Patents by Inventor Sakae Kawamura

Sakae Kawamura 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).

  • Norbornene derivative
    Patent number: 9440939
    Abstract: A novel compound useful as a raw material for a resist material is described. A norbornene derivative having epoxy and a methylene-mediated reactive group in a norbornane skeleton is represented by the following formula. In the formula, R1 represents a hydrogen atom, acryloyl, methacryloyl or hydroxymethylacryloyl, and R2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
    Type: Grant
    Filed: November 28, 2013
    Date of Patent: September 13, 2016
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Hirotsuna Yamada, Sakae Kawamura
  • NOVEL NORBORNENE DERIVATIVE
    Publication number: 20150307467
    Abstract: A novel compound useful as a raw material for a resist material is described. A norbornene derivative having epoxy and a methylene-mediated reactive group in a norbornane skeleton is represented by the following formula. In the formula, R1 represents a hydrogen atom, acryloyl, methacryloyl or hydroxymethylacryloyl, and R2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
    Type: Application
    Filed: November 28, 2013
    Publication date: October 29, 2015
    Inventors: Hirotsuna YAMADA, Sakae KAWAMURA
  • Basic catalysts and process for producing carbonyl compound derivatives
    Patent number: 6632959
    Abstract: A base catalyst, obtained by formulating at least one alkali metal compound selected from the group consisting of alkoxides, hydroxides and oxides of alkali metals and an alkaline-earth metal oxide in a ratio of “the weight of alkaline metal compound/the weight of alkaline-earth metal oxide”=0.005 to 1, is used in a reaction of an aldehyde to produce a glycol monoester, thereby providing a base catalyst with an improved efficiency which can be applied to aldol reaction or the like and which has high activity to give target product in a high selectivity.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: October 14, 2003
    Assignee: Chisso Corporation
    Inventors: Kan-ichiro Inui, Shunji Oshima, Toru Kurabayashi, Sakae Kawamura, Masahiro Yokota
  • BASIC CATALYSTS AND PROCESS FOR PRODUCING CARBONYL COMPOUND DERIVATIVES
    Publication number: 20020169069
    Abstract: A base catalyst, obtained by formulating at least one alkali metal compound selected from the group consisting of alkoxides, hydroxides and oxides of alkali metals and an alkaline-earth metal oxide in a ratio of “the weight of alkaline metal compound/the weight of alkaline-earth metal oxide”=0.005 to 1, is used in a reaction of an aldehyde to produce a glycol monoester, thereby providing a base catalyst with an improved efficiency which can be applied to aldol reaction or the like and which has high activity to give target product in a high selectivity.
    Type: Application
    Filed: February 7, 2000
    Publication date: November 14, 2002
    Inventors: KAN-ICHIRO INUI, SHUNJI OSHIMA, TORU KURABAYASHI, SAKAE KAWAMURA, MASAHIRO YOKOTA