Patents by Inventor Hiromasa Okubo

Hiromasa Okubo 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: 7435770
    Abstract: The present invention provides a polymeric-type antistatic agent containing a polymer composition consisting of a polymeric-type antistatic agent containing a resin or/and an elastomer as a main component thereof; or/and a thermoplastic resin having a polar group or/and an elastomer having the polar group. At least one kind of an anion-containing salt, having a fluoro group and a sulfonyl group, is added to the polymer composition without intermediary of a medium consisting of a low-molecular-weight polyether-containing compound or a low-molecular-weight polar compound whose number-average molecular weight is not more than 5000. The present invention also provides a composition, for a conductive roller or the like, containing polymer components and the polymeric-type antistatic agent dispersed in the polymer components.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: October 14, 2008
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Takayuki Hattori, Katsumi Terakawa, Tetsuo Mizoguchi, Kenichi Uesaka, Toshiaki Sakaki, Hiromasa Okubo, Noriaki Fujihana, Yoshiharu Tatsukami
  • Patent number: 7226965
    Abstract: The present invention provides a polymeric-type antistatic agent containing a polymer composition consisting of a polymeric-type antistatic agent containing a resin or/and an elastomer as a main component thereof; or/and a thermoplastic resin having a polar group or/and an elastomer having the polar group. At least one kind of an anion-containing salt, having a fluoro group and a sulfonyl group, is added to the polymer composition without intermediary of a medium consisting of a low-molecular-weight polyether-containing compound or a low-molecular-weight polar compound whose number-average molecular weight is not more than 5000. The present invention also provides a composition, for a conductive roller or the like, containing polymer components and the polymeric-type antistatic agent dispersed in the polymer components.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: June 5, 2007
    Assignees: Sumitomo Rubber Industries, Ltd., Sanko Chemical Industry Co., Ltd.
    Inventors: Takayuki Hattori, Katsumi Terakawa, Tetsuo Mizoguchi, Kenichi Uesaka, Toshiaki Sakaki, Hiromasa Okubo, Noriaki Fujihana, Yoshiharu Tatsukami
  • Publication number: 20070021541
    Abstract: The present invention provides a polymeric-type antistatic agent containing a polymer composition consisting of a polymeric-type antistatic agent containing a resin or/and an elastomer as a main component thereof; or/and a thermoplastic resin having a polar group or/and an elastomer having the polar group. At least one kind of an anion-containing salt, having a fluoro group and a sulfonyl group, is added to the polymer composition without intermediary of a medium consisting of a low-molecular-weight polyether-containing compound or a low-molecular-weight polar compound whose number-average molecular weight is not more than 5000. The present invention also provides a composition, for a conductive roller or the like, containing polymer components and the polymeric-type antistatic agent dispersed in the polymer components.
    Type: Application
    Filed: September 26, 2006
    Publication date: January 25, 2007
    Inventors: Takayuki Hattori, Katsumi Terakawa, Tetsuo Mizoguchi, Kenichi Uesaka, Toshiaki Sakaki, Hiromasa Okubo, Noriaki Fujihana, Yoshiharu Tatsukami
  • Publication number: 20070021548
    Abstract: The present invention provides a polymeric-type antistatic agent containing a polymer composition consisting of a polymeric-type antistatic agent containing a resin or/and an elastomer as a main component thereof; or/and a thermoplastic resin having a polar group or/and an elastomer having the polar group. At least one kind of an anion-containing salt, having a fluoro group and a sulfonyl group, is added to the polymer composition without intermediary of a medium consisting of a low-molecular-weight polyether-containing compound or a low-molecular-weight polar compound whose number-average molecular weight is not more than 5000. The present invention also provides a composition, for a conductive roller or the like, containing polymer components and the polymeric-type antistatic agent dispersed in the polymer components.
    Type: Application
    Filed: September 26, 2006
    Publication date: January 25, 2007
    Inventors: Takayuki Hattori, Katsumi Terakawa, Tetsuo Mizoguchi, Kenichi Uesaka, Toshiaki Sakaki, Hiromasa Okubo, Noriaki Fujihana, Yoshiharu Tatsukami
  • Publication number: 20070021540
    Abstract: The present invention provides a polymeric-type antistatic agent containing a polymer composition consisting of a polymeric-type antistatic agent containing a resin or/and an elastomer as a main component thereof; or/and a thermoplastic resin having a polar group or/and an elastomer having the polar group. At least one kind of an anion-containing salt, having a fluoro group and a sulfonyl group, is added to the polymer composition without intermediary of a medium consisting of a low-molecular-weight polyether-containing compound or a low-molecular-weight polar compound whose number-average molecular weight is not more than 5000. The present invention also provides a composition, for a conductive roller or the like, containing polymer components and the polymeric-type antistatic agent dispersed in the polymer components.
    Type: Application
    Filed: September 26, 2006
    Publication date: January 25, 2007
    Inventors: Takayuki Hattori, Katsumi Terakawa, Tetsuo Mizoguchi, Kenichi Uesaka, Toshiaki Sakaki, Hiromasa Okubo, Noriaki Fujihana, Yoshiharu Tatsukami
  • Publication number: 20040220301
    Abstract: The present invention provides a polymeric-type antistatic agent containing a polymer composition consisting of a polymeric-type antistatic agent containing a resin or/and an elastomer as a main component thereof; or/and a thermoplastic resin having a polar group or/and an elastomer having the polar group. At least one kind of an anion-containing salt, having a fluoro group and a sulfonyl group, is added to the polymer composition without intermediary of a medium consisting of a low-molecular-weight polyether-containing compound or a low-molecular-weight polar compound whose number-average molecular weight is not more than 5000. The present invention also provides a composition, for a conductive roller or the like, containing polymer components and the polymeric-type antistatic agent dispersed in the polymer components.
    Type: Application
    Filed: January 14, 2004
    Publication date: November 4, 2004
    Inventors: Takayuki Hattori, Katsumi Terakawa, Tetsuo Mizoguchi, Kenichi Uesaka, Toshiaki Sakaki, Hiromasa Okubo, Noriaki Fujihana, Yoshiharu Tatsukami
  • Patent number: 6782820
    Abstract: The present invention provides a cylindrical printing blanket comprising a seamless sleeve and a sheet-like blanket having a fabric layer, a compressive layer and a surface printing layer, said sheet-like blanket being bonded onto the outer surface of said seamless sleeve. The blanket is made by cutting a long sheet-like blanket that has the fabric layer, the compressive layer and the surface printing layer and is bonded to the outer surface of the seamless sleeve, thus the operation can be done with good workability.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: August 31, 2004
    Assignees: Sumitomo Rubber Industries, Ltd., Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiromasa Okubo, Toshikazu Kinoshita, Seiji Tomono
  • Patent number: 6769362
    Abstract: The present invention provides a cylindrical printing blanket comprising a seamless sleeve and a sheet-like blanket having a fabric layer, a compressive layer and a surface printing layer, said sheet-like blanket being bonded onto the outer surface of said seamless sleeve. The blanket is made by cutting a long sheet-like blanket that has the fabric layer, the compressive layer and the surface printing layer and is bonded to the outer surface of the seamless sleeve, thus the operation can be done with good workability.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: August 3, 2004
    Assignees: Sumitomo Rubber Industries, Ltd., Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiromasa Okubo, Toshikazu Kinoshita, Seiji Tomono
  • Publication number: 20020134264
    Abstract: The present invention provides a cylindrical printing blanket comprising a seamless sleeve and a sheet-like blanket having a fabric layer, a compressive layer and a surface printing layer, said sheet-like blanket being bonded onto the outer surface of said seamless sleeve. The blanket is made by cutting a long sheet-like blanket that has the fabric layer, the compressive layer and the surface printing layer and is bonded to the outer surface of the seamless sleeve, thus the operation can be done with good workability.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 26, 2002
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Hiromasa Okubo, Toshikazu Kinoshita, Seiji Tomono
  • Patent number: 6207597
    Abstract: A printing blanket according to the present invention is substantially composed of a base fabric and a surface printing layer, and a part or the whole of the base fabric is composed of hollow fibers. The printing blanket is superior in productivity because it has a simpler structure than that of an air-type printing blanket, and has excellent compression properties similar to those of the air-type printing blanket.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: March 27, 2001
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Toshikazu Ogita, Seiji Tomono, Hiromasa Okubo, Takamichi Sagawa
  • Patent number: 6182568
    Abstract: The present invention provides a printing blanket which includes a first compressive layer which is porous and seamless, a non-expansion layer formed by spirally winding a wire in a circumferential direction of the blanket so that a distance between adjacent wires is not more than 0.5 mm, a second compressive layer which is porous and seamless, a surface printing layer which is seamless and non-compressive, and a cylindrical sleeve to be fit over a blanket cylinder, wherein these layers are laminated in this order on the outer peripheral surface of this cylindrical sleeve directly or through a seamless adhesive layer. According to this printing blanket, piling caused at the time of high-speed printing is inhibited and printing can be performed in high productivity.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: February 6, 2001
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Toshikazu Ogita, Seiji Tomono, Hiromasa Okubo, Takamichi Sagawa
  • Patent number: 6074735
    Abstract: A printing blanket according to the present invention is provided with a non-stretchable layer formed by arranging hollow yarn in a predetermined direction inside a surface printing layer constituting an elastomer. The printing blanket is and formed in a seamless cylindrical shape in the circumferential direction, is superior in productivity because it has a simpler structure than that of an air-type printing blanket, and has excellent compression properties similar to those of the air-type printing blanket.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: June 13, 2000
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Toshikazu Ogita, Makoto Sakuraoka, Seiji Tomono, Hiromasa Okubo, Takamichi Sagawa
  • Patent number: 5934192
    Abstract: A printing blanket in which an open cell compressible layer and a closed cell compressible layer are provided inside a surface printing layer, which has such superior characteristics that it has the advantages of both the compressible layers and does not cause a variety of problems which are caused by the disadvantages of both the compressible layers.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: August 10, 1999
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Toshikazu Ogita, Seiji Tomono, Hiromasa Okubo, Takamichi Sagawa
  • Patent number: 5884559
    Abstract: A printing blanket according to the present invention is formed by laminating a non-stretchable layer obtained by winding a thread in helical fashion in the circumferential direction, a compressible layer comprising an elastomer and in a porous and a seamless cylindrical shape, and a surface printing layer similarly comprising an elastomer and in a seamless cylindrical shape in this order, whereby high-quality prints can be obtained in a wide range, and the degree of the degradation of printing properties due to the reduction in reaction force is low.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: March 23, 1999
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hiromasa Okubo, Toshikazu Ogita, Seiji Tomono, Takamichi Sagawa
  • Patent number: 5832824
    Abstract: There is provided a printing blanket having no seam in the circumferential direction thereof, which realizes high quality of printings in a wide range from normal printing to high, speed printing, and which has high strength to facilitate the handling and prolonged life, thus enabling the reuse of the sleeve and the like.Specifically, on the peripheral surface of the cylindrical sleeve 21, the base layer 1, the compressible layer 2, the non-stretchable layer 3 and the surface printing layer 4 are laminated by interposing the adhesive layers 31, 32, 33 and 34, respectively. All of the above layers comprise a seamless elastomer. The non-stretchable layer 3 is prepared by winding a wire rod in helical fashion.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: November 10, 1998
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hiromasa Okubo, Toshikazu Kinoshita