Patents by Inventor Norioki Kawasaki

Norioki Kawasaki 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).

  • 2-pyrrolidone polymer or copolymer having modified physical properties, and manufacturing method for same
    Patent number: 9238713
    Abstract: Disclosed is a 2-pyrrolidone polymer or copolymer having optionally substituted methylol groups, and a process for producing the 2-pyrrolidone polymer or copolymer having methylol groups, the process comprising reacting a 2-pyrrolidone polymer or copolymer with an aldehyde.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: January 19, 2016
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Norioki Kawasaki, Atsuyoshi Nakayama, Naoko Yamano
  • BIODEGRADABLE POLYMER WITH CONTROLLED BIODEGRADABILITY
    Publication number: 20140275439
    Abstract: Disclosed is a biodegradable polymer comprising an optionally substituted aliphatic hydrocarbon group having 5 or more carbon atoms at at least one terminal of the polymer chain, wherein the biodegradable polymer has a weight-average molecular weight of not less than 35,000 when the biodegradable polymer has a 2-pyrrolidone polymer or copolymer as its main chain and stearic acid at the terminal of the polymer chain; a molded article comprising the biodegradable polymer; and a method for controlling biodegradability of a biodegradable polymer, comprising introducing an optionally substituted aliphatic hydrocarbon group into the terminal of the polymer chain of the biodegradable polymer.
    Type: Application
    Filed: August 29, 2012
    Publication date: September 18, 2014
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Naoko Yamano, Norioki Kawasaki, Atsuyoshi Nakayama
  • 2-PYRROLIDONE POLYMER OR COPOLYMER HAVING MODIFIED PHYSICAL PROPERTIES, AND MANUFACTURING METHOD FOR SAME
    Publication number: 20140114045
    Abstract: Disclosed is a 2-pyrrolidone polymer or copolymer having optionally substituted methylol groups, and a process for producing the 2-pyrrolidone polymer or copolymer having methylol groups, the process comprising reacting a 2-pyrrolidone polymer or copolymer with an aldehyde.
    Type: Application
    Filed: May 22, 2012
    Publication date: April 24, 2014
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Norioki Kawasaki, Atsuyoshi Nakayama, Naoko Yamano