Patents by Inventor Ryuta Tamiya

Ryuta Tamiya 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: 10591749
    Abstract: Disclosed is a medical device having an elastic modulus of 100 kPa or more and 2,000 kPa or less, a water content of 10% by mass or less, a tensile elongation of 50% or more and 3,000% or less, and a dynamic contact angle (advancing angle) relative to a borate buffer of 80° or less. The present invention can significantly reduce or avoid a phenomenon of adhesion to a surface when contacted with a surface outside or inside the body, which has hitherto been regarded as a problem in a conventional medical device.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 17, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Masataka Nakamura, Rumiko Kitagawa, Ryuta Tamiya
  • Patent number: 10376174
    Abstract: In order to provide an electrode equipped with an insulating wall having excellent patterning properties as well as excellent biocompatibility, there is provided an electrode including, on a substrate, an electrode element; and an insulating wall formed around the electrode element, constituted of a polysiloxane compound (component A) having, per molecule, two or more functional groups selected from the group consisting of a (meth)acryloyl group, a styrenic vinyl group, a vinyl ester group, a maleic acid ester group and a maleimide group, and formed from a polymer obtained by reaction of the functional groups.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: August 13, 2019
    Assignees: TORAY INDUSTRIES, INC.
    Inventors: Takao Someya, Tsuyoshi Sekitani, Kazunori Kuribara, Ryuta Tamiya, Masataka Nakamura
  • 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: 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: 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
  • 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: 20160331261
    Abstract: In order to provide an electrode equipped with an insulating wall having excellent patterning properties as well as excellent biocompatibility, there is provided an electrode including, on a substrate, an electrode element; and an insulating wall formed around the electrode element, constituted of a polysiloxane compound (component A) having, per molecule, two or more functional groups selected from the group consisting of a (meth)acryloyl group, a styrenic vinyl group, a vinyl ester group, a maleic acid ester group and a maleimide group, and formed from a polymer obtained by reaction of the functional groups.
    Type: Application
    Filed: February 5, 2015
    Publication date: November 17, 2016
    Applicants: TORAY INDUSTRIES, INC.
    Inventors: Takao SOMEYA, Tsuyoshi SEKITANI, Kazunori KURIBARA, Ryuta TAMIYA, 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: 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
  • Publication number: 20140296368
    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: June 11, 2014
    Publication date: October 2, 2014
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura
  • Publication number: 20140198294
    Abstract: Disclosed is a medical device having an elastic modulus of 100 kPa or more and 2,000 kPa or less, a water content of 10% by mass or less, a tensile elongation of 50% or more and 3,000% or less, and a dynamic contact angle (advancing angle) relative to a borate buffer of 80° or less. The present invention can significantly reduce or avoid a phenomenon of adhesion to a surface when contacted with a surface outside or inside the body, which has hitherto been regarded as a problem in a conventional medical device.
    Type: Application
    Filed: August 10, 2012
    Publication date: July 17, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Masataka Nakamura, Rumiko Kitagawa, Ryuta Tamiya
  • Publication number: 20120283381
    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: April 18, 2012
    Publication date: November 8, 2012
    Inventors: Ryuta Tamiya, Kazuhiko Fujisawa, Masataka Nakamura