Patents by Inventor Muneharu Ikushima

Muneharu Ikushima 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 of depsipeptide derivative and process for producing the same
    Patent number: 6346603
    Abstract: Crystals of a depsipeptide derivative of formula (IV): having an antiparasitic activity and methods for producing such crystals. Such crystals include crystals (I), (II) and (III) that have particular physicochemical properties or characteristics, such as excellent filtration properties during crystallization, great fluidity, good specific volume. As a consequence, such crystals have improved handling ability during production resulting in enhanced production efficiency and increased crystal yield. Methods are also provided for producing such crystals.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: February 12, 2002
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Atsushi Yamamura, Ryo Yamanishi, Muneharu Ikushima
  • Process for producing pyrrolidine derivative and salt thereof
    Patent number: 5675011
    Abstract: A process for producing a compound of the general formula: ##STR1## wherein R.sup.1 is heterocyclic(lower)alkyl, R.sup.2 is acyl, andR.sup.3 is carboxy(lower)alkyl or protected carboxy(lower)alkyl,which is useful as a medicament or a salt thereof.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 7, 1997
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kohji Kagara, Shunsuke Goto, Satoshi Yonishi, Muneharu Ikushima, Yukihisa Baba, Haruo Horiai
  • Process for producing pyrrolidine derivative and salt thereof
    Patent number: 5543525
    Abstract: A process for producing a compound of the general formula: ##STR1## wherein R.sup.1 is heterocyclic(lower)alkyl,R.sup.2 is acyl, andR.sup.3 is carboxy(lower)alkyl orprotected carboxy (lower) alkyl, which is useful as a medicament or a salt thereof.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: August 6, 1996
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kohji Kagara, Shunsuke Goto, Satoshi Yonishi, Muneharu Ikushima, Yukihisa Baba, Haruo Horiai