Patents by Inventor Noriaki Suyasu

Noriaki Suyasu 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).

  • Composition
    Patent number: 11578160
    Abstract: Provided is a molded body having excellent heat resistance. A composition containing methyl methacrylate, methyl isobutyrate and methyl acrylate, in which a content of methyl methacrylate is 99.5% by mass or more, a concentration of methyl isobutyrate is 20 ppm by mass to 300 ppm by mass, and a concentration of methyl acrylate is 5 ppm by mass to 200 ppm by mass.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: February 14, 2023
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazuaki Yoshimura, Noriaki Suyasu, Masakazu Sumida, Shoji Inukai
  • COMPOSITION
    Publication number: 20220098344
    Abstract: Provided is a molded body having excellent heat resistance. A composition containing methyl methacrylate, methyl isobutyrate and methyl acrylate, in which a content of methyl methacrylate is 99.5% by mass or more, a concentration of methyl isobutyrate is 20 ppm by mass to 300 ppm by mass, and a concentration of methyl acrylate is 5 ppm by mass to 200 ppm by mass.
    Type: Application
    Filed: September 27, 2021
    Publication date: March 31, 2022
    Inventors: Kazuaki YOSHIMURA, Noriaki SUYASU, Masakazu SUMIDA, Shoji INUKAI
  • Process for producing alkyl methacrylate
    Patent number: 9045406
    Abstract: An object of the present invention is to provide a process for producing methacrylic acid with good productivity over a long period of time.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 2, 2015
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Noriaki Suyasu, Eiichi Shiraishi
  • PROCESS FOR PRODUCING ALKYL METHACRYLATE
    Publication number: 20130261335
    Abstract: An object of the present invention is to provide a process for producing methacrylic acid with good productivity over a long period of time.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 3, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Noriaki SUYASU, Eiichi SHIRAISHI
  • Process for regenerating catalyst
    Patent number: 7612007
    Abstract: A process for regenerating a catalyst consisting of a mixed oxide having molybdenum, bismuth and iron used for preparing an unsaturated aldehyde and/or an unsaturated carboxylic acid by catalytically oxidizing propylene, isobutylene and/or tert.-butanol with molecular oxygen in a gas phase, in which the catalyst is regenerated by thermally treating the deteriorated catalyst in an atmosphere of a gas containing molecular oxygen at a temperature of 200 to 500° C., and then thermally treating the catalyst in the presence of a reducing compound at a temperature of 200 to 500° C.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: November 3, 2009
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Naoki Miura, Koichi Nagai, Noriaki Suyasu
  • Process for regenerating catalyst for preparing unsaturated aldehyde and/or unsaturated carboxylic acid and process for preparing unsaturated aldehyde and/or unsaturated carboxylic acid
    Publication number: 20080004173
    Abstract: A process for regenerating a catalyst consisting of a mixed oxide having molybdenum, bismuth and iron used for preparing an unsaturated aldehyde and/or an unsaturated carboxylic acid by catalytically oxidizing propylene, isobutylene and/or tert.-butanol with molecular oxygen in a gas phase, in which the catalyst is regenerated by thermally treating the deteriorated catalyst in an atmosphere of a gas containing molecular oxygen at a temperature of 200 to 500° C., and then thermally treating the catalyst in the presence of a reducing compound at a temperature of 200 to 500° C.
    Type: Application
    Filed: June 27, 2007
    Publication date: January 3, 2008
    Inventors: Naoki Miura, Koichi Nagai, Noriaki Suyasu