Patents by Inventor Jiyoji Notani

Jiyoji Notani 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).

  • Sulfonic acid esters
    Patent number: 4242507
    Abstract: A novel process for the amidation or esterification which comprises reacting a compound having a carboxy group with a compound having an amino or imino group which can be acylated or with a compound having a hydroxy group in the presence of a sulfonic acid ester of the formula:R.sub.1 --SO.sub.2 --OR.sub.2wherein R.sub.1 is an organic group and R.sub.2 O-- is a residue of a strongly acidic N-hydroxy compound as a condensation agent, and a novel sulfonic acid ester useful as such a condensation agent and a process for the preparation thereof.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: December 30, 1980
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masumi Itoh, Jiyoji Notani