Patents by Inventor Joseph Herman Lesser

Joseph Herman Lesser 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).

  • Cyclic phosphoryl and thiophosphoryl halides
    Patent number: 4087490
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, alkyl, alkenyl, cycloalkyl, aryl, alkaryl, aralkyl, halogen, cyano, nitro, alkoxy, alkylthio, aryloxy, haloalkyl, and haloaryl, n is 0, 1, 2, 3 or 4; X is oxygen or sulfur, Y is chlorine or bromine and a process for the production of these; and for the conversion of these to valuable insecticides by reacting same with an alkanol.
    Type: Grant
    Filed: July 20, 1976
    Date of Patent: May 2, 1978
    Assignee: Makhteshim Chemical Works, Ltd.
    Inventors: Joseph Herman Lesser, Ludmila Friedman