Patents by Inventor Hiroki Murase
Hiroki Murase 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: 7874575Abstract: The airbag apparatus is provided with a retainer that includes a hold-down portion for attachment of a periphery of a gas inlet of an airbag to the case, a cover wall surrounding an inflator body, deflectors and catches. The cover wall includes a plurality of outlet ports for releasing inflation gas exited discharge ports of the inflator body radially. The deflectors deflect the inflation gas exited the outlet ports in a range of angle from a direction orthogonal to an axis of the inflator body to a downward direction extending toward the hold-down portion. The catches capture residual particles contained in the inflation gas when the gas deflected by the deflectors hit them.Type: GrantFiled: August 7, 2008Date of Patent: January 25, 2011Assignee: Toyoda Gosei Co., Ltd.Inventors: Takaki Fukuyama, Hiroki Murase, Yasushi Okada, Kenichi Fukurono, Toru Ozaki, Ichizo Shiga, Yuki Nonoyama
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Patent number: 7811673Abstract: To provide a novel high strength polyethylene multifilament which consists of a plurality of filaments having high strengths and uniform internal structures, and showing a narrow variation in the strengths of the monofilaments, and which has been difficult to be provided by the conventional gel spinning method. A high strength polyethylene multifilament consisting of a plurality of filaments which are characterized in that the crystal size of monoclinic crystal is 9 nm or less; the stress Raman shift factor is ?5.0 cm?1/(cN/dTex) or more; the average strength is 20 CN/dTex or higher; the knot strength retention of each monofilament is 40% or higher; CV indicating a variation in the strengths of the monofilaments is 25% or lower; the elongation at break is from 2.5% inclusive to 6.0% inclusive; the fineness of each filament is 10 dTex or less; and the melting point of the filaments is 145° C. or higher.Type: GrantFiled: March 12, 2004Date of Patent: October 12, 2010Assignee: Toyo Boseki Kabushiki KaishaInventors: Godo Sakamoto, Tooru Kitagawa, Yasuo Ohta, Yasunori Fukushima, Hiroki Murase
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Patent number: 7736564Abstract: A filament having excellent incision resistance includes as a primary component a polyethylene filament having a weight-average molecular weight of 300,000 or less and a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.0 or less as determined in the state of a filament as well as a modulus of 500 cN/dtex or more. This filament is useful to produce a fabric excellent in incision resistance, a fibrous material for reinforcing mortar or concrete, and a rope, each of which comprises the filament. The filament can be produced by drawing a non-drawn polyolefin filament which comprises a polyethylene having a weight-average molecular weight of 60,000-600,000, a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.5 or less, and a rate of birefringence (?n) of 0.008 or more, at a temperature not higher than the ?-relaxation temperature of the non-drawn filament.Type: GrantFiled: March 20, 2007Date of Patent: June 15, 2010Assignee: Toyo Boseki Kabushiki KaishaInventors: Godo Sakamoto, Syoji Oda, Hiroki Murase
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Publication number: 20090045607Abstract: The airbag apparatus is provided with a retainer that includes a hold-down portion for attachment of a periphery of a gas inlet of an airbag to the case, a cover wall surrounding an inflator body, deflectors and catches. The cover wall includes a plurality of outlet ports for releasing inflation gas exited discharge ports of the inflator body radially. The deflectors deflect the inflation gas exited the outlet ports in a range of angle from a direction orthogonal to an axis of the inflator body to a downward direction extending toward the hold-down portion. The catches capture residual particles contained in the inflation gas when the gas deflected by the deflectors hit them.Type: ApplicationFiled: August 7, 2008Publication date: February 19, 2009Applicant: TOYODA GOSEI., LTD.Inventors: Takaki Fukuyama, Hiroki Murase, Yasushi Okada, Kenichi Fukurono, Toru Ozaki, Ichizo Shiga, Yuki Nonoyama
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Patent number: 7357982Abstract: The present invention relates to polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics containing in themselves an organic pigment having heat resistance as high as a thermal decomposition temperature of 200° C. or higher, and soluble in a mineral acid and having group(s) of —N? and/or NH— in the molecule, such as any of perinones and/or perylenes, any of phthalocyanines, any of quinacridones, and any of dioxazines, wherein they have a strength retention of 50% or higher when exposed to light from a xenon lamp for 100 hours and having a tensile strength retention of 85% or higher after exposed to an atmosphere of a temperature of 80° C. and a relative humidity of 80% for 700 hours. The polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics can be used for cords for reinforcing rubber, sheets and rods for reinforcing cement/concrete, composite materials, sail clothes, ropes, knife proof vests and bullet proof vests.Type: GrantFiled: June 26, 2003Date of Patent: April 15, 2008Assignee: Toyo Boseki Kabushiki KaishaInventors: Yukihiro Abe, Go Matsuoka, Kohei Kiriyama, Hiroki Murase, Muneatsu Nakamura, Yukihiro Nomura, Hironori Eguchi, Yukinari Okuyama, Tadao Kuroki, Takaharu Ichiryu, Hiroshi Tachimori
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Publication number: 20080054608Abstract: The airbag apparatus includes an airbag housed in a folded state and an inflator for supplying inflation gas to the airbag. The inflator includes a first gas supply region and a second gas supply region respectively supplying inflation gas into the airbag under control of a control device. The first gas supply region is operable independently and in advance of the second gas supply region. The substance quantity of inflation gas supplied to the airbag by the first gas supply region per unit time at the time the first gas supply region operates independently and in advance of the second gas supply region is less than the substance quantity of inflation gas supplied to the airbag by the second gas supply region per unit time.Type: ApplicationFiled: August 28, 2007Publication date: March 6, 2008Applicant: TOYODA GOSEI CO., LTD.Inventors: Kazuaki Bito, Hiroki Murase, Kazutoshi Hayashi
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Publication number: 20070190321Abstract: A filament having excellent incision resistance includes as a primary component a polyethylene filament having a weight-average molecular weight of 300,000 or less and a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.0 or less as determined in the state of a filament as well as a modulus of 500 cN/dtex or more. This filament is useful to produce a fabric excellent in incision resistance, a fibrous material for reinforcing mortar or concrete, and a rope, each of which comprises the filament. The filament can be produced by drawing a non-drawn polyolefin filament which comprises a polyethylene having a weight-average molecular weight of 60,000-600,000, a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.5 or less, and a rate of birefringence (?n) of 0.008 or more, at a temperature not higher than the ?-relaxation temperature of the non-drawn filament.Type: ApplicationFiled: March 20, 2007Publication date: August 16, 2007Applicant: Toyo Boseki Kabushiki KaishaInventors: Godo Sakamoto, Syoji Oda, Hiroki Murase
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Patent number: 7247372Abstract: The invention relates to a filament excellent in incision resistance comprising as a primary component a polyethylene filament having a weight-average molecular weight of 300,000 or less and a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.0 or less as determined in the state of a filament as well as a modulus of 500 cN/dtex or more, and to a fabric excellent in incision resistance, a fibrous material for reinforcing cement mortar or concrete, and a rope, each of which comprises the filament. The filament can be produced by drawing a non-drawn polyolefin filament which comprises a polyethylene having a weight-average molecular weight of 60,000-600,000, a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.5 or less, and a rate of birefringence (?n) of 0.008 or more, at a temperature not higher than the ?-relaxation temperature of said non-drawn filament.Type: GrantFiled: April 4, 2003Date of Patent: July 24, 2007Assignee: Toyo Boseki Kabushiki KaishaInventors: Godo Sakamoto, Syoji Oda, Hiroki Murase
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Publication number: 20070148452Abstract: PURPOSE: To provide a novel high strength polyethylene multifilament which consists of a plurality of filaments having high strengths and uniform internal structures, and showing a narrow variation in the strengths of the monofilaments, and which has been difficult to be provided by the conventional gel spinning method. SOLUTION: A high strength polyethylene multifilament consisting of a plurality of filaments which are characterized in that the crystal size of monoclinic crystal is 9 nm or less; the stress Raman shift factor is ?5.0 cm?1/(cN/dTex) or more; the average strength is 20 CN/dTex or higher; the knot strength retention of each monofilament is 40% or higher; CV indicating a variation in the strengths of the monofilaments is 25% or lower; the elongation at break is from 2.5% inclusive to 6.0% inclusive; the fineness of each filament is 10 dTex or less; and the melting point of the filaments is 145° C. or higher.Type: ApplicationFiled: March 12, 2004Publication date: June 28, 2007Inventors: Godo Sakamoto, Tooru Kitagawa, Yasuo Ohta, Yasunori Fukushima, Hiroki Murase
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Publication number: 20070104948Abstract: The present invention relates to polybenzazole fibers which can still have high durability against atmospheres of high temperatures and high humidity even after yarns made thereof have had kink bands therein due to the damages in the course of post-processing for making woven fabrics, knitted fabrics, braids, ropes and cords. The invention also relates to articles comprising the polybenzazole fibers, particularly spun yarns, rubber-reinforcing materials, fiber-reinforced composite materials, woven or knitted fabrics, knife-proof materials or bullet-proof vests, ropes and sail cloths.Type: ApplicationFiled: December 9, 2004Publication date: May 10, 2007Inventors: Kohei Kiriyama, Hiroki Murase, Yukihiro Abe
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Patent number: 7208109Abstract: A method of preparing a precursor for a composite having wet strength of 2 to 50 kgf/mm2 and a mean surface void diameter of 0.01 to 2 ?m by molding a solution of a rigid polymer having a concentration of 1 to 1.3 times the optical anisotropy lower limit solution concentration C2, thereafter rendering the solution non-flowable by absorbing a coagulant under a condition causing no solvent extraction and thereafter extracting the solvent, and a method of preparing a molecular composite having a mean thickness of 2 to 200 ?m by impregnating this precursor for a composite with a solution of a polymer or reactive molecules.Type: GrantFiled: March 25, 2002Date of Patent: April 24, 2007Assignee: Toyo Boseki Kabushiki KaishaInventors: Yoshihiko Teramoto, Seiji Watanuki, Hiroki Murase
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Publication number: 20060083923Abstract: The present invention relates to polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics containing in themselves an organic pigment having heat resistance as high as a thermal decomposition temperature of 200° C. or higher, and soluble in a mineral acid and having group(s) of —N=and/or NH— in the molecule, such as any of perinones and/or perylenes, any of phthalocyanines, any of quinacridones, and any of dioxazines, wherein they have a strength retention of 50% or higher when exposed to light from a xenon lamp for 100 hours and having a tensile strength retention of 85% or higher after exposed to an atmosphere of a temperature of 80° C. and a relative humidity of 80% for 700 hours. The polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics can be used for cords for reinforcing rubber, sheets and rods for reinforcing cement/concrete, composite materials, sail clothes, ropes, knife proof vests and bullet proof vests.Type: ApplicationFiled: June 26, 2003Publication date: April 20, 2006Inventors: Yukihiro Abe, Go Matsuoka, Kohei Kiriyama, Hiroki Murase, Muneatsu Nakamura, Yukihiro Nomura, Hironori Eguchi, Yukinari Okuyama, Tadao Kuroki, Takaharu Ichiryu, Hiroshi Tachimori
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Publication number: 20060046049Abstract: There is provided a polybenzazole fiber or film containing a basic organic compound in the form of a monomer or a condensate, selected from the group consisting of guanidines, triazoles, quinazolines, piperidines, anilines, pyridines, cyanuric acids, and p-phenylenediamine, m-phenylenediamine and a mixture thereof. This fiber has characteristics in that the X-ray meridian diffraction half-width factor is 0.3°/GPa or less, that the elasticity decrement (Er) attributed to change of molecular orientation is 30 GPa or less, and that the breaking strength is 1 GPa or more. This fiber can be used in staple fiber, a spun yarn, a woven or knit fabric, a felt material, a composite material, a cord, a rod, a fibrous sheet, a knife proof vest or a bullet proof vest.Type: ApplicationFiled: June 26, 2003Publication date: March 2, 2006Inventors: Yukihiro Abe, Go Matsuoka, Kohei Kiriyama, Hiroki Murase, Muneatsu Nakamura, Yokihiro Nomura, Hironori Eguchi, Yukinari Okuyama, Tadao Kuroki, Takaharu Ichiryu
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Publication number: 20050118418Abstract: The invention relates to a filament excellent in incision resistance comprising as a primary component a polyethylene filament having a weight-average molecular weight of 300,000 or less and a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.0 or less as determined in the state of a filament as well as a modulus of 500 cN/dtex or more, and to a fabric excellent in incision resistance, a fibrous material for reinforcing cement mortar or concrete, and a rope, each of which comprises the filament. The filament can be produced by drawing a non-drawn polyolefin filament which comprises a polyethylene having a weight-average molecular weight of 60,000-600,000, a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.5 or less, and a rate of birefringence (?n) of 0.008 or more, at a temperature not higher than the ?-relaxation temperature of said non-drawn filament.Type: ApplicationFiled: April 4, 2003Publication date: June 2, 2005Applicant: TOYO BOSEKI KABUSHIKE KAISHAInventors: Godo Sakamoto, Syoji Oda, Hiroki Murase
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Publication number: 20040056381Abstract: A method of preparing a precursor for a composite having wet strength of 2 to 50 kgf/mm2 and a mean surface void diameter of 0.01 to 2 &mgr;m by molding a solution of a rigid polymer having a concentration of 1 to 1.3 times the optical anisotropy lower limit solution concentration C2, thereafter rendering the solution non-flowable by absorbing a coagulant under a condition causing no solvent extraction and thereafter extracting the solvent, and a method of preparing a molecular composite having a mean thickness of 2 to 200 &mgr;m by impregnating this precursor for a composite with a solution of a polymer or reactive molecules.Type: ApplicationFiled: September 26, 2003Publication date: March 25, 2004Inventors: Yoshihiko Teramoto, Seiji Watanuki, Hiroki Murase
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Patent number: 5429787Abstract: Polybenzazole fibers can be rapidly dried without undue fiber damage by exposing them to two or more set point temperatures with the temperatures being selected relative to the residual moisture content of the fiber. The residence time required for the fiber at each progressively higher temperature can be reduced if the fiber is always in full contact with the set point temperature of the drying equipment.Type: GrantFiled: November 2, 1993Date of Patent: July 4, 1995Assignee: The Dow Chemical CompanyInventors: Jang-hi Im, Chieh-Chun Chau, Hiroki Murase, Tooru Kitagawa, Takaharu Ichiryu