Patents by Inventor Soko Kasai

Soko Kasai 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).

  • Chromene compound
    Patent number: 8308995
    Abstract: A chromene compound represented by the following formula (1): wherein R1, R2, R3, R4, R5, R6, m, and n are defined in the specification. The chromene compound is rarely deteriorated by exposure.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: November 13, 2012
    Assignee: Tokuyama Corporation
    Inventors: Soko Kasai, Shinobu Izumi
  • CHROMENE COMPOUND
    Publication number: 20120138876
    Abstract: A chromene compound represented by the following formula (1): wherein R1, R2, R3, R4, R5, R6, m, and n are defined in the specification. The chromene compound is rarely deteriorated by exposure.
    Type: Application
    Filed: February 9, 2012
    Publication date: June 7, 2012
    Inventors: Soko KASAI, Shinobu Izumi
  • Chromene compound
    Patent number: 8147726
    Abstract: A chromene compound represented by the following formula (1): wherein R1, R2, R3, R4, R5, R6, m, and n are defined in the specification. The chromene compound is rarely deteriorated by exposure.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: April 3, 2012
    Assignee: Tokuyama Corporation
    Inventors: Soko Kasai, Shinobu Izumi
  • CHROMENE COMPOUND
    Publication number: 20110062396
    Abstract: A chromene compound represented by the following formula (1): wherein R1 and R2 are each independently an alkyl group having 1 to 9 carbon atoms, cycloalkyl group having 3 to 12 carbon atoms, perfluoroalkoxy group having 1 to 6 carbon atoms, aralkyl group having 7 to 11 carbon atoms, aralkoxy group having 7 to 11 carbon atoms, aryl group having 6 to 10 carbon atoms, aryloxy group having 6 to 10 carbon atoms or alkoxy group having 1 to 6 carbon atoms, with the proviso that R1 and R2 cannot be alkoxy groups having 1 to 6 carbon atoms at the same time; R3 and R4 are each independently a hydrogen atom, hydroxyl group, alkyl group having 1 to 9 carbon atoms, cycloalkyl group having 3 to 12 carbon atoms, alkoxy group having 1 to 6 carbon atoms, aralkyl group having 7 to 11 carbon atoms, aralkoxy group having 7 to 11 carbon atoms, aryl group having 6 to 10 carbon atoms or aryloxy group having 6 to 10 carbon atoms; R1 and R3 or R2 and R4 may be bonded together to form an alkylene group or alkylenedioxy group; R5
    Type: Application
    Filed: May 8, 2009
    Publication date: March 17, 2011
    Inventors: Soko Kasai, Shinobu Izumi