Patents by Inventor Kanami Yoshikawa

Kanami Yoshikawa 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).

  • Process for preparing pyridinemethanol compounds
    Patent number: 6437120
    Abstract: Disclosed is a process for preparing mirtazapine comprising adding a pyridinemethanol compound represented by the formula (II): to sulfuric acid.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: August 20, 2002
    Assignee: Sumika Fine Chemicals Co., Ltd.
    Inventors: Eiichi Iishi, Kanami Yoshikawa
  • Process for preparing pyridinemethanol compounds
    Patent number: 6376668
    Abstract: A pyridinemethanol compound is an important intermediate for a mirtazapine which is useful as an antidepressant. The pyridinemethanol compound is obtained by reducing potassium pyridinecarboxylate represented by the formula (I): with a metal hydride.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: April 23, 2002
    Assignee: Sumika Fine Chemicals Co., Ltd.
    Inventors: Eiichi Iishi, Kanami Yoshikawa
  • Process for preparing pyridinemethanol compounds
    Publication number: 20020035255
    Abstract: A pyridinemethanol compound is an important intermediate for a mirtazapine which is useful as an antidepressant.
    Type: Application
    Filed: October 19, 2001
    Publication date: March 21, 2002
    Applicant: Sumika Fine Chemicals Co., Ltd.
    Inventors: Eiichi Iishi, Kanami Yoshikawa