Patents by Inventor Kumiko Otaya

Kumiko Otaya 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 PRODUCTION OF QUINUCLIDINE COMPOUNDS
    Publication number: 20140371457
    Abstract: Provided is a production method for a cis-QMF, which has a low environmental burden and is industrially advantageous. Specifically provided is a production method for a cis-type 2-alkylspiro(1,3-oxathiolane-5,3?)quinuclidine hydrochloride, including: reacting a cis-trans isomer mixture of 2-alkylspiro(1,3-oxathiolane-5,3?)quinuclidine with p-nitrobenzoic acid; resolving the resultant product to produce a cis-type 2-alkylspiro(1,3-oxathiolane-5,3?)quinuclidine p-nitrobenzoate; and converting the p-nitrobenzoate into a hydrochloride.
    Type: Application
    Filed: August 28, 2014
    Publication date: December 18, 2014
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yutaka KITAGAWA, Masao FUJITA, Kumiko OTAYA
  • PROCESS FOR PRODUCTION OF QUINUCLIDINE COMPOUNDS
    Publication number: 20130060036
    Abstract: Provided is a production method for a cis-QMF, which has a low environmental burden and is industrially advantageous. Specifically provided is a production method for a cis-type 2-alkylspiro(1,3-oxathiolane-5,3?)quinuclidine hydrochloride, including: reacting a cis-trans isomer mixture of 2-alkylspiro(1,3-oxathiolane-5,3?)quinuclidine with p-nitrobenzoic acid; resolving the resultant product to produce a cis-type 2-alkylspiro(1,3-oxathiolane-5,3?)quinuclidine p-nitrobenzoate; and converting the p-nitrobenzoate into a hydrochloride.
    Type: Application
    Filed: October 21, 2010
    Publication date: March 7, 2013
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yutaka Kitagawa, Masao Fujita, Kumiko Otaya