible members coated with a sputtered or plasma polymerization deposited layer of polymeric material no more than 2000 angstroms thick demonstrate increased resistance to electrolyte leakage and/or increased resistance to corrosion.
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: March 5, 1985
    Assignee: Union Carbide Corporation
    Inventors: Johannes A. van Lier, Hirotsugu Yasuda
  • Patent number: 4501805
    Abstract: Galvanic cells employing compressible gaskets having at least a portion of the sealing areas of such gaskets coated with plasma deposited fluorine atoms demonstrate increased resistance to electrolyte leakage.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: February 26, 1985
    Assignee: Union Carbide Corporation
    Inventors: Hirotsugu Yasuda, Johannes A. van Lier
  • Patent number: 4312575
    Abstract: A soft corneal contact lens comprising a soft, highly oxygen-permeable, polymeric lens having formed on the surface thereof an ultrathin, optically clear, impermeable barrier coating. The barrier coating is tightly cross-linked and comprises the reaction product resulting from an electrical glow discharge polymerization process conducted in a gaseous atmosphere and will prevent diffusion into the lens of lipids and other large molecules from the eye's tear film. The lens is formed from silicone or polyurethane. The gaseous atmosphere consists essentially of compounds selected from the group consisting of hydrocarbons; halogenated hydrocarbons; halogenated hydrocarbons and hydrogen; hydrocarbons and a halogen; and a mixture of any two or more of these compounds. The surface of the fully formed lens is highly hydrophilic which is accomplished during the polymerization process or in an additional step comprising glow discharge in the presence of oxygen or argon.
    Type: Grant
    Filed: September 18, 1979
    Date of Patent: January 26, 1982
    Inventors: Gholam A. Peyman, Jeffrey E. Koziol, Hirotsugu Yasuda
  • Patent number: 4137550
    Abstract: This invention relates to a video disc with a thin polymeric dielectric layer formed from acetylene and nitrogen in a glow discharge. The dielectric layer has improved age deterioration resistance and wear characteristics and can be prepared with low power levels.
    Type: Grant
    Filed: November 18, 1977
    Date of Patent: January 30, 1979
    Assignee: RCA Corporation
    Inventors: Grzegorz Kaganowicz, John W. Robinson, Hirotsugu Yasuda
  • Patent number: 4032440
    Abstract: A semipermeable composite membrane is prepared by glow discharge polymerization of a combination of an organic monomer and an inorganic monomer in the presence of a porous support, the polymerization resulting in deposition of a thin film of copolymer on the surface of the support.
    Type: Grant
    Filed: November 18, 1975
    Date of Patent: June 28, 1977
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventor: Hirotsugu Yasuda