Patents by Inventor Taichi Sawaguchi

Taichi Sawaguchi 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: 20210363325
    Abstract: A method for handling a sample of a biochemical substance with a biochemical tool is provided. The method comprises a step of bringing the sample of the biochemical substance into contact with the biochemical tool. The sample of a biochemical substance includes nucleic acids. The biochemical tool comprises a part configured to contact the sample of the biochemical substance, the part being made of a resin composition containing at least one cycloolefin polymer selected from the group consisting of a copolymer of a cycloolefin and a chain olefin, a ring-opened polymer of a cycloolefin, and a hydrogenated product of a ring-opened polymer of a cycloolefin, and an antioxidant, the resin composition comprising 0.01 parts by mass or more and 0.7 parts by mass or less of the antioxidant relative to 100 parts by mass of the cycloolefin polymer.
    Type: Application
    Filed: August 4, 2021
    Publication date: November 25, 2021
    Applicant: ZEON CORPORATION
    Inventors: Taichi SAWAGUCHI, Satoru ADACHI
  • Patent number: 11135767
    Abstract: The present invention is a three-dimensional modeling material containing an alicyclic structure-containing polymer and having a void fraction of 10 vol % or lower, a method for producing the three-dimensional modeling material, and a resin formed article obtained by a thermal melting lamination method using the three-dimensional modeling material. Though the present invention, there are provided a three-dimensional modeling material capable of obtaining a resin formed article having little warp and excellent in impact resistance and appearance, a production method therefor, and a resin formed article formed by using the three-dimensional modeling material.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: October 5, 2021
    Assignee: ZEON CORPORATION
    Inventor: Taichi Sawaguchi
  • Publication number: 20210292402
    Abstract: Provided is a pre-filled syringe that can inhibit protein aggregation in a protein solution formulation while also reducing the produced amount of a decomposition product of a non-ionic surfactant after long-term storage. The pre-filled syringe includes: a barrel formed of a resin containing a hydrogenated cycloolefin ring-opened polymer and/or a copolymer of a cycloolefin and a chain olefin; a sealing member sealing a nozzle of the barrel; a gasket housed inside the barrel; and a plunger performing a movement operation of the gasket, and contains a protein solution formulation in a space defined by the sealing member, the gasket, and a region that is part of an inner wall surface of the barrel. The protein solution formulation has a non-ionic surfactant concentration of more than 0 mg/mL and less than 0.05 mg/mL.
    Type: Application
    Filed: July 24, 2019
    Publication date: September 23, 2021
    Applicant: ZEON CORPORATION
    Inventor: Taichi SAWAGUCHI
  • Publication number: 20210260297
    Abstract: Provided is a pre-filled syringe that can inhibit protein aggregation after long-term storage even when filled with a protein solution formulation having a low non-ionic surfactant concentration. The pre-filled syringe includes: a barrel formed of a resin containing a hydrogenated cycloolefin ring-opened polymer and/or a copolymer of a cycloolefin and a chain olefin; a sealing member sealing a nozzle of the barrel; a gasket housed inside the barrel; and a plunger performing a movement operation of the gasket, and contains a protein solution formulation in a space defined by the sealing member, the gasket, and a region that is part of an inner wall surface of the barrel. The region that is part of the inner wall surface has a water contact angle of 90° or more. The protein solution formulation has a non-ionic surfactant concentration of 0 mg/mL to 0.01 mg/mL.
    Type: Application
    Filed: July 24, 2019
    Publication date: August 26, 2021
    Applicant: ZEON CORPORATION
    Inventor: Taichi SAWAGUCHI
  • Publication number: 20200277469
    Abstract: It is an object of the present disclosure to provide a biochemical tool capable of satisfactorily reducing absorption of a biochemical substance to a surface contacting a sample of the biochemical substance. A biochemical tool configured to contact a sample of a biochemical substance includes a part configured to contact the sample of the biochemical substance, the part being made of a resin composition containing at least one cycloolefin polymer selected from the group consisting of a copolymer of a cycloolefin and a chain olefin, a ring-opened polymer of a cycloolefin, and a hydrogenated product of a ring-opened polymer of a cycloolefin, and an antioxidant, the resin composition including 0.01 parts by mass or more and 0.7 parts by mass or less of the antioxidant relative to 100 parts by mass of the cycloolefin polymer.
    Type: Application
    Filed: September 6, 2018
    Publication date: September 3, 2020
    Applicant: ZEON CORPORATION
    Inventors: Taichi SAWAGUCHI, Satoru ADACHI
  • Publication number: 20200094249
    Abstract: Disclosed is method of manufacturing a microchannel chip by joining together a resin channel substrate having microchannels formed on at least one side thereof and a resin lid substrate, the method including: a step (A) wherein surface modification treatment is applied on joining surfaces of the channel substrate and the lid substrate; and a step (B) wherein, after the step (A), the joining surfaces of the channel substrate and the lid substrate are mated and the channel substrate and the lid substrate are pressurized under heating via a fluid or an elastic body having a durometer hardness of E20 or less.
    Type: Application
    Filed: March 14, 2018
    Publication date: March 26, 2020
    Applicant: ZEON CORPORATION
    Inventors: Daido CHIBA, Kunihito ARAI, Taichi SAWAGUCHI, Mitsukazu AIZAWA, Noriyuki ARITOME
  • Patent number: 10246582
    Abstract: The present invention is a resin composition comprising a cycloolefin resin and at least two hydrogenated styrene-based thermoplastic elastomers, wherein a content of the cycloolefin resin is 50 to 90 wt % based on a total amount of the cycloolefin resin and the hydrogenated styrene-based thermoplastic elastomers, and a melt volume rate of the resin composition at 260° C. is higher than that of the cycloolefin resin at 260° C., and a resin formed article. One aspect of the invention provides a resin composition that exhibits excellent transparency, impact resistance and melt fluidity, as well as a resin formed article obtained by forming this resin composition. The resin formed article of the present invention is preferably used as a drug container, a medical instrument or the like, since it exhibits excellent transparency and impact resistance.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: April 2, 2019
    Assignee: ZEON CORPORATION
    Inventors: Taichi Sawaguchi, Nozomi Yabuki
  • Publication number: 20180370126
    Abstract: The present invention is a three-dimensional modeling material containing an alicyclic structure-containing polymer and having a void fraction of 10 vol % or lower, a method for producing the three-dimensional modeling material, and a resin formed article obtained by a thermal melting lamination method using the three-dimensional modeling material. Though the present invention, there are provided a three-dimensional modeling material capable of obtaining a resin formed article having little warp and excellent in impact resistance and appearance, a production method therefor, and a resin formed article formed by using the three-dimensional modeling material.
    Type: Application
    Filed: December 26, 2016
    Publication date: December 27, 2018
    Applicant: ZEON CORPORATION
    Inventor: Taichi SAWAGUCHI
  • Publication number: 20180188420
    Abstract: The invention is a resin composition comprising an alicyclic-structure-containing polymer, a hindered-phenol-based antioxidant and a hindered amine compound, wherein the hindered-phenol-based antioxidant is a compound having a group represented by the specific formula, the hindered amine compound is a compound having a group represented by the specific formula in its molecule, a content of the hindered-phenol-based antioxidant is 0.1 to 2.0 parts by weight based on 100 parts by weight of the alicyclic-structure-containing polymer, and a content of the hindered amine compound is more than 0 to 1.0 part by weight based on 100 parts by weight of the alicyclic-structure-containing polymer, and a resin formed article, and an optical member. One aspect of the invention provides a resin composition which is hardly burned during forming, has excellent long-term thermal yellowing resistance and also suppresses adhesion of foreign matters due to charge, a resin formed article, and an optical member.
    Type: Application
    Filed: March 30, 2016
    Publication date: July 5, 2018
    Applicant: ZEON CORPORATION
    Inventors: Akira FURUKO, Ayumi SATO, Taichi SAWAGUCHI, Kensaku FUJII, Takashi HOUKAWA
  • Publication number: 20180105689
    Abstract: Provided is a resin composition comprising 50 to 80 wt % of a norbornene-based polymer, and 20 to 50 wt % of a hydrogenated styrene-based thermoplastic elastomer, a content of a low-molecular-weight component having a molecular weight of 1000 or less in the resin composition being 3 wt % or less, in which the hydrogenated styrene-based thermoplastic elastomer is an aromatic vinyl-conjugated diene block copolymer having a styrene content of 40 wt % or more, or a block copolymer that includes an aromatic vinyl compound-based polymer block and an isobutylene-based polymer block having a styrene content of 15 wt % or more. Also, a medical drug container that shows very low protein adsorption with the passage of time is produced using such a resin composition.
    Type: Application
    Filed: December 18, 2017
    Publication date: April 19, 2018
    Applicant: ZEON CORPORATION
    Inventors: Taichi SAWAGUCHI, Satoshi ADACHI, Shinsuke MIYAZAWA, Nozomi YABUKI
  • Publication number: 20180030260
    Abstract: The present invention is a resin composition comprising a cycloolefin resin and at least two hydrogenated styrene-based thermoplastic elastomers, wherein a content of the cycloolefin resin is 50 to 90 wt % based on a total amount of the cycloolefin resin and the hydrogenated styrene-based thermoplastic elastomers, and a melt volume rate of the resin composition at 260° C. is higher than that of the cycloolefin resin at 260° C., and a resin formed article. One aspect of the invention provides a resin composition that exhibits excellent transparency, impact resistance and melt fluidity, as well as a resin formed article obtained by forming this resin composition. The resin formed article of the present invention is preferably used as a drug container, a medical instrument or the like, since it exhibits excellent transparency and impact resistance.
    Type: Application
    Filed: March 3, 2016
    Publication date: February 1, 2018
    Applicant: ZEON CORPORATION
    Inventors: Taichi SAWAGUCHI, Nozomi YABUKI
  • Publication number: 20170218191
    Abstract: The present invention pertains to a resin formed article obtained by forming a resin composition that comprises a cycloolefin resin and a styrene-based thermoplastic elastomer, the styrene-based thermoplastic elastomer having a weight average molecular weight of 20,000 to 150,000, and having a difference in refractive index (?nD) of more than ?0.002 to less than +0.002 with respect to the cycloolefin resin, the resin composition having a residual ratio of 0.10 wt % or less when analyzed based on the residue on ignition test method specified in the Japanese Pharmacopeia, the resin composition having a light transmittance (optical path length: 3 mm) of 55% or more with respect to light having a wavelength of 450 nm when the resin composition is formed in a shape of a sheet having a thickness of 3.0 mm, and subjected to light transmittance measurement, and the resin composition having a Charpy impact strength of 5 to 40 kJ/m2 when the resin composition is formed to have a thickness of 4.0 mm, a length of 80.
    Type: Application
    Filed: July 23, 2015
    Publication date: August 3, 2017
    Applicant: ZEON CORPORATION
    Inventors: Nozomi YABUKI, Taichi SAWAGUCHI
  • Publication number: 20150322256
    Abstract: A medicine container which absorbs very little protein over time is manufactured using a resin composition including 50 to 99 wt % of a norbornene-based polymer, and 1 to 50 wt % of a hydrogenated styrene-based thermoplastic elastomer, a content of a low-molecular-weight component having a weight average molecular weight of 1000 or less in the resin composition being 3 wt % or less.
    Type: Application
    Filed: November 29, 2013
    Publication date: November 12, 2015
    Applicant: ZEON CORPORATION
    Inventors: Taichi SAWAGUCHI, Satoshi ADACHI, Shinsuke MIYAZAWA, Nozomi YABUKI
  • Publication number: 20090118400
    Abstract: A resin composition comprising alicyclic structure-containing polymer such as additional copolymer with monomer having norbornene structure and ethylene, hydrogenated product of ring-opening polymer with monomer having norbornene structure, and aromatic ring-hydrogenated product of copolymer with styrene and isoprene; and piperidine derivatives such as N,N?-bis(2,2,6,6-tetramethyl-4-piperidyl)-N,N?-diformyl-hexamethylenediamine and 4-(formyl amino)-2,2,6,6-tetramethyl piperidine.
    Type: Application
    Filed: July 3, 2006
    Publication date: May 7, 2009
    Applicant: Zeon Corporation
    Inventor: Taichi Sawaguchi
  • Patent number: 7501465
    Abstract: A resin composition includes an alicyclic structure-containing polymer; a hindered amine compound; and a releasing agent, wherein the releasing agent and the alicyclic structure-containing polymer satisfy the following relationship: 10?|s1?s2|?0.8 [(MPa)0.5], wherein s1 represents a solubility parameter of the releasing agent, and s2 represents a solubility parameter of the alicyclic structure-containing polymer. The resin composition can be used as optical materials, such as a lens, a diffraction grating, and a prism, especially in the field of using blue laser, and has excellent releasability, transparence and colorless property as well as excellent resistance to laser.
    Type: Grant
    Filed: January 17, 2005
    Date of Patent: March 10, 2009
    Assignee: Zeon Corporation
    Inventors: Taichi Sawaguchi, Koji Minami
  • Publication number: 20070158623
    Abstract: A resin composition includes an alicyclic structure-containing polymer; a hindered amine compound; and a releasing agent, wherein the releasing agent and the alicyclic structure-containing polymer satisfy the following relationship: 10?|s1?s21?0.8 [(MPa)0.5], wherein s1 represents a solubility parameter of the releasing agent, and s2 represents a solubility parameter of the alicyclic structure-containing polymer. The resin composition can be used as optical materials, such as a lens, a diffraction grating, and a prism, especially in the field of using blue laser, and has excellent releasability, transparence and colorless property as well as excellent resistance to laser.
    Type: Application
    Filed: January 17, 2005
    Publication date: July 12, 2007
    Applicant: Zeon Corporation
    Inventors: Taichi Sawaguchi, Koji Minami
  • Publication number: 20060199015
    Abstract: A transparent shaped article comprised of a resin composition containing an alicyclic structure-containing polymer and a hindered amine compound, the hindered amine compound having (1) a 400 nm light transmittance measured by a 10 mm light path cell in a 5 wt % chloroform solution of 90% or more and (2) a molecular weight of 1500 or more. According to the present invention, it is possible to provide a transparent shaped article free from ablation and clouding of the surface of the shaped article upon exposure by short wavelength light such as that of a blue laser of a wavelength of 350 nm to 530 nm and able to keep stable transparency against exposure of short wavelength light such as that of a blue laser.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 7, 2006
    Applicant: Zeon Corporation
    Inventor: Taichi Sawaguchi