Patents by Inventor Rieko Fujimura

Rieko Fujimura 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).

  • Method of optical resolution of (.+-.)-2-amino-1-butanol and/or (.+-.)-mandelic acid
    Patent number: 4340751
    Abstract: (.+-.)-2-Amino-1-butanol and/or (.+-.)-mandelic acid are optically resolved with a high resolution efficiency and high optical purities by preferentially crystallizing out one of the pair of less soluble enantiomeric salts (or optical antipodes), namely (+)-2-amino-1-butanol-(+)-mandelic acid salt and (-)-2-amino-1-butanol-(-)-mandelic acid salt.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: July 20, 1982
    Assignee: Hiroyuki Nohira
    Inventors: Hiroyuki Nohira, Hiroshi Fujii, Masami Yajima, Rieko Fujimura