Patents by Inventor Hajime Tsujihana
Hajime Tsujihana 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).
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Patent number: 8334344Abstract: The sliding material is obtainable by extrusion of a raw material containing an olefin-based polymer and a silicone compound as the essential components. A part of the olefin-based polymer forms a crosslinked material in the sliding material. The crosslinked material forms domains to disperse in the sliding material so as to prevent uneven distribution of the silicone compound in the extrusion direction. The residual fraction of hot xylene reflux of the sliding material is in a range from 33 to 75% by weight based on the total weight of the sliding material, and the content of the silicone compound based on the total weight of the sliding material is in a range from 5 to 35% by weight.Type: GrantFiled: May 13, 2009Date of Patent: December 18, 2012Assignee: Shin-Etsu Polymer Co., Ltd.Inventors: Masayuki Honda, Nobuyasu Noda, Hajime Tsujihana, Fukuji Watanobe, Nobuhiko Takahashi, Tsuneo Usuda
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Patent number: 7999038Abstract: A weatherstrip composition includes the following polymer A group and polymer B group, Polymer A group. A polymer group is made up of a domain 1 consisting of crosslinked product of a polymer selected from a group consisting of ethylene polymer, ethylene/?-olefin copolymer (where the ?-olefin has from 3 to 20 carbons), ethylene/?-olefin/diene copolymer (where the .alpha.-olefin has from 3 to 20 carbons), homopolymer rubber of a conjugated diene monomer, copolymer polymerized with a conjugated diene monomer and an aromatic vinyl monomer, and hydrogenated copolymer polymerized with a conjugated diene monomer and an aromatic vinyl monomer (where the hydrogenation of all double bonds except for the aromatic groups is at least 50%), and a domain 2 is made up of crosslinked product of ethylene polymer or ethylene/?-olefin copolymer (where the ?-olefin has from 3 to 20 carbons).Type: GrantFiled: January 29, 2007Date of Patent: August 16, 2011Assignee: Shin-Etsu Polymer Co., Ltd.Inventors: Masayuki Honda, Hajime Tsujihana, Minoru Yoshida, Nobuyasu Noda
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Publication number: 20100222479Abstract: The sliding material is obtainable by extrusion of a raw material containing an olefin-based polymer and a silicone compound as the essential components. A part of the olefin-based polymer forms a crosslinked material in the sliding material. The crosslinked material forms domains to disperse in the sliding material so as to prevent uneven distribution of the silicone compound in the extrusion direction. The residual fraction of hot xylene reflux of the sliding material is in a range from 33 to 75% by weight based on the total weight of the sliding material, and the content of the silicone compound based on the total weight of the sliding material is in a range from 5 to 20% by weight.Type: ApplicationFiled: July 10, 2007Publication date: September 2, 2010Applicant: SHIN-ETSU POLYMER CO., LTD.Inventors: Masayuki Honda, Nobuyasu Noda, Hajime Tsujihana, Fukuji Watanobe, Nobuhiko Takahashi, Tsuneo Usuda
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Publication number: 20090277095Abstract: The sliding material is obtainable by extrusion of a raw material containing an olefin-based polymer and a silicone compound as the essential components. A part of the olefin-based polymer forms a crosslinked material in the sliding material. The crosslinked material forms domains to disperse in the sliding material so as to prevent uneven distribution of the silicone compound in the extrusion direction. The residual fraction of hot xylene reflux of the sliding material is in a range from 33 to 75% by weight based on the total weight of the sliding material, and the content of the silicone compound based on the total weight of the sliding material is in a range from 5 to 35% by weight.Type: ApplicationFiled: May 13, 2009Publication date: November 12, 2009Applicant: Shin-Etsu Polymer Co., Ltd.Inventors: Masayuki Honda, Nobuyasu Noda, Hajime Tsujihana, Fukuji Watanobe, Nobuhiko Takahashi, Tsuneo Usuda
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Publication number: 20070122570Abstract: A weatherstrip in which the sliding part of a lip in sliding contact with window glass is covered by a sliding member, wherein the sliding member is composed of a weatherstrip composition containing a polymer A group and a polymer B group, 40 to 100 wt % of the total weight of this composition is accounted for by the polymer A group, and 0 to 40 wt % by the polymer B group, the polymer A group is made up of a domain 1 consisting of crosslinked product of ethylene polymer and the like, and a domain 2 consisting of crosslinked product of ethylene polymer or ethylene/?-olefin copolymer, the storage elastic modulus E? of domain 1 is at least 3 GPa and less than 9 GPa, and the loss tangent tan? is from 0.1 to 0.4, the storage elastic modulus E? of domain 2 is at least 9 GPa and no more than 13 GPa, and the loss tangent tan? is from 0.1 to 0.Type: ApplicationFiled: January 29, 2007Publication date: May 31, 2007Applicant: Shin-Etsu Polymer Co., Ltd.Inventors: Masayuki Honda, Hajime Tsujihana, Minoru Yoshida, Nobuyasu Noda
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Publication number: 20070077375Abstract: A weatherstrip in which the sliding part of a lip in sliding contact with window glass is covered by a sliding member, wherein the sliding member is composed of a weatherstrip composition containing a polymer A group and a polymer B group, 40 to 100 wt % of the total weight of this composition is accounted for by the polymer A group, and 0 to 40 wt % by the polymer B group, the polymer A group is made up of a domain 1 consisting of crosslinked product of ethylene polymer and the like, and a domain 2 consisting of crosslinked product of ethylene polymer or ethylene/?-olefin copolymer, the storage elastic modulus E? of domain 1 is at least 3 GPa and less than 9 GPa, and the loss tangent tan ? is from 0.1 to 0.4, the storage elastic modulus E? of domain 2 is at least 9 GPa and no more than 13 GPa, and the loss tangent tan ? is from 0.1 to 0.Type: ApplicationFiled: April 6, 2006Publication date: April 5, 2007Applicant: Shin-Etsu Polymer Co., Ltd.Inventors: Masayuki Honda, Hajime Tsujihana, Minoru Yoshida, Nobuyasu Noda