Patents by Inventor Nao Kitayado

Nao Kitayado 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).

  • Crystal forms of sulfonylurea compound and method for producing the same
    Patent number: 8765640
    Abstract: Crystal forms of sulfonylurea compound and method for producing the same. It has been found that a sulfonylurea compound of Formula (1): has two types of crystal polymorphisms and four types of pseudo crystal polymorphisms. A production method of each crystal form of the sulfonylurea compound of Formula (1) through recrystallization or solvate has been also found. In addition, a suspension of a composition containing the crystal that is improved in storage stability is provided.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: July 1, 2014
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Yoshiyuki Kusuoka, Yoshihiko Nakaya, Nao Kitayado
  • CRYSTAL FORMS OF SULFONYLUREA COMPOUND AND METHOD FOR PRODUCING THE SAME
    Publication number: 20120220461
    Abstract: Crystal forms of sulfonylurea compound and method for producing the same. It has been found that a sulfonylurea compound of Formula (1): has two types of crystal polymorphisms and four types of pseudo crystal polymorphisms. A production method of each crystal form of the sulfonylurea compound of Formula (1) through recrystallization or solvate has been also found. In addition, a suspension of a composition containing the crystal that is improved in storage stability is provided.
    Type: Application
    Filed: October 25, 2010
    Publication date: August 30, 2012
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshiyuki Kusuoka, Yoshihiko Nakaya, Nao Kitayado