Patents by Inventor Kazuhiko Fujisawa

Kazuhiko Fujisawa 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).

  • Patent number: 10390555
    Abstract: The production process comprises a step (A) in which an alkali-treated tobacco source is heated to make the tobacco source release a flavoring ingredient into a gas phase, a step (B) in which the flavoring ingredient released into the gas phase is brought into contact with a given solvent which is a liquid substance at ordinary temperature, thereby trapping the flavoring ingredient in the given solvent, and a step (C) in which the given solvent is added to a constituent element.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: August 27, 2019
    Assignee: JAPAN TOBACCO INC.
    Inventors: Yoshinori Fujisawa, Takuma Nakano, Kimitaka Uchii, Manabu Takeuchi, Kazuhiko Katayama, Manabu Yamada
  • Patent number: 10240034
    Abstract: The present invention relates to a silicone acrylamide copolymer of high acrylamide monomer content which has transparency and low modulus, employing the following configuration. The copolymer is suitably used for various kinds of medical devices, particularly ophthalmic lenses such as a contact lens, an intraocular lens, an artificial cornea, and is especially suitable for a contact lens. A copolymer comprising (A) a multi-functional (meth)acrylamide monomer having at least one siloxane bond and at least two (meth)acrylamide groups within a molecule and (B) a mono-functional linear silicone (meth)acrylamide monomer.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: March 26, 2019
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura, Thomas L. Maggio, Michelle Carman Turnage, Michael R. Clark
  • Publication number: 20190048117
    Abstract: To obtain a hydrophilic macromonomer mixture which is a highly polymerized hydrophilic macromonomer, has few components not bonded to the polymer chain after polymerization, and is less likely to leaching. Provided is a macromonomer mixture containing macromonomer A being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a polymerization initiator at an end thereof; and macromonomer B being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a chain transfer agent at an end thereof.
    Type: Application
    Filed: October 18, 2018
    Publication date: February 14, 2019
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura
  • Patent number: 10125209
    Abstract: To obtain a hydrophilic macromonomer mixture which is a highly polymerized hydrophilic macromonomer, has few components not bonded to the polymer chain after polymerization, and is less likely to leaching. Provided is a macromonomer mixture containing macromonomer A being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a polymerization initiator at an end thereof; and macromonomer B being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a chain transfer agent at an end thereof.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: November 13, 2018
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura
  • Patent number: 10087274
    Abstract: In order to provide a silicone hydrogel which has high uniformity in polymerization rates of polymerization components used for copolymerization, excellent mechanical characteristics, excellent optical characteristics and good shape recoverability and in order to also provide various medical devices and ocular lenses having an excellent balance among elasticity, wettability and transparency, the present invention provides a silicone hydrogel which has a repeating unit derived from a monofunctional linear silicone (meth)acrylate and a repeating unit derived from a hydrophilic (meth)acrylate, and wherein the content of the repeating units derived from (meth)acrylates is more than 80% by mass.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 2, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Tomohiro Kato, Kazuhiko Fujisawa, Masataka Nakamura
  • Publication number: 20170321051
    Abstract: The present invention relates to a silicone acrylamide copolymer of high acrylamide monomer content which has transparency and low modulus, employing the following configuration. The copolymer is suitably used for various kinds of medical devices, particularly ophthalmic lenses such as a contact lens, an intraocular lens, an artificial cornea, and is especially suitable for a contact lens. A copolymer comprising (A) a multi-functional (meth)acrylamide monomer having at least one siloxane bond and at least two (meth)acrylamide groups within a molecule and (B) a mono-functional linear silicone (meth)acrylamide monomer.
    Type: Application
    Filed: July 24, 2017
    Publication date: November 9, 2017
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura, Thomas L. Maggio, Michelle Carman Turnage, Michael R. Clark
  • Patent number: 9778488
    Abstract: A medical device includes a layer made of an acidic polymer and a basic polymer formed on at least a part of a surface of a water-containing base material, wherein at least one kind of an acidic polymer and a basic polymer forming the acidic polymer or the basic polymer is a polymer having a hydroxy group.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: October 3, 2017
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kazuhiko Fujisawa, Rumiko Kitagawa, Masataka Nakamura
  • Patent number: 9745460
    Abstract: The present invention relates to a silicone acrylamide copolymer of high acrylamide monomer content which has transparency and low modulus, employing the following configuration. The copolymer is suitably used for various kinds of medical devices, particularly ophthalmic lenses such as a contact lens, an intraocular lens, an artificial cornea, and is especially suitable for a contact lens. A copolymer comprising (A) a multi-functional (meth)acrylamide monomer having at least one siloxane bond and at least two (meth)acrylamide groups within a molecule and (B) a mono-functional linear silicone (meth)acrylamide monomer.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 29, 2017
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura, Thomas L. Maggio, Michelle Carman Turnage, Michael R. Clark
  • Publication number: 20170204213
    Abstract: In order to provide a silicone hydrogel which has high uniformity in polymerization rates of polymerization components used for copolymerization, excellent mechanical characteristics, excellent optical characteristics and good shape recoverability and in order to also provide various medical devices and ocular lenses having an excellent balance among elasticity, wettability and transparency, the present invention provides a silicone hydrogel which has a repeating unit derived from a monofunctional linear silicone (meth)acrylate and a repeating unit derived from a hydrophilic (meth)acrylate, and wherein the content of the repeating units derived from (meth)acrylates is more than 80% by mass.
    Type: Application
    Filed: June 16, 2015
    Publication date: July 20, 2017
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Tomohiro KATO, Kazuhiko FUJISAWA, Masataka NAKAMURA
  • Patent number: 9632212
    Abstract: To provide a medical device which is excellent in wettability and lubricity and is also scarcely broken since it is soft, by a medical device in which a layer made of an acidic polymer and a basic polymer is formed on at least a part of a surface of a low water content soft base material, the low water content soft base material containing, as a main component, a copolymer containing a monofunctional monomer component M having one polymerizable functional group and one silicone moiety per molecule.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: April 25, 2017
    Assignee: Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Rumiko Kitagawa, Masataka Nakamura
  • Patent number: 9617423
    Abstract: The present invention relates to macroinitiators comprising at least one hydrophobic segments in a molecule, wherein a molecular weight of the hydrophobic segment is 300 to 1800. The present invention further relates to block copolymers, wetting agent and polymeric materials having the block copolymers of the present invention associated with, which is suitable for medical devices, particularly for ophthalmic devices, including contact lenses, ophthalmic lenses, punctal plugs and artificial corneas.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 11, 2017
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura
  • Publication number: 20160194497
    Abstract: The present invention relates to macroinitiators comprising at least one hydrophobic segments in a molecule, wherein a molecular weight of the hydrophobic segment is 300 to 1800. The present invention further relates to block copolymers, wetting agent and polymeric materials having the block copolymers of the present invention associated with, which is suitable for medical devices, particularly for ophthalmic devices, including contact lenses, ophthalmic lenses, punctal plugs and artificial corneas.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura
  • Patent number: 9377562
    Abstract: A medical device includes a layer made of an acidic polymer and a basic polymer formed on at least a part of a surface of a base material, wherein at least one kind of an acidic polymer and a basic polymer forming the layers made of the acidic polymer and the basic polymer is a multi-component copolymer of three or more components.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: June 28, 2016
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kazuhiko Fujisawa, Rumiko Kitagawa, Masataka Nakamura
  • Patent number: 9345811
    Abstract: A medical antimicrobial composition includes a siloxanyl structure-containing polymer and an ammonium group-containing polymer, which is excellent in transparency, flexibility and mechanical properties, and also excellent in adhesion to a base resin with good mechanical properties, particularly to a silicone resin. The medical antimicrobial composition includes an ammonium group-containing polymer compound (A) dispersed in a siloxanyl structure-containing polymer (B) and a medical device comprising the medical antimicrobial composition.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: May 24, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Masataka Nakamura, Kazuhiko Fujisawa, Tsutomu Goshima
  • Patent number: 9321890
    Abstract: The present invention relates to macroinitiators comprising at least one hydrophobic segments in a molecule, wherein a molecular weight of the hydrophobic segment is 300 to 1800. The present invention further relates to block copolymers, wetting agent and polymeric materials having the block copolymers of the present invention associated with, which is suitable for medical devices, particularly for ophthalmic devices, including contact lenses, ophthalmic lenses, punctal plugs and artificial corneas.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: April 26, 2016
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura
  • Publication number: 20150274854
    Abstract: The present invention relates to a silicone acrylamide copolymer of high acrylamide monomer content which has transparency and low modulus, employing the following configuration. The copolymer is suitably used for various kinds of medical devices, particularly ophthalmic lenses such as a contact lens, an intraocular lens, an artificial cornea, and is especially suitable for a contact lens. A copolymer comprising (A) a multi-functional (meth)acrylamide monomer having at least one siloxane bond and at least two (meth)acrylamide groups within a molecule and (B) a mono-functional linear silicone (meth)acrylamide monomer.
    Type: Application
    Filed: March 27, 2015
    Publication date: October 1, 2015
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura, Thomas L. Maggio, Michelle Carman Turnage, Michael R. Clark
  • Publication number: 20150274855
    Abstract: The present invention relates to copolymers obtained by polymerizing a mono-functional silicone (meth)acrylamide monomer with a non-silicon containing, multi-functional (meth)acrylamide monomer having at least two (meth)acrylamide groups in a molecule. The shortest chain length of an organic group connecting any two (meth)acrylamide groups in the multi-functional (meth)acrylamide monomer is: i) 4 to 20 carbon atoms when every nitrogen atom of the (meth)acrylamide groups has at least one hydrogen atom directly bonded to the nitrogen atom; or ii) 1 to 20 carbon atoms when at least one nitrogen atom of any (meth)acrylamide groups has no hydrogen atom directly bonded to it.
    Type: Application
    Filed: March 27, 2015
    Publication date: October 1, 2015
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura, Thomas L. Maggio, Michelle Carman Turnage, Michael R. Clark
  • Patent number: 9056878
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: June 16, 2015
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota, Douglas G. Vanderlaan
  • Patent number: 9056880
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: June 16, 2015
    Assignees: Johnson & Johnson Vision Care, Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota
  • Patent number: 8921449
    Abstract: In one aspect, the invention relates to hydrolysis-resistant silicone compounds. In particular, disclosed are sterically hindered hydrolysis-resistant silicone compounds and improved purity hydrolysis-resistant silicone compounds. Also disclosed are processes for making hydrolysis-resistant silicone compounds; the products of the disclosed processes; compositions and polymers comprising the disclosed compounds and products of the disclosed processes; and ophthalmic lenses, for example contact lenses, intraocular lenses, artificial cornea, and spectacle lenses, comprising the disclosed compositions, disclosed polymers, disclosed compounds, and products of the disclosed processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: December 30, 2014
    Assignees: Johnson & Johnson Vision Care Inc., Toray Industries, Inc.
    Inventors: Kazuhiko Fujisawa, Masataka Nakamura, Mitsuru Yokota, Douglas G. Vanderlaan