Patents by Inventor Naruhiko Mashita
Naruhiko Mashita 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: 6455626Abstract: The present invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(alkenyl benzene-co-maleimide) polymer with a maleated polyalkylene and an alkyl diamine under substantially dry conditions sufficient to form a polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product; and, dispersing the polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product with an extender oil sufficient to form the gel. The present invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.Type: GrantFiled: June 5, 2001Date of Patent: September 24, 2002Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Patent number: 6399696Abstract: There are disclosed a thermoplastic elastomer composition which comprises (a) a hydrogenated block copolymer obtained by hydrogenating the block copolymer comprising at least one polymer block composed principally of a vinylic aromatic compound and at least one polymer block composed principally of a conjugated diene compound; (b) a non-aromatic base softening agent having a kinematic viscosity at 40° C.Type: GrantFiled: February 17, 2000Date of Patent: June 4, 2002Assignee: Bridgestone CorporationInventors: Shinichi Toyosawa, Youichi Nishimuro, Kunio Machida, Takashi Shimizu, Naruhiko Mashita, Yasunori Fukuda, Jun Arai, Yasushi Imai, Tadashi Utsunomiya
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Patent number: 6329459Abstract: There are disclosed a block copolymer of at least one elastomeric block and at least one syndiotactic polystyrene block which comprises 100 parts by weight of a polymer component comprising 1 to 80% by weight of syndiotactic polystyrene (sPS) block(s) and 99 to 20% by weight of rubbery elastomeric block(s) and at least 30 parts by weight of an extender. These extended block copolymer compositions display the characteristics of thermoplastic elastomers and are useful for high temperature applications possessing unique softness.Type: GrantFiled: September 23, 1996Date of Patent: December 11, 2001Assignee: Bridgestone CorporationInventors: Jung W. Kang, Xiaorong Wang, Xiao-Liang Luo, Frank J. Clark, Jason T. Poulton, Takahiro Matsuse, Naruhiko Mashita, Hideo Takeichi, Shinichi Toyosawa
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Publication number: 20010034393Abstract: The present invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(alkenyl benzene-co-maleimide) polymer with a maleated polyalkylene and an alkyl diamine under substantially dry conditions sufficient to form a polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product; and, dispersing the polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product with an extender oil sufficient to form the gel. The present invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.Type: ApplicationFiled: June 5, 2001Publication date: October 25, 2001Inventors: Xiaorong Wang, Victor J. Foltz, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Publication number: 20010021743Abstract: A method of producing a high-performance graft copolymer having both low-creep characteristics and damping properties is disclosed, which comprises:Type: ApplicationFiled: December 28, 2000Publication date: September 13, 2001Inventors: Yuichiro Wakana, Naruhiko Mashita, Yasuo Horikawa, Tadashi Utunomiya, Tuyoshi Hamanaka
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Publication number: 20010018490Abstract: There are disclosed a resin composition which is excellent in rubber elasticity, oil maintainability and adhesivity to a metal, and comprises a thermoplastic elastomer composition comprising a (a1) hydrogenated block copolymer which is obtained by hydrogenating a block copolymer consisting essentially of a polymer block composed principally of a vinyl aromatic compound and a polymer block composed principally of a conjugated diene compound, which has a weight average molecular weight of at least 200,000, in which the polymer block composed principally of a vinyl aromatic compound is polystyrene, and in which the content by weight of the polystyrene moiety contained in the hydrogenated block copolymer is 20 to 40% ; a (b1) non-aromatic rubber-softening agent having a kinematic viscosity at 40° C.Type: ApplicationFiled: February 14, 2001Publication date: August 30, 2001Inventors: Naruhiko Mashita, Shinichi Toyosawa, Youichi Nishimuro, Yasushi Imai, Tadashi Utsunomiya, Ichiro Akasaka, Youkou Saito
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Patent number: 6248825Abstract: The present invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(alkenyl benzene-co-maleimide) polymer with a maleated polyalkylene and an alkyl diamine under substantially dry conditions sufficient to form a polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product; and, dispersing the polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product with an extender oil sufficient to form the gel. The present invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.Type: GrantFiled: May 6, 1998Date of Patent: June 19, 2001Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Patent number: 6204354Abstract: The instant invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(disubstituted ethylene-co-maleimide) polymer with a maleated polyalkylene and an alkyl diamine under substantially dry conditions sufficient to form a polyalkylene grafted poly(disubstituted ethylene-co-maleimide) polymer product; and, dispersing the polyalkylene grafted poly(disubstituted ethylene-co-maleimide) polymer product with an extender oil sufficient to form the gel. The instant invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.Type: GrantFiled: May 6, 1998Date of Patent: March 20, 2001Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz, David F. Lawson, Hideo Takeichi, Naruhiko Mashita
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Patent number: 6191197Abstract: There are disclosed a gel or polymer composition which comprises 100 parts by weight of a polymer blend component comprising 1 to 90% by weight of a poly(vinyl aromatic hydrocarbon) polymer having a syndiotactic configuration and 99 to 10% by weight of a rubbery elastomer and at least 30 parts by weight of an extender oil or a low molecular weight organic component. These gel compositions have super soft properties, heat resistance, and/or damping properties.Type: GrantFiled: September 23, 1996Date of Patent: February 20, 2001Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Xiao-Liang Luo, Frank J. Clark, Hideo Takeichi, James E. Hall, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Patent number: 6184292Abstract: The instant invention provides a soft gel composition comprising a hydrogenated block copolymer, a polyphenylene ether and a substantially amorphous polyolefin or hydrogenated polydiene blended in respective proportions sufficient to provide the composition with a Shore A hardness of 30 or less, and a service temperature of up to, and including about 150° C.Type: GrantFiled: October 5, 1998Date of Patent: February 6, 2001Assignee: Bridgestone CorporationInventors: James E. Hall, Xiaorong Wang, Hideo Takeichi, Naruhiko Mashita
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Patent number: 6133354Abstract: The present invention teaches a method for enabling the formation of a high damping composition. The method includes mixing a centipede polymer, i.e., a poly(disubstituted ethylene-co-maleimide) polymer, and plasticizers or extenders within a non-vulcanized thermoplastic elastomer to form a relatively high damping gel composition.Type: GrantFiled: November 17, 1998Date of Patent: October 17, 2000Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz, David F. Lawson, Naruhiko Mashita
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Patent number: 6130696Abstract: There are disclosed an elastic member for an ink-jet recording apparatus which member is composed of a material comprising at least one copolymer (thermoplastic elastomer) constituted of at least one polymer block containing a vinyl aromatic compound as an principal component and at least one polymer block containing a conjugated diene compound as an principal component, the material further having 1-50 parts by weight of a polyolefin resin and 1-500 parts by weight of a softening agent based on 100 parts by weight of the copolymer. The elastic member is well suited for use in an ink tank as an ink tank valve for supplying a recording head with the ink to be filled in the ink chamber, for use as a sealing member which is installed at an ink supply port and prevents the ink from leaking through the ink supply port, and further for use as a sealing member which is installed on the main body of the ink-jet recording apparatus and prevents the ink from leaking through the recording head.Type: GrantFiled: May 15, 1998Date of Patent: October 10, 2000Assignee: Bridgestone CorporationInventors: Naruhiko Mashita, Tadashi Utsunomiya, Yoshihide Fukahori
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Patent number: 6054532Abstract: The present invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(alkenyl benzene-co-maleimide) polymer with a maleated polyalkylene and a maleated hydrogenated block copolymer and an alkyl diamine grafting agent under substantially dry conditions sufficient to form a hydrogenated block copolymer-polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product; and, dispersing the hydrogenated block copolymer-polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product with an extender oil sufficient to form the gel. The present invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.Type: GrantFiled: May 6, 1998Date of Patent: April 25, 2000Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz, James E. Hall, Hideo Takeichi, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Patent number: 5994468Abstract: The instant invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting a poly(maleimide-co-alkenyl benzene) polymer with a nylon and an alkyl diamine under substantially dry conditions sufficient to form a nylon grafted poly(maleimide-co-alkenyl benzene) polymer product; and, dispersing the nylon grafted poly(maleimide-co-alkenyl benzene) polymer product with an extender oil sufficient to form the gel. The instant invention also contemplates a polymer gel composition, a polymer composition and an article manufactured from the polymer gel composition.Type: GrantFiled: May 6, 1998Date of Patent: November 30, 1999Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz, James E. Hall, Naruhiko Mashita, Hideo Takeichi
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Patent number: 5912296Abstract: There are disclosed a gel or polymer composition which comprises 100 parts by weight of: a graft copolymer composition formed from the graft reaction of a maleate functionalized ethylene-alpha-olefin copolymer and a maleate functionalized polypropylene with an organic diamine grafting agent, and at least 30 parts by weight of an extender oil or a low molecular weight organic component. These gel compositions have super soft properties, heat resistance, and/or damping properties.Type: GrantFiled: May 19, 1997Date of Patent: June 15, 1999Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Frank J. Clark, Hideo Takeichi, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Patent number: 5910530Abstract: There is disclosed a gel or polymer composition containing: 100 parts by weight of a graft copolymer composition formed by the reaction of an organic diamine grafting agents with maleate functional groups on an elastomeric block containing block copolymer and with maleate functional groups on polypropylene, and at least 30 parts by weight of an extender oil or a low molecular weight organic component. These gel compositions have super soft properties, heat resistance, and/or damping properties.Type: GrantFiled: May 19, 1997Date of Patent: June 8, 1999Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Frank J. Clark, Hideo Takeichi, Takahiro Matsuse, Naruhiko Mashita, Shinichi Toyosawa
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Patent number: 5755045Abstract: A shoe member is formed of a polymer composition comprising (A) a composite material having a low molecular weight material retained in a medium material and (B) a polymer material. The low molecular weight material has a viscosity of up to 5.times.10.sup.5 centipoise at 100.degree. C. The difference in solubility parameter between the low molecular weight material and the medium material is up to 3.0. The weight ratio of low molecular weight material/medium material is at least 1.0. The difference in solubility parameter between the low molecular weight material and the polymer material is up to 4.0. The weight ratio of low molecular weight material/polymer material is at least 0.5. The polymer composition is enclosed in a rubbery or elastomeric cover particularly when it is used in the outsole.Type: GrantFiled: February 14, 1997Date of Patent: May 26, 1998Assignee: Bridgestone CorporationInventors: Naruhiko Mashita, Fumio Sato, Satoshi Takezawa, Shinichi Toyosawa
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Patent number: 5716997Abstract: A polymeric reticulated structure is prepared by mixing an ethylene-propylene copolymer having an ethylene content of at least 60% by weight or a thermoplastic block copolymer terminated with a crystalline ethylene block with a low molecular weight material. The low molecular weight material is trapped in the three-dimensional continuous network the copolymer forms.Type: GrantFiled: August 31, 1995Date of Patent: February 10, 1998Assignee: Bridgestone CorporationInventors: Shinichi Toyosawa, Naruhiko Mashita, Yasushi Imai, Takahiro Matsuse, Yuichiro Wakana, Yoshihide Fukahori
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Patent number: 5681649Abstract: A shoe member is formed of a polymer composition comprising (A) a composite material having a low molecular weight material retained in a medium material and (B) a polymer material. The low molecular weight material has a viscosity of up to 5.times.10.sup.5 centipoise at 100.degree. C. The difference in solubility parameter between the low molecular weight material and the medium material is up to 3.0. The weight ratio of low molecular weight material/medium material is at least 1.0. The difference in solubility parameter between the low molecular weight material and the polymer material is up to 4.0. The weight ratio of low molecular weight material/polymer material is at least 0.5. The polymer composition is enclosed in a rubbery or elastomeric cover particularly when it is used in the outsole.Type: GrantFiled: July 27, 1995Date of Patent: October 28, 1997Assignee: Bridgestone CorporationInventors: Naruhiko Mashita, Fumio Sato, Satoshi Takezawa, Shinichi Toyosawa
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Patent number: 5451454Abstract: A blend of high-molecular and a low-molecular organic material contains the high-molecular organic material in a proportion smaller than that of the low-molecular organic material, and has a three-dimensionally continuous network skeleton structure formed by the high-molecular organic material. The structure preferably has an average cell or mesh diameter not exceeding 500 microns. The removal of the low-molecular organic material from the blend gives a functional porous material consisting of the high-molecular organic material. The replacement of the low-molecular organic material in the blend with a solid or liquid, or a mixture thereof, gives a functional composite material containing the solid or liquid, or their mixture in the network skeleton structure.Type: GrantFiled: December 14, 1992Date of Patent: September 19, 1995Assignee: Bridgestone CorporationInventors: Yoshihide Fukahori, Naruhiko Mashita, Akihiko Ogino, Shinichi Toyosawa, Takeshi Ohba, Yasushi Imai