Patents by Inventor Hans P. Huff

Hans P. Huff 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).

  • Patent number: 5385881
    Abstract: Combinations comprising 3-(4,6-dimethoxy-2-pyrimidinyl)-1-[(N-methyl-N-methylsulfonyl)aminosulfony l]-urea (I) and ioxynil (II) and/or bromoxynil (III) are useful herbicides with synergistic properties.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: January 31, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Schumacher, Hans P. Huff, Erwin Hacker
  • Patent number: 5382563
    Abstract: Combinations consisting of 3-(4,6-dimethoxy-2-pyrimidinyl)-1-[(N-methyl-N-methylsulfonyl)-aminosulfon yl]-urea (I) and a phenylurea (II) are useful herbicides having synergistic properties.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: January 17, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Schumacher, Hans P. Huff, Erwin Hacker
  • Patent number: 5382564
    Abstract: The present invention relates to herbicidal agents which contain an effective amount of a compound of the formula I, its salt or its stereoisomers ##STR1## wherein R.sup.1 =a heterocyclic radical of the formulae ##STR2## R.sup.2 =H, (subst.) alkyl or (C.sub.2 -C.sub.4)alkynyl, R.sup.3 =Cl or CF.sub.3,R.sup.4 =H or Cl andR.sup.5 =F or Cl,in combination with a sulfonylurea compound of formula II, which is more specifically set forth in the specification.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: January 17, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Schumacher, Hans P. Huff, Erwin Hacker
  • Patent number: 5342822
    Abstract: The present invention relates to herbicidal agents which contains an effective amount of a compound of the formula I, its salt or its stereoisomers ##STR1## wherein R.sup.1 =a heterocyclic radical of the formulae ##STR2## R.sup.2 =H, (subst.) alkyl or (C.sub.2 -C.sub.4)alkynyl, R.sup.3 =Cl or CF.sub.3,R.sup.4 =H or Cl andR.sup.5 =F or Cl, in combination with methyl 3-[4-methoxy-6-methyl-1,3,5-triazin-2-yl)-aminocarbonyl-aminosulfonyl]-2-t hiophenecarboxylate.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: August 30, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Schumacher, Hans P. Huff
  • Patent number: 5231071
    Abstract: The present invention relates to herbicidal agents which contain an effective amount of a compound of the formula I, its salt or its stereoisomers ##STR1## wherein R.sup.1 =a heterocyclic radical of the formulae ##STR2## R.sup.2 =H, (subst.) alkyl or (C.sub.2 -C.sub.4) alkynyl, R.sup.3 =Cl or CF.sub.3,R.sup.4 =H or Cl andR.sup.5 =F or Cl,in combination with a sulfonylurea compound of formula II, which is more specifically set forth in the specification.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: July 27, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Schumacher, Hans P. Huff, Erwin Hacker