Patents by Inventor Soji Sugai

Soji Sugai 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).

  • Aniline derivatives having herbicidal activity, their preparation and their use
    Patent number: 5736487
    Abstract: Compounds of formula (I): ##STR1## (wherein: R.sup.1 is optionally substituted alkyl, cycloalkyl, optionally substituted alkoxy, or optionally substituted alkylthio; R.sup.2 is hydrogen, optionally substituted alkyl, cycloalkyl, optionally substituted alkenyl, optionally substituted alkynyl or a group of formula --YR.sup.7 ; R.sup.3 is optionally substituted alkyl, cycloalkyl, optionally substituted alkoxy group, optionally substituted alkenyl, optionally substituted alkynyl, halogen, nitro or a group of formula --COR.sup.8, wherein R.sup.8 is hydrogen, alkyl, cycloalkyl or alkoxy; R.sup.4 and R.sup.5 are each hydrogen atom or alkyl; R.sup.6 is optionally substituted alkyl, cycloalkyl, optionally substituted alkoxy group, optionally substituted alkenyl, optionally substituted alkynyl, halogen, nitro, or a group of formula --COR.sup.8, as defined above;A, Q and X are each oxygen or sulfur; Y is a group of formula --CO--, --COO--, --CH.sub.2 O--, --CH.sub.2 S--, --CH.sub.2 CH.sub.2 O--, --CH.sub.2 CH.sub.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: April 7, 1998
    Assignee: Sankyo Company, Limited
    Inventors: Soji Sugai, Hiroyuki Komai, Noriaki Kudo, Kazuo Sato, Toyokuni Honma, Junji Kadotani, Kiyoshi Koi, Mitsuru Ito
  • Pyrazole derivatives having herbicidal activity and their use
    Patent number: 5424279
    Abstract: Compounds of formula (I): ##STR1## (in which: R.sup.1 and R.sup.2 are each hydrogen, optionally substituted alkyl, optionally substituted alkenyl, alkynyl, alkoxy, aryl or pyridyl, or R.sup.1 and R.sup.2 together represent alkylene; A and B are each hydrogen, halogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkoxy, alkylthio, alkylsulfonyl, dialkylsulfamoyl, aliphatic carboxylic acyl, carboxy, --CONR.sup.a R.sup.b where R.sup.a and R.sup.b are each hydrogen or alkyl, formyl or cyano groups; D represents optionally substituted phenyl, benzyl, pyridyl or pyrimidinyl; and n is 0, 1 or 2; and salts and esters thereof) have valuable herbicidal properties, and, since they are totally innocuous to rice plants, are especially useful for the treatment of paddy fields.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: June 13, 1995
    Assignee: Sankyo Company, Limited
    Inventors: Soji Sugai, Shigeru Mio, Toyokuni Honma, Takashi Sakamoto
  • 13-(substituted thio)acetoxymilbemycin derivatives, their preparation and their agrochemical uses
    Patent number: 5276033
    Abstract: Compounds having the formula (I) ##STR1## wherein: R.sup.1 is methyl, ethyl or isopropyl; R.sup.2 is alkyl, aralkyl, cycloalkyl, cycloalkylmethyl, aryl, heterocyclic, or heterocyclic-substituted thio; R.sup.3 is hydrogen, methyl or ethyl; or R.sup.2 together with R.sup.3 is --(CH.sub.2).sub.n --, wherein n is 3,4 or 5; and A is aromatic heterocyclic; and salts thereof, are valuable agricultural and horticultural anthelmintic, acaricidal and insecticidal agents.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: January 4, 1994
    Assignee: Sankyo Company, Limited
    Inventors: Toshiaki Yanai, Soji Sugai, Hideo Takeshiba, Junzo Tobitsuka, Kazuo Sato, Shinji Yokoi, Shinya Niimi, Akio Saito