Patents by Inventor Katsuyuki Yoshikawa

Katsuyuki Yoshikawa 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: 20240122806
    Abstract: The present invention is a container multilayered body (1, 2) that is used to form a container, having an innermost layer (3) made of a cyclic polyolefin, an intermediate layer (4) that is formed so as to be adjacent to the innermost layer (3) and contains a linear low-density polyethylene produced using a single-site catalyst as a main component, and an outer layer (5) made of one of a random polypropylene produced using a single-site catalyst or a polypropylene containing an elastomer.
    Type: Application
    Filed: February 22, 2022
    Publication date: April 18, 2024
    Inventors: Katsuyuki YOSHIKAWA, Ryosuke MIYAWAKI
  • Patent number: 9510996
    Abstract: Disclosed is a multi-layer tube for medical use, the tube being characterized by having: an outer layer including a resin material that contains high-density polyethylene, and an inner layer including a resin material that contains random polypropylene and/or block polypropylene. Also disclosed a medical infusion bag provided with the multi-layer tube.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: December 6, 2016
    Assignee: Hosokawa Yoko Co., Ltd.
    Inventor: Katsuyuki Yoshikawa
  • Publication number: 20160009455
    Abstract: Disclosed is a bag comprising a bag-shaped container body which is made of a flexible film, and a spout tube which allows the inside of the container body to communicate with the outside the container body, wherein the container body comprises: a cylindrical barrel portion; a first sealing part which is formed at a lower end of the barrel portion by matching and sealing together inner surfaces of the film constituting the container body; and a flat bottom face part including an upper end edge of the first sealing part; wherein the spout tube is interposed between the films that are matched at the first sealing part of the bottom face part; and wherein the first sealing part and the spout tube are disposed in a plane which is approximately parallel to the flat bottom face part.
    Type: Application
    Filed: February 26, 2014
    Publication date: January 14, 2016
    Inventors: Hiroo NAKANO, Katsuyuki YOSHIKAWA
  • Publication number: 20130153448
    Abstract: The present invention is a medical drug solution container (13) which is formed of a plastic film including seal layers.
    Type: Application
    Filed: August 25, 2011
    Publication date: June 20, 2013
    Applicant: HOSOKAWA YOKO CO., LTD.
    Inventor: Katsuyuki Yoshikawa
  • Publication number: 20130123739
    Abstract: Disclosed is a multi-layer tube for medical use, the tube being characterized by having: an outer layer including a resin material that contains high-density polyethylene, and an inner layer including a resin material that contains random polypropylene and/or block polypropylene. Also disclosed a medical infusion bag provided with the multi-layer tube.
    Type: Application
    Filed: July 27, 2011
    Publication date: May 16, 2013
    Applicant: HOSOKAWA YOKO CO LTD
    Inventor: Katsuyuki Yoshikawa
  • Patent number: 8157783
    Abstract: In order to provide a medical liquid container which allows for no forgetful failure to open the partition wall and can realize simple and easy sterilization of the liquid medicament bag and thereby decrease the production cost, the present invention provides a medical liquid container having a plurality of communicatably partitioned medical liquid-housing chambers and a discharge reserve chamber having formed therein a discharge port for a liquid medicament, the medical liquid container comprising liquidtightly partitioning portion for liquidtightly separating said liquid medicament-housing chambers from each other, and non-liquidtightly partitioning portion for non-liquidtightly separating between at least one of said liquid medicament-housing chambers and said discharge reserve chamber.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: April 17, 2012
    Assignee: Hosokawa Yoko Co., Ltd.
    Inventor: Katsuyuki Yoshikawa
  • Publication number: 20100269972
    Abstract: The present invention has an object to provide an infusion container with multiple chambers, where the peel strength of the boundary portion between one and another of multiple medicament chambers is stabilized irrespective of the construction material and structure of the film. The present invention provides an infusion container 10 with multiple chambers, which is formed from a thermoplastic resin film and has a plurality of medicament chambers 11 and 12 for housing medicaments, wherein the medicaments chambers 11 and 12 are liquid-tightly sealed by a peelable weak seal part 15, the weak seal part 15 is formed to have a plurality of melt-bonding parts different in the melt-bonding strength, the strong melt-bonding part having a largest melt-bonding strength among these melt-bonding parts is dispersed and distributed in the weak seal part 15, and the total occupied area of the strong melt-bonding part is less than 25% of the area of the weak seal part 15.
    Type: Application
    Filed: July 2, 2010
    Publication date: October 28, 2010
    Applicant: HOSOKAWA YOKO CO., LTD.
    Inventors: Toshiharu IWASAKI, Masataka KOTANI, Kiyokazu ISHIWATARI, Katsuyuki YOSHIKAWA
  • Patent number: 7789852
    Abstract: To provide a medical liquid container which is free from sealing failure in the seal portion at the peripheral edge of the liquid medicament-housing chamber and also free from deterioration of a medicament housed in a small amount; and a preparation-containing medical liquid container. A secondary liquid medicament-housing chamber 12 is connected to one end of a primary liquid medicament-housing chamber 11. This secondary liquid medicament-housing chamber 12 is unseparably fixed to the primary liquid medicament-housing chamber 11 at a connection part 14. The secondary liquid medicament-housing chamber 12 has a bulge part 15 bulged such that the internal medicament-housing space before housing a second medicament is larger than the volume of the housed second medicament.
    Type: Grant
    Filed: November 25, 2005
    Date of Patent: September 7, 2010
    Assignee: Hosokawa Yoko Co., Ltd.
    Inventors: Katsuyuki Yoshikawa, Manabu Nakamura
  • Patent number: 7776414
    Abstract: The present invention has an object to provide an infusion container with multiple chambers, where the peel strength of the boundary portion between one and another of multiple medicament chambers is stabilized irrespective of the construction material and structure of the film. The present invention provides an infusion container 10 with multiple chambers, which is formed from a thermoplastic resin film and has a plurality of medicament chambers 11 and 12 for housing medicaments, wherein the medicaments chambers 11 and 12 are liquid-tightly sealed by a peelable weak seal part 15, the weak seal part 15 is formed to have a plurality of melt-bonding parts different in the melt-bonding strength, the strong melt-bonding part having a largest melt-bonding strength among these melt-bonding parts is dispersed and distributed in the weak seal part 15, and the total occupied area of the strong melt-bonding part is less than 25% of the area of the weak seal part 15.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: August 17, 2010
    Assignee: Hosokawa Yoko Co., Ltd.
    Inventors: Toshiharu Iwasaki, Masataka Kotani, Kiyokazu Ishiwatari, Katsuyuki Yoshikawa
  • Publication number: 20080255535
    Abstract: In order to provide a medical liquid container which allows for no forgetful failure to open the partition wall and can realize simple and easy sterilization of the liquid medicament bag and thereby decrease the production cost, the present invention provides a medical liquid container having a plurality of communicatably partitioned medical liquid-housing chambers and a discharge reserve chamber having formed therein a discharge port for a liquid medicament, the medical liquid container comprising liquidtightly partitioning portion for liquidtightly separating said liquid medicament-housing chambers from each other, and non-liquidtightly partitioning portion for non-liquidtightly separating between at least one of said liquid medicament-housing chambers and said discharge reserve chamber.
    Type: Application
    Filed: May 31, 2005
    Publication date: October 16, 2008
    Inventor: Katsuyuki Yoshikawa
  • Publication number: 20070299391
    Abstract: To provide a medical liquid container which is free from sealing failure in the seal portion at the peripheral edge of the liquid medicament-housing chamber and also free from deterioration of a medicament housed in a small amount; and a preparation-containing medical liquid container. A secondary liquid medicament-housing chamber 12 is connected to one end of a primary liquid medicament-housing chamber 11. This secondary liquid medicament-housing chamber 12 is unseparably fixed to the primary liquid medicament-housing chamber 11 at a connection part 14. The secondary liquid medicament-housing chamber 12 has a bulge part 15 bulged such that the internal medicament-housing space before housing a second medicament is larger than the volume of the housed second medicament.
    Type: Application
    Filed: November 25, 2005
    Publication date: December 27, 2007
    Applicant: HOSOKAWA YOKO CO., LTD.
    Inventors: Katsuyuki Yoshikawa, Manabu Nakamura
  • Publication number: 20070122577
    Abstract: One of the objects of the present invention is to provide a molded article excellent in all of transparency, impact resistance, flexibility and blocking resistance. The present invention provides the polypropylene-base molded article of the present invention is a single-layer or multilayer molded article having a layer comprising a thermoplastic resin composition containing a polypropylene resin composition (A) satisfying the following requirements and an ethylene-base copolymer (B) comprising an ethylene and at least one ?-olefin having 4 or more carbon atoms.
    Type: Application
    Filed: September 21, 2004
    Publication date: May 31, 2007
    Applicant: Showa Denko Plastic Products Co., Ltd.
    Inventors: Toshiharu Iwasaki, Masataka Kotani, Katsuyuki Yoshikawa
  • Publication number: 20050221034
    Abstract: The present invention has an object to provide an infusion container with multiple chambers, where the peel strength of the boundary portion between one and another of multiple medicament chambers is stabilized irrespective of the construction material and structure of the film. The present invention provides an infusion container 10 with multiple chambers, which is formed from a thermoplastic resin film and has a plurality of medicament chambers 11 and 12 for housing medicaments, wherein the medicaments chambers 11 and 12 are liquid-tightly sealed by a peelable weak seal part 15, the weak seal part 15 is formed to have a plurality of melt-bonding parts different in the melt-bonding strength, the strong melt-bonding part having a largest melt-bonding strength among these melt-bonding parts is dispersed and distributed in the weak seal part 15, and the total occupied area of the strong melt-bonding part is less than 25% of the area of the weak seal part 15.
    Type: Application
    Filed: March 27, 2003
    Publication date: October 6, 2005
    Inventors: Toshiharu Iwasaki, Masataka Kotani, Kiyokazu Ishiwatari, Katsuyuki Yoshikawa
  • Patent number: 6144690
    Abstract: The present invention relates to a melting method by which the melting raw materials having a variety of configurations are collectively melted to enable the composition to be adjusted in the melt, and a melting apparatus and tapping method by which tapping is readily controlled, wherein the raw materials are melted by flowing an electric current satisfying the frequency range defined by the equation below using a crucible with an inner diameter of 400 mm or more in melting using a cold crucible induction melting apparatus, the melt being tapped through a tapping nozzle provided at the bottom of the crucible and equipped with a tapping coil wound around the circumference of the nozzle:7.8.times.2.times.log(D).ltoreq.log(F).ltoreq.8.7-2.times.log(D)(wherein F denotes the frequency of a power supply and D denotes the inner diameter (mm) of the crucible).
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: November 7, 2000
    Assignee: Kabushiki Kaishi Kobe Seiko Sho
    Inventors: Tatsuhiko Kusamichi, Koichi Sakamoto, Hitoshi Ishida, Shingo Ninagawa, Motohiro Nagao, Katsuyuki Yoshikawa
  • Patent number: 4822414
    Abstract: Al-based alloys comprising predetermined amounts of Cr and Ti with the balance being Al and inevitable impurities. The alloys are made by powder metallurgy by which the additive elements are finely dispersed in an Al matrix. The alloys may further comprise up to 5 wt. %. of Fe.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: April 18, 1989
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Katsuyuki Yoshikawa, Hidetoshi Inoue, Tsukasa Shiomi, Shojiro Oie, Mutsumi Abe