Patents by Inventor Jean-Pierre Leber

Jean-Pierre Leber 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).

  • Process for thiophosphoric acid derivatives
    Patent number: 4185052
    Abstract: The present invention relates to a novel process for the production of thiophosphoric acid derivatives of the formula ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.5 alkylX is H, Cl or BrY.sub.1 is C.sub.1 -C.sub.5 alkoxy, Cl or Br andY.sub.2 is Cl or Br andthe --CH.sub.3 and --COOR.sub.1 radicals are Cis one to another in the crotonic acid moiety.The compounds of formula I are useful intermediates in the production of known insecticides.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: January 22, 1980
    Assignee: Sandoz Ltd.
    Inventor: Jean-Pierre Leber
  • N-[O-(.beta.-Cyanoethyl)-phosphonomethyl]-glycines and derivatives
    Patent number: 4025331
    Abstract: The present invention concerns novel phosphonomethyl glycine derivatives of the formula ##STR1## wherein R is hydrogen, unsubstituted or substituted hydrocarbon or a cation andM is hydrogen or a cation,Possessing herbicidal and plant growth regulating properties.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: May 24, 1977
    Assignee: Sandoz Ltd.
    Inventor: Jean-Pierre Leber