Patents by Inventor Kunio Iwanami
Kunio Iwanami 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: 6156836Abstract: This invention provides polypropylene resin compositions which have sharply improved balance of physical properties in comparison with the related polypropylene materials, are materials that can be used in both interior and exterior parts of automobiles, have excellent thin-wall moldability and can sharply reduce generation of flow marks. Particularly, it provides a polypropylene resin composition which comprises specified amounts of (A) a specified ethylene-propylene block copolymer, (B) a specified thermoplastic elastomer and (C) talc, wherein it has specified values of physical properties measured by ASTM and has a degree of b-axis orientation of 720 or more which is calculated from the ratio of differential peak intensities measured by wide-angle X-ray diffraction of the central area of an ASTM No. 1 dumbbell prepared by injection molding.Type: GrantFiled: December 24, 1998Date of Patent: December 5, 2000Assignees: Japan Polychem Corporation, Toyota Jidosha Kabushiki KaishaInventors: Kunio Iwanami, Akira Kobayashi, Mitsuhiro Murayama, Yuji Fujita, Takayuki Nagai, Takao Nomura, Masatoshi Matsuda, Osamu Kito, Hisayuki Iwai
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Patent number: 5621046Abstract: A polypropylene resin composition including (A) 50-90 parts by weight of a polypropylene resin including (a) 3-30 weight % of stereoblock polypropylene having a weight-average molecular weight of 5,000-1,000,000, a percentage of five continuous propylene monomer units in which all propylene bonds are meso bonds and a percentage of five continuous propylene monomer units in which all propylene bonds are racemic bonds being 70% or more and 5% or more, respectively relative to the all propylene bonds, and (b) 70-97 weight % of an ultra-high stereospecific polypropylene having a melt flow rate of 0.1-1,000 g/10 minutes, an average meso chain length Nm calculated from a triad percentage determined from .sup.13 C-NMR spectrum by the following formula of Nm=2[mm]/[mr]+1, wherein [mm] is (isotactic triad/total triad).times.100 (%) and [mr] is (heterotactic triad/total triad).times.100 (%), meeting a relation of Nm>250+29.Type: GrantFiled: July 11, 1995Date of Patent: April 15, 1997Assignees: Tonen Chemical Corporation, Toyota Jidosha Kabushiki KaishaInventors: Kunio Iwanami, Masatoshi Ohkura, Satoshi Ueki, Shigeyuki Toki, Takeyoshi Nishio, Takao Nomura
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Patent number: 5569028Abstract: A scroll compressor includes a compressor housing made up of a cup-like first casing having a suction port defined therein and a cap-like second casing having a discharge port defined therein. The compressor housing accommodates a stationary scroll member having a stationary end plate and a stationary scroll wrap protruding axially from the stationary end plate, and an orbiting scroll member having an orbiting end plate and an orbiting scroll wrap protruding axially from the orbiting end plate, with the orbiting scroll wrap being in engagement with the stationary scroll wrap to define a plurality of working pockets therebetween. At least one shim is interposed between mating surfaces of the first and second casings to regulate axial gaps between axial end surfaces of the stationary and orbiting scroll wraps and the orbiting and stationary end plates opposed thereto.Type: GrantFiled: July 10, 1995Date of Patent: October 29, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Michio Yamamura, Kunio Iwanami, Tatsuhisa Taguchi, Masafumi Fukushima
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Patent number: 5562434Abstract: A scroll compressor includes a stationary scroll and an orbiting scroll having respective wrap elements in engagement with each other. Each of the stationary and orbiting wrap elements has a tip seal groove defined therein and having opposing internal and external walls that are formed so as to represent two involute curves having different phases, respectively.Type: GrantFiled: May 24, 1995Date of Patent: October 8, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiko Makino, Michio Yamamura, Masafumi Fukushima, Kunio Iwanami
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Patent number: 5562436Abstract: A scroll compressor includes an orbital drive mechanism for causing orbiting of an orbiting scroll relative to a stationary scroll. The orbiting scroll is formed with a generally cylindrical boss extending in a direction away from the stationary scroll. The orbital drive mechanism includes a main shaft rotatably supported by a compressor housing, an eccentric shaft extending from one end face of the main shaft and having a longitudinal axis parallel to, but offset laterally from a longitudinal axis of the main shaft, and an eccentric bush having a socket inserted rotatably into the cylindrical boss. The eccentric shaft, engaged in the socket, is of a non-circular cross-section having short and long axes perpendicular to each other.Type: GrantFiled: May 24, 1995Date of Patent: October 8, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Sadao Kawahara, Teruyuki Akazawa, Kunio Iwanami, Masafumi Fukushima, Akihiko Shimizu
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Patent number: 5558510Abstract: A scroll compressor includes a stationary scroll and an orbiting scroll having respective wrap elements in engagement with each other. An inner end portion of an internal wall of one of the wrap elements is partially shaped to represent a curve identical to or approximate to an envelope curve which is obtained through circular translation of a circular arc connected with an external wall of the other wrap element. The radius of the circular arc is so chosen as to increase the shortest distance a.sub.x from each of points on the curve to the external wall of the one wrap element towards the inner end of the one wrap element.Type: GrantFiled: May 24, 1995Date of Patent: September 24, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masahiko Makino, Michio Yamamura, Masafumi Fukushima, Kunio Iwanami
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Patent number: 5461105Abstract: A resin composition having excellent paint coatability containing (a) 50-80 weight % of a multi-stage polymerized propylene-ethylene block copolymer consisting essentially of (i) a propylene homopolymer portion, (ii) a propylene-ethylene random copolymer portion, and (iii) an ethylene homopolymer portion, (b) 20-40 weight % of an ethylene-.alpha.-olefin copolymer elastomer, and (c) 20 weight % or less of an inorganic filler, components in the components (a) and (b), which are soluble in p-xylene at a room temperature, having a number-average molecular weight of 4.times.10.sup.4 or more and a weight-average molecular weight of 20.times.10.sup.4 or more.Type: GrantFiled: April 3, 1995Date of Patent: October 24, 1995Assignees: Tonen Chemical Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yoshiharu Saito, Masao Sakaizawa, Kunio Iwanami, Kitsusho Kitano, Michihisa Tasaka, Kenji Kawazu, Shizuo Miyazaki, Takao Nomura, Takeyoshi Nishio, Hisayuki Iwai
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Patent number: 5438091Abstract: A resin composition having excellent paint coatability containing (a) 50-80 weight % of a multi-stage polymerized propylene-ethylene block copolymer consisting essentially of (i) a propylene homopolymer portion, (ii) a propylene-ethylene random copolymer portion, and (iii) an ethylene homopolymer portion, (b) 20-40 weight % of an ethylene-.alpha.-olefin copolymer elastomer, and (c) 20 weight % or less of an inorganic filler, components in the components (a) and (b), which are soluble in p-xylene at a room temperature, having a number-average molecular weight of 4.times.10.sup.4 or more and a weight-average molecular weight of 20.times.10.sup.4 or more.Type: GrantFiled: October 25, 1994Date of Patent: August 1, 1995Assignees: Tonen Chemical Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yoshiharu Saito, Masao Sakaizawa, Kunio Iwanami, Kitsusho Kitano, Michihisa Tasaka, Kenji Kawazu, Shizuo Miyazaki, Takao Nomura, Takeyoshi Nishio, Hisayuki Iwai
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Patent number: 5216054Abstract: A polymer composition comprising resin components comprising (a) 5-95 weight % of a polyamide resin, and (b) 5-95 weight % of polyolefin + unsaturated carboxylic acid-modified polyolefin, and (c) additives comprising the following compounds in amounts per 100 parts by weight of the total composition: (1) 0.1-2 parts by weight of a substituted hydrazine: (2) 0.05-2 parts by weight of a hindered phenol compound; (3) 0.05-0.5 parts by weight of a phosphite or phosphonite; and (4) 0.15-1 parts by weight of a thiodipropionate.Type: GrantFiled: February 27, 1992Date of Patent: June 1, 1993Assignee: Tonen Sekiyukagaku Kabushiki KaishaInventors: Kunio Iwanami, Kissho Kitano, Yukihiko Yagi, Takashi Mikami
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Patent number: 5106564Abstract: Fiber-reinforced polymer compositions containing resin components including (a) 30-90 weight % of polyamide resins, and (b) 10-70 weight % of polyolefins+unsaturated carboxylic acid-modified polyolefins, based on the resin components; and (c) 5-50 parts by weight of glass fibers per 100 parts by weight of the total compositions, a molar ratio of end amino groups in the polyamide resins to carboxyl groups in the modified polyolefins being 10-1000. The compositions have a morphology in which polyolefin domains having an average size of 0.5-5 .mu.m are uniformly dispersed in polyamide matrix phases.Type: GrantFiled: January 4, 1991Date of Patent: April 21, 1992Assignees: Tonen Sekiyukagaku Kabushiki Kaisha, Nippondenso Co., Ltd.Inventors: Kunio Iwanami, Kissho Kitano, Kiyotada Narukawa, Kenichi Aoki, Yukihiko Yagi, Masato Sakuma, Takashi Mikami, Masami Esaki, Fumio Kato, Koji Egashira, Hiroyuki Wakabayashi
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Patent number: 5106893Abstract: A fiber-reinforced polymer composition containing resin components including (a) 30-90 weight % of a polyamide resin, and (b) 10-70 weight % of polyolefin+unsaturated carboxylic acid-modified polyolefin, based on the resin components; and, per 100 parts by weight of the total components, (c) 5-50 parts by weight of glass fibers, and (d) additives including the following set of additives: 0.1-1 parts by weight of N,N'-hexamethylene-bis (3,5-di-tert-butyl-4-hydroxy-hydrocinnamide); 0.1-1 parts by weight of triethylene glycol-bis [3-(3-tert-butyl-5-methyl-4-hydroxyphenyl) propionate]; and 0.1-1 parts by weight of pentaerythrityl-tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]. An alternative set of additives are 0.1-2 parts by weight of N,N'-bis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl] hydrazine; 0.05-0.5 parts by weight of pentaerythrityl-tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]; 0.05-0.5 parts by weight of distearyl-pentaerythritol diphosphite; and 0.Type: GrantFiled: February 7, 1991Date of Patent: April 21, 1992Assignees: Tonen Sekiyukagaku Kabushiki Kaisha, Nippondenso Co., Ltd.Inventors: Kunio Iwanami, Kissho Kitano, Kiyotada Narukawa, Masato Sakuma, Takashi Mikami, Masami Esaki, Koji Egashira, Hiroyuki Wakabayashi, Fumio Kato
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Patent number: 4990550Abstract: Fiber-reinforced polymer compositions containing resin components including (a) 30-90 weight % of polyamide resins, and (b) 10-70 weight % of polyolefins+unsaturated carboxylic acid-modified polyolefins, based on the resin components; and (c) 5-50 parts by weight of glass fibers per 100 parts by weight of the total compositions, a molar ratio of end amino groups in the polyamide resins to carboxyl groups in the modified polyolefins being 10-1000. The compositions have a morphology in which polyolefin domains having an average size of 0.5-5 .mu.m are uniformly dispersed in polyamide matrix phases.Type: GrantFiled: March 20, 1989Date of Patent: February 5, 1991Assignees: Tonen Sekiyukagaku Kabushiki Kaisha, Nippondenso Co., Ltd.Inventors: Kunio Iwanami, Kissho Kitano, Kiyotada Narukawa, Kenichi Aoki, Yukihiko Yagi, Masato Sakuma, Takashi Mikami, Masami Esaki, Fumio Kato, Koji Egashira, Hiroyuki Wakabayashi
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Patent number: 4528329Abstract: A polyolefin product is produced by reacting a polyolefin grafted with a carboxylic acid or an anhydride thereof with a polar polymer containing epoxy groups. The unreacted epoxy groups in the resulting copolymer improves adhesion and compatibility with metals and other resins.Type: GrantFiled: May 2, 1983Date of Patent: July 9, 1985Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Hiroshi Inoue, Tadashi Sezume, Masaaki Isoi, Kunio Iwanami, Kazuo Sei