Patents by Inventor Takeshi Nishiyori

Takeshi Nishiyori 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).

  • Anti-allergic hydroxybiphenyl compounds
    Patent number: 4650813
    Abstract: New hydroxybiphenyl compounds of the general formula: ##STR1## wherein R.sub.1 stands for a hydrogen atom or a hydroxyl group, R.sub.2 for a hydrogen atom or a hydroxyl group, R.sub.3 for a hydroxyl group, a group of the formula --CH.sub.2 --CH.dbd.CH.sub.2 or a group of the formula --CH.dbd.CH--CHO, R.sub.4 for a hydrogen atom or a group of the formula ##STR2## and R.sub.5 for a hydroxyl group or a group of the formula ##STR3## These compounds are obtained by extraction of "Tokoboku", i.e. dried cortex of Magnolia officinalis which belongs to the family Magnoliaceae. They are useful as pharmaceuticals or intermediates therefor, in particular as anti-allergics.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: March 17, 1987
    Assignee: Kabushiki Kaisha Tsmurajuntendo
    Inventors: Akihide Kooda, Itsuo Nishioka, Takeshi Nishiyori, Shoji Yahara
  • Hydroxybiphenyl compounds
    Patent number: 4537996
    Abstract: New hydroxybiphenyl compounds of the general formula: ##STR1## wherein R.sub.1 stands for a hydrogen atom or a hydroxyl group, R.sub.2 for a hydrogen atom or a hydroxyl group, R.sub.3 for a hydroxyl group, a group of the formula -CH.sub.2 -CH.dbd.CH.sub.2 or a group of the formula -CH.dbd.CH-CHO, R.sub.4 for a hydrogen atom or a group of the formula ##STR2## and R.sub.5 for a hydroxyl group or a group of the formula ##STR3## These compounds are obtained by extraction of "Tokoboku", i.e. dried cortex of Magnolia officinalis which belongs to the family Magnoliaceae. They are useful as pharmaceuticals or intermediates therefor, in particular as anti-allergics.
    Type: Grant
    Filed: September 22, 1983
    Date of Patent: August 27, 1985
    Assignee: Kabushiki Kaisha Tsumurajuntendo
    Inventors: Akihide Kooda, Itsuo Nishioka, Takeshi Nishiyori, Shoji Yahara