Patents by Inventor Yasuko Tsujino

Yasuko Tsujino 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).

  • Herbicidally-active fatty acid salts
    Patent number: 5948731
    Abstract: The subject invention pertains to novel methods and compositions utilizing novel fatty acid salts which exhibit excellent herbicidal activity in controlling unwanted vegetation. The novel compositions and methods described here facilitate effective weed control using a water soluble salt of a fatty acid.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: September 7, 1999
    Assignee: Mycogen Corporation
    Inventors: Steven L. Evans, John Harvey, Yasuko Tsujino
  • Herbicidally-Active fatty acid allphatic amine salts
    Patent number: 5703019
    Abstract: The subject invention pertains to novel methods and compositions utilizing novel fatty acid salts which exhibit excellent herbicidal activity in controlling unwanted vegetation. The novel compositions and methods described here facilitate effective weed control using a water soluble aliphatic amine salt of a fatty acid.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 30, 1997
    Assignee: Mycogen Corporation
    Inventors: Steven L. Evans, John Harvey, Yasuko Tsujino
  • Herbicides with a cyclic hexapeptide deferriferrichrome as an active ingredient
    Patent number: 5436219
    Abstract: The present invention relates to herbicides comprising as an active ingredient a compound derived from a substance produced by a microorganism, which compound is represented by formula (I): ##STR1## wherein X.sub.1 and X.sub.2 are the same or different and each represent a hydrogen atom, a methyl group or a hydroxymethyl group, R represents a methyl group, a hydroxymethyl group or the following formula: ##STR2## wherein R' represents a carboxyl group, a hydroxymethyl group or an acetoxymethyl group. The herbicide of the present invention exhibits a strong weed-killing effect on a wide range of plants such as broad-leaved weeds as well as weeds belonging to the family Gramineae.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: July 25, 1995
    Assignee: Japan Tobacco Inc.
    Inventors: Junko Ohra, Yasuko Tsujino
  • Herbicidally-active glycol esters of fatty acids
    Patent number: 5284819
    Abstract: The subject invention pertains to novel methods and compositions utilizing novel fatty acid esters which exhibit excellent herbicidal activity in controlling unwanted vegetation. The novel compositions and methods described here facilitate effective weed control using a wide range of fatty acids.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: February 8, 1994
    Assignee: Mycogen Corporation
    Inventors: Paul S. Zorner, Yasuko Tsujino, Osamu Kamioka