Patents by Inventor Issei Otsuka

Issei Otsuka 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).

  • OLIGOSACCHARIDE/SILICON-CONTAINING BLOCK COPOLYMERS FOR LITHOGRAPHY APPLICATIONS
    Publication number: 20130022785
    Abstract: The present invention discloses diblock copolymer systems that self-assemble to produce very small structures. These co-polymers consist of one block that contains silicon and another block comprised of an oligosaccharide that are coupled by azide-alkyne cycloaddition.
    Type: Application
    Filed: June 20, 2012
    Publication date: January 24, 2013
    Inventors: Christopher John Ellison, Julia Cushen, Issei Otsuka, C. Grant Willson, Christopher M. Bates, Jeffery Alan Easley, Redouane Borsali, Sebastien Fort, Sami Halila
  • Polyprenyl Compounds
    Patent number: 4883916
    Abstract: A polyprenyl compound terminated with a group of ##STR1## is novel and useful as an antihypercholesterolemic agent and an antiarteriosclerotic agent, in which X is a group of the formula ##STR2## wherein K and L are independently a hydrogen atom or form a single valence bond between the carbon atoms to which they are attached, a group represented by the formula --CH.sub.2 -- or a group represented by the formula --(CH.sub.2).sub.2 --, m is an integer of 0 or 1, and R stands for a hydroxy group, a group represented by the Formula ##STR3## wherein R.sup.1 and R.sup.2 may be the same or different and each stands for a hydrogen atom or a lower alkyl group and p stands for an integer of 1 or 2, a group represented by the formula --NH--(CH.sub.2).sub.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: November 28, 1989
    Assignee: Eisai Co., Ltd.
    Inventors: Kouji Nakamoto, Takeshi Suzuki, Shinya Abe, Kenji Hayashi, Akiharu Kajiwara, Isao Yamatsu, Issei Otsuka, Hiroyuki Shiojiri
  • Polyprenyl compounds
    Patent number: 4788330
    Abstract: A polyprenyl compound terminated with a group of ##STR1## is novel and useful as an antihypercholesterolemic agent and an antiarteriosclerotic agent, in which X is a group of the formula ##STR2## (wherein K and L are independently a hydrogen atom or form a single valence bond between the carbon atoms to which they are attached), a group represented by the formula --CH.sub.2 -- or a group represented by the formula --(CH.sub.2).sub.2 --, m is an integer of 0 or 1, and R stands for a hydroxy group, a group represented by the formula ##STR3## wherein R.sup.1 and R.sup.2 may be the same or different and each stands for a hydrogen atom or a lower alkyl group and p stands for an integer of 1 or 2, a group represented by the formula --NH--(CH.sub.2).sub.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: November 29, 1988
    Assignee: Eisai Co., Ltd.
    Inventors: Kouji Nakamoto, Takeshi Suzuki, Shinya Abe, Kenji Hayashi, Akiharu Kajiwara, Isao Yamatsu, Issei Otsuka, Hiroyuki Shiojiri