Patents by Inventor Keiichiro Arai

Keiichiro Arai 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).

  • Agent for improving ocular subjective symptoms and method thereof
    Patent number: 11779593
    Abstract: Provided is an agent for improving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: October 10, 2023
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • AGENT FOR IMPROVING OCULAR SUBJECTIVE SYMPTOMS AND METHOD THEREOF
    Publication number: 20220105125
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Application
    Filed: October 25, 2021
    Publication date: April 7, 2022
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Masamichi YAMADA, Chiyo SAKENAGA, Keiichiro ARAI, Kazutaka YAMAMOTO
  • Agent for improving ocular subjective symptoms and method thereof
    Patent number: 11185558
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: November 30, 2021
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • Agent for improving ocular subjective symptoms and method thereof
    Patent number: 11147831
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: October 19, 2021
    Assignee: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • AGENT FOR IMPROVING OCULAR SUBJECTIVE SYMPTOMS AND METHOD THEREOF
    Publication number: 20200338113
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 29, 2020
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Masamichi YAMADA, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • AGENT FOR IMPROVING OCULAR SUBJECTIVE SYMPTOMS AND METHOD THEREOF
    Publication number: 20200330503
    Abstract: Provided is an agent for proving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 22, 2020
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai, Kazutaka Yamamoto
  • AGENT TO BE APPLIED TO OPHTHALMIC DEVICE
    Publication number: 20200121712
    Abstract: Provided is a preparation to be applied to an ophthalmic device comprising a cinnamic acid derivative, the application of which to the ophthalmic device can ameliorate symptoms on the ocular surface or prevent damage on the ocular surface.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Applicant: SEIKAGAKU CORPORATION
    Inventor: Keiichiro ARAI
  • AGENT TO BE APPLIED TO OPHTHALMIC DEVICE
    Publication number: 20190008889
    Abstract: Provided is a preparation to be applied to an ophthalmic device comprising a cinnamic acid derivative, the application of which to the ophthalmic device can ameliorate symptoms on the ocular surface or prevent damage on the ocular surface.
    Type: Application
    Filed: August 19, 2016
    Publication date: January 10, 2019
    Applicant: Seikagaku Corporation
    Inventor: Keiichiro Arai
  • AGENT FOR IMPROVING OCULAR SUBJECTIVE SYMPTOMS AND METHOD THEREOF
    Publication number: 20170348347
    Abstract: Provided is an agent for improving human ocular subjective symptoms containing hyaluronic acid having an aminoalkyl cinnamate covalently bonded thereto.
    Type: Application
    Filed: December 25, 2015
    Publication date: December 7, 2017
    Applicant: Seikagaku Corporation
    Inventors: Masamichi Yamada, Chiyo Sakenaga, Keiichiro Arai