Patents by Inventor Masato Kameda

Masato Kameda 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).

  • Alkylene oxide-modified dipentaerythritol (meth)acrylate and reactive composition containing same
    Patent number: 10344112
    Abstract: An alkylene oxide-modified polyfunctional (meth)acrylate is provided wherein the problems according to high crystallinity or high viscosity are improved, and the photosensitivity, etc. is enhanced. The compound has a structure represented by the following formula (I), provided that in the formula (I), R represents a substituent represented by the formula (II); AO represents one member or two or more members selected from alkylene oxide units represented by —CH2CH2O—, —CH2CH(CH3)O—, —CH2CH2CH2CH2O— and —CH2CH(C2H5)O—; l indicating the average polymerization degree of the added alkylene oxide is 0<l?5; the average value of m is more than 0 and 6 or less; each of the average values of n and o is from 0 to 6, the total value of m, n and o is 6, and in the formula (II), R2 represents a hydrogen atom or a methyl group.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: July 9, 2019
    Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.
    Inventors: Naohiro Takamura, Masato Kameda, Manabu Kikuta, Teruaki Sugahara
  • Urethane acrylate, and reactive composition containing same
    Patent number: 9206117
    Abstract: The present invention is directed to a urethane acrylate containing a reaction product of an alkylene oxide-modified dipentaerythritol (meth)acrylate.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: December 8, 2015
    Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.
    Inventors: Naohiro Takamura, Masato Kameda
  • URETHANE ACRYLATE, AND REACTIVE COMPOSITION CONTAINING SAME
    Publication number: 20150225338
    Abstract: The present invention is directed to a urethane acrylate containing a reaction product of an alkylene oxide-modified dipentaerythritol (meth)acrylate.
    Type: Application
    Filed: October 10, 2013
    Publication date: August 13, 2015
    Inventors: Naohiro Takamura, Masato Kameda
  • ALKYLENE OXIDE-MODIFIED DIPENTAERYTHRITOL (METH)ACRYLATE AND REACTIVE COMPOSITION CONTAINING SAME
    Publication number: 20150038662
    Abstract: An alkylene oxide-modified polyfunctional (meth)acrylate is provided wherein the problems according to high crystallinity or high viscosity are improved, and the photosensitivity, etc. is enhanced. The compound has a structure represented by the following formula (I), provided that in the formula (I), R represents a substituent represented by the formula (II); AO represents one member or two or more members selected from alkylene oxide units represented by —CH2CH2O—, —CH2CH(CH3)O—, —CH2CH2CH2CH2O— and —CH2CH(C2H5)O—; l indicating the average polymerization degree of the added alkylene oxide is 0<l?5; the average value of m is more than 0 and 6 or less; each of the average values of n and o is from 0 to 6, the total value of m, n and o is 6, and in the formula (II), R2 represents a hydrogen atom or a methyl group.
    Type: Application
    Filed: February 19, 2013
    Publication date: February 5, 2015
    Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.
    Inventors: Naohiro Takamura, Masato Kameda, Manabu Kikuta, Teruaki Sugahara