Patents by Inventor Atsuhiko Shida

Atsuhiko Shida 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).

  • 23-Phenylsteroids
    Patent number: 4959097
    Abstract: Disclosed herein is a novel steroids represented by the formula (1): ##STR1## wherein Z represents ##STR2## n is integer of 1 to 3, R represents hydrogen, halogen, CF.sub.3, lower alkyl, lower alkoxy or --CO.sub.2 R', wherein R' represents hydrogen, alkali metal or lower alkyl, andR.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent hydrogen or acyl, respectively.The compound of the formula (1) of the present invention exhibits high durability as well as excellent plant growth regulation.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: September 25, 1990
    Assignees: Nippon Kayaku Kabushiki Kaisha, Tama Biochemical Co., Ltd.
    Inventors: Sei-ichi Hayashi, Tadashi Hohjoh, Atsuhiko Shida, Nobuo Ikekawa
  • 23-phenylbrassinosteroids
    Patent number: 4886544
    Abstract: Disclosed herein is a novel steroids represented by the formula (1): ##STR1## wherein Z represents ##STR2## n is integer of 1 to 3, R represents hydrogen, halogen, CF.sub.3, lower alkyl, lower alkoxy or --CO.sub.2 R', wherein R' represents hydrogen, alkali metal or lower alkyl, andR.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent hydrogen or acyl, respectively.The compound of the formula (1) of the present invention exhibits high durability as well as excellent plant growth regulation.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: December 12, 1989
    Inventors: Sei-ichi Hayashi, Tadashi Hohjoh, Atsuhiko Shida, Nobuo Ikekawa
  • Increasing the yield of cereals by means of brassinolide derivatives
    Patent number: 4767442
    Abstract: The yield of a cereal is increased by application of an agent selected from brassinolide derivatives of the formulae: ##STR1## wherein R is hydrogen or acetyl.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: August 30, 1988
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tetsuo Takematsu, Nobuo Ikekawa, Atsuhiko Shida
  • 1H[1,2,4]-Triazolo[1,2-a]pyridazine-1,3-diones useful as herbicides
    Patent number: 4561880
    Abstract: A compound of the formula: ##STR1## wherein Z is ##STR2## wherein R.sub.4 is lower alkyl, X and Y are oxygen or sulfur and n is an integer of 3 to 6, R.sub.1 is hydrogen or halogen, R.sub.2 is halogen and R.sub.3 is hydrogen or C.sub.1 -C.sub.8 -alkyl which may have lower alkoxy; a herbicidal composition containing said compound as an effective component; a method for killing weeds using said compound; and processes for the production of said compound, are disclosed hereinafter.
    Type: Grant
    Filed: August 16, 1983
    Date of Patent: December 31, 1985
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Shizuo Shimano, Shinichi Kobayashi, Mikio Yanagi, Osamu Yamada, Atsuhiko Shida, Fumio Futatsuya
  • N-Substituted-tetrahydroisophthalimide derivatives
    Patent number: 4472190
    Abstract: A new N-substituted tetrahydroisophthalimde derivative represented by the formula: ##STR1## Wherein R.sub.1 and R.sub.2 are hydrogen or halogen, R.sub.3 is hydrogen or lower alkyl and R.sub.4 is alkyl which may be substituted by halogen or lower alkoxy, and preparation methods thereof and herbicidal composition comprising one or more of said derivatives as active ingredients, is disclosed.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: September 18, 1984
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Mikio Yanagi, Osamu Yamada, Fumio Futatsuya, Atsuhiko Shida