Patents by Inventor Osamu Suzuka

Osamu Suzuka 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).

  • 5-Benzylpicolinic acid derivatives
    Patent number: 4109000
    Abstract: 5-Benzy-2-pyridine carboxylic acids, in which the benzyl group is optionally substituted by one or two like or different alkyl, halo, alkoxy, nitro, amino, acetamido, hydroxy or acetoxy groups, and the corresponding amides and esters, possess dopamine .beta.-hydroxylase inhibitory properties and are useful as blood pressure lowering agents. The compounds, of which 5-(4-chlorobenzyl)-2-pyridine carboxylic acid, 5-(4-hydroxybenzyl)-2-pyridine carboxylic acid and 5-benzyl-2-pyridine carboxylic acid are typical examples, can be prepared by a number of chemical methods.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: August 22, 1978
    Assignees: Nippon Shinyaku Co., Ltd., Takara Shuzo Co., Ltd.
    Inventors: Osamu Tanabe, Akiro Obayashi, Teruya Nakamura, Osamu Suzuka, Masao Murayama, Hiromu Murai
  • Process for the preparation of phenopicolinic acid
    Patent number: 4009077
    Abstract: Phenopicolinic acid is produced by culturing a strain of Paecilomyces. The compound, which may be alternatively named as 5-(4-hydroxybenzyl)-2-pyridinecarboxylic acid, is a hypotensive agent.
    Type: Grant
    Filed: August 22, 1975
    Date of Patent: February 22, 1977
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Osamu Tanabe, Akira Obayashi, Teruya Nakamura, Osamu Suzuka, Masao Murayama, Shingo Matsumura