Patents by Inventor Yoshinori Takahashi, deceased

Yoshinori Takahashi, deceased 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).

  • Indole derivative and method of production thereof
    Patent number: 5137909
    Abstract: An indole derivative represented by the general formula (I) ##STR1## wherein R is hydrogen, lower alkyl having 1 to 6 carbons, carboxymethyl, or substituted or unsubstituted aralkyl; R.sup.1, R.sup.2, R.sup.3, and R.sup.4 may be the same with or different from each other and are hydrogen, halogen, lower alkyl having 1 to 6 carbons, lower alkoxy having 1 to 6 carbons, acyl, substituted or unsubstituted amino, nitro, hydroxy, acyloxy, substituted or unsubstituted aralkyl, substituted or unsubstituted aryloxy, or substituted or unsubstituted aralkyloxy, or a combination of R.sup.2 and R.sup.3 may be methylenedioxy;R.sup.5 is hydrogen, lower alkyl having 1 to 6 carbons, or substituted or unsubstituted aralkyl; R and R.sup.4, or R.sup.1 and R.sup.5 may form together a six-membered ring constituted of methylene chains which may contain a heteroatom;R.sup.6 and R.sup.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: August 11, 1992
    Assignee: Kyorin Seiyaku Kabushiki Kaisha
    Inventors: Hidehiko Miura, Naoki Harano, Yasuo Takano, Toshiro Mochizuki, Yoshinori Takahashi, deceased, Takashi Nagayama