Patents by Inventor Kuniki Kato

Kuniki Kato 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).

  • Medicinal composition
    Publication number: 20060167086
    Abstract: (?)-DHM2EQ, which is useful as an antitumor agent and an anti-inflammatory agent, can be directly obtained by optically resolving (±)-DHM2EQ using an optically active column packed with an optical resolving agent containing, for example, amylose tris(3,5-dimethylphenylcarbamate) as an active ingredient. The (?)-DHM2EQ obtained by optical resolution using the optically active column or pharmacologically acceptable salt thereof is useful as a pharmaceutical composition for improving various symptoms.
    Type: Application
    Filed: February 16, 2004
    Publication date: July 27, 2006
    Inventors: Kazuo Umezawa, Kuniki Kato, Yoshikazu Suzuki, Yutaka Horiguchi, Jun Nakashima, Hiroyuki Hata, Hiroyuki Namba, Izumi Takei, Ryouichi Horie
  • Oxetane derivatives
    Patent number: 4960910
    Abstract: The present invention relates to an oxetane derivative represented by the general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are each an acyl group and R.sub.3 is a hydrogen atom or a lower alkyl group, which is useful as an intermediate for the preparation of a compound having a (bishydroxymethyl)oxetane structure in its saccharide moiety, for example, oxetanosine, and a process for the preparation of the same.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: October 2, 1990
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kuniki Kato, Tomohisa Takita, Shigeru Nishiyama, Shosuke Yamamura
  • 2'-Deoxyoxanosine
    Patent number: 4530998
    Abstract: This invention relates to 2'-deoxy-oxanosine represented by the following formula: ##STR1## and process for the preparation thereof. This new compound exhibits a growth inhibiting action to gram-negative bacteria and has a carcinostatic action.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: July 23, 1985
    Assignee: Zaidan Hojin Biseibutsu Kagaku KenkyuKai
    Inventors: Hamao Umezawa, Tomio Takeuchi, Masaaki Ishizuka, Tomohisa Takita, Nobuyoshi Shimada, Kuniki Kato