Patents by Inventor Shinichi Kitade

Shinichi Kitade 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).

  • Publication number: 20240358429
    Abstract: A treatment tool includes: a tubular portion including a tubular portion main body having a long tubular shape and an opening section provided in the tubular portion main body, the tubular portion being configured to suck a tissue piece from the opening section; a blade portion provided in a part of an opening edge in the opening section; and a non-blade portion provided in at least a part other than a region where the blade portion is provided in the opening edge, the non-blade portion being configured to slide the tissue piece. The blade portion includes an edge having a smallest sectional area in a cross section of the blade portion taken along a plane including a central axis of the tubular portion main body, and only the edge is located on an imaginary plane obtained by extending an opening surface of the opening section.
    Type: Application
    Filed: April 23, 2024
    Publication date: October 31, 2024
    Applicant: OLYMPUS CORPORATION
    Inventors: Shinichi KITADE, Kazuya NAKABE, Katsushi WATANABE, Soichi IKUMA
  • Publication number: 20230111265
    Abstract: A treatment tool includes a tubular member including an opening and a tubular member main body that has a tubular shape. The tubular member is configured to suction a tissue piece through the opening. The treatment tool includes a blade member provided on an opening edge of the opening.
    Type: Application
    Filed: October 5, 2022
    Publication date: April 13, 2023
    Applicant: OLYMPUS CORPORATION
    Inventors: Shinichi KITADE, Kazuya NAKABE
  • Patent number: 10947373
    Abstract: The present invention relates to a polypropylene resin composition for a microporous film which can reduce the product defect rate due to stabilization of porous formation by stabilizing film formation and also can obtain a film suitably usable for a separator, a filtration membrane, a separation membrane and a filter since the microporous film can be thinned due to high rigidity, and more specifically, relates to a polypropylene resin composition for a microporous film wherein the composition comprises 5 to 30% by weight of polypropylene resin (X) having specific MFR, molecular weight distribution Mw/Mn by GPC, melt tension (MT), branching index g? and mm fraction of the propylene unit triads by 13C-NMR, satisfying specific conditions concerning gels and having a long chain branched structure and 95 to 70% by weight of polypropylene resin (Y) having a specific MFR and excluding the polypropylene resin (X).
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: March 16, 2021
    Assignee: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Satoshi Katsuno, Shinichi Kitade
  • Publication number: 20190161603
    Abstract: The present invention relates to a polypropylene resin composition for a microporous film which can reduce the product defect rate due to stabilization of porous formation by stabilizing film formation and also can obtain a film suitably usable for a separator, a filtration membrane, a separation membrane and a filter since the microporous film can be thinned due to high rigidity, and more specifically, relates to a polypropylene resin composition for a microporous film wherein the composition comprises 5 to 30% by weight of polypropylene resin (X) having specific MFR, molecular weight distribution Mw/Mn by GPC, melt tension (MT), branching index g? and mm fraction of the propylene unit triads by 13C-NMR, satisfying specific conditions concerning gels and having a long chain branched structure and 95 to 70% by weight of polypropylene resin (Y) having a specific MFR and excluding the polypropylene resin (X).
    Type: Application
    Filed: June 15, 2017
    Publication date: May 30, 2019
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Satoshi KATSUNO, Shinichi KITADE
  • Patent number: 9522984
    Abstract: A polypropylene-based resin composition is provided that can provide a foam molding that exhibits an excellent closed cell characteristic and excellent extrusion characteristics, that is light weight and has a rigid feel, and that has an excellent recyclability.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: December 20, 2016
    Assignee: Japan Polypropylene Corporation
    Inventors: Motoki Kaneno, Koji Yamashita, Hiroshi Tsuji, Akihiro Suzuki, Shinichi Kitade, Masaru Aoki, Isamu Terayama
  • Patent number: 9505894
    Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced and includes (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: November 29, 2016
    Assignee: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
  • Patent number: 9284427
    Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: March 15, 2016
    Assignee: Japan Polypropylene Corporation
    Inventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
  • Publication number: 20150044405
    Abstract: A polypropylene-based resin composition is provided that can provide a foam molding that exhibits an excellent closed cell characteristic and excellent extrusion characteristics, that is light weight and has a rigid feel, and that has an excellent recyclability.
    Type: Application
    Filed: October 17, 2012
    Publication date: February 12, 2015
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Motoki Kaneno, Koji Yamashita, Hiroshi Tsuji, Akihiro Suzuki, Shinichi Kitade, Masaru Aoki, Isamu Terayama
  • Publication number: 20150010747
    Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer, said resin (X) having properties (X-i) to (X-iv) and said block copolymer (Y) having properties (Y-i) to (Y-v), and the like.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 8, 2015
    Applicant: Japan Polypropylene Corporation
    Inventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
  • Publication number: 20150004394
    Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer, said resin (X) having properties (X-i) to (X-iv) and said block copolymer (Y) having properties (Y-i) to (Y-v), and the like.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 1, 2015
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
  • Patent number: 8324335
    Abstract: A propylene-based polymer comprising the following component (A) insoluble in p-xylene at 25° C. and component (B) soluble in p-xylene at 25° C., wherein (i) the weight average molecular weight (Mw) measured with GPC is 100,000 to 1,000,000, (ii) the content of the component insoluble in hot p-xylene is 0.3% by weight or lower, and (iii) the degree of strain hardening (? max) in measurement of elongational viscosity is 2.0 or higher; and a method for producing the same, along with a resin composition comprising a propylene-ethylene copolymer (Z) in an amount of 50.0 to 99.9% by weight and a propylene-based polymer (M) in an amount of 0.1 to 50.0% by weight. Component (A): a component (CXIS) insoluble in p-xylene at 25° C., having requirements specified by (A1) to (A5). Component (B): a component (CXS) is soluble in p-xylene at 25° C., having requirements specified by (B1) to (B4).
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: December 4, 2012
    Assignee: Japan Polypropylene Corporation
    Inventors: Masaaki Ito, Hideshi Uchino, Kazuya Sakata, Masaru Aoki, Masato Nakano, Shinichi Kitade
  • Patent number: 7915359
    Abstract: A propylene resin composition which is a three-component material is improved in rigidity, heat resistance, and impact resistance while maintaining a satisfactory balance among these and further improved in low-temperature (about ?30° C.) impact resistance. A propylene resin composition as described in the specification.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: March 29, 2011
    Assignee: Japan Polypropylene Corporation
    Inventors: Shinichi Kitade, Hideshi Uchino, Jun Shinozaki, Kuninori Takahashi, Kenji Masuda
  • Publication number: 20100168323
    Abstract: A propylene-based polymer comprising the following component (A) insoluble in p-xylene at 25° C. and component (B) soluble in p-xylene at 25° C., wherein (i) the weight average molecular weight (Mw) measured with GPC is 100,000 to 1,000,000, (ii) the content of the component insoluble in hot p-xylene is 0.3% by weight or lower, and (iii) the degree of strain hardening (? max) in measurement of elongational viscosity is 2.0 or higher; and a method for producing the same, along with a resin composition comprising a propylene-ethylene copolymer (Z) in an amount of 50.0 to 99.9% by weight and a propylene-based polymer (M) in an amount of 0.1 to 50.0% by weight. Component (A): a component (CXIS) insoluble in p-xylene at 25° C., having requirements specified by (A1) to (A5). Component (B): a component (CXS) is soluble in p-xylene at 25° C., having requirements specified by (B1) to (B4).
    Type: Application
    Filed: November 16, 2007
    Publication date: July 1, 2010
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Masaaki ITO, Hideshi Uchino, Kazuya Sakata, Masaru Aoki, Masato Nakano, Shinichi Kitade
  • Patent number: 7662888
    Abstract: A polypropylene based heat shrinkable film obtained by using a propylene-ethylene block copolymer (A) which satisfies the following requirements (A-i) to (A-iv), and having heat shrinkability imparted by orientation in at least one direction: (A-i) it is a propylene-ethylene block copolymer obtained through sequential polymerization catalyzed by a metallocene catalyst which is composed of 30 to 95 wt % of a propylene homopolymer or propylene-ethylene random copolymer component (A1) having an ethylene content of at most 7 wt % produced in a first step and 70 to 5 wt % of a propylene-ethylene random copolymer component (A2) produced in a second step having an ethylene content higher by 3 to 20 wt % than that of the component (A1); (A-ii) it has a melt flow rate (MFR: 2.16 kg, 230° C.) within a range of 0.1 to 30 g/10 min; (A-iii) a temperature-loss tangent (tan ?) curve obtained by dynamic mechanical analysis (DMA) has a single peak at a temperature of at most 0° C.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: February 16, 2010
    Assignee: Japan Polypropylene Corporation
    Inventors: Gen Kanai, Kuninori Takahashi, Shinichi Kitade, Iku Kouzai
  • Publication number: 20090118414
    Abstract: A propylene resin composition which is a three-component material is improved in rigidity, heat resistance, and impact resistance while maintaining a satisfactory balance among these and further improved in low-temperature (about ?30° C.) impact resistance. A propylene resin composition comprising: 60-95 wt % of a crystalline propylene polymer ingredient (a) comprising a propylene homopolymer ingredient or a copolymer of propylene and up to 3 wt % ethylene or an ?-olefin having 4-20 carbon atoms; and 40-5 wt % of a propylene/ethylene copolymer ingredient (b), wherein the ingredients are polymerized using a metallocene catalyst, and the composition satisfies the following properties i) to iv): i) A melting point obtained by differential scanning calorimetry (DSC) is 156° C. or higher, ii) A proportion of the copolymer ingredient (b) determined by a temperature rising elution fractionation (TREF) fractionating at three levels of temperature of 40° C., 100° C., and 140° C.
    Type: Application
    Filed: September 22, 2006
    Publication date: May 7, 2009
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Shinichi Kitade, Hideshi Uchino, Jun Shinozaki, Kuninori Takahashi, Kenji Masuda
  • Patent number: 7390575
    Abstract: A polyolefin based biaxially oriented multi-layer film having at least one surface layer comprise of the propylene-ethylene random block copolymer; The propylene-ethylene random block copolymer obtained through sequential polymerization catalyzed by a metallocene component which is composed of 30 to 70 wt % of a propylene-ethylene random copolymer component having an ethylene content of 1 to 7 wt % produced in the first step of the polymerization and from 70 to 30 wt % of a low crystallinity or an amorphous propylene-ethylene random copolymer component produced in the second step of the polymerization having an ethylene content of 6 to 15 wt % higher than that of the polymer component obtained in the first step, wherein that shows a single peak at 0° C. or lower in the temperature-loss tangent (tan ?) curve obtained by dynamic mechanical analysis (DMA).
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: June 24, 2008
    Assignee: Japan Polypropylene Corporation
    Inventors: Takao Tayano, Kuninori Takahashi, Iku Kouzai, Shinichi Kitade, Shigeo Mizukami, Koichi Hirayama
  • Publication number: 20060246308
    Abstract: A polypropylene based heat shrinkable film obtained by using a propylene-ethylene block copolymer (A) which satisfies the following requirements (A-i) to (A-iv), and having heat shrinkability imparted by orientation in at least one direction: (A-i) it is a propylene-ethylene block copolymer obtained through sequential polymerization catalyzed by a metallocene catalyst which is composed of 30 to 95 wt % of a propylene homopolymer or propylene-ethylene random copolymer component (A1) having an ethylene content of at most 7 wt % produced in a first step and 70 to 5 wt % of a propylene-ethylene random copolymer component (A2) produced in a second step having an ethylene content higher by 3 to 20 wt % than that of the component (A1); (A-ii) it has a melt flow rate (MFR: 2.16 kg, 230° C.) within a range of 0.1 to 30 g/10 min; (A-iii) a temperature-loss tangent (tan ?) curve obtained by dynamic mechanical analysis (DMA) has a single peak at a temperature of at most 0° C.
    Type: Application
    Filed: April 25, 2006
    Publication date: November 2, 2006
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Gen Kanai, Kuninori Takahashi, Shinichi Kitade, Iku Kouzai
  • Publication number: 20050113517
    Abstract: A polyolefin based biaxially oriented multi-layer film having at least one surface layer comprise of the propylene-ethylene random block copolymer; The propylene-ethylene random block copolymer obtained through sequential polymerization catalyzed by a metallocene component which is composed of 30 to 70 wt % of a propylene-ethylene random copolymer component having an ethylene content of 1 to 7 wt % produced in the first step of the polymerization and from 70 to 30 wt % of a low crystallinity or an amorphous propylene-ethylene random copolymer component produced in the second step of the polymerization having an ethylene content of 6 to 15 wt % higher than that of the polymer component obtained in the first step, wherein that shows a single peak at 0° C. or lower in the temperature-loss tangent (tan?) curve obtained by dynamic mechanical analysis (DMA).
    Type: Application
    Filed: October 18, 2004
    Publication date: May 26, 2005
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Takao Tayano, Kuninori Takahashi, Iku Kouzai, Shinichi Kitade, Shigeo Mizukami, Koichi Hirayama