Patents by Inventor Gerhard Huppi

Gerhard Huppi 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).

  • Piperidine salts as plant growth regulants
    Patent number: 4139367
    Abstract: Compounds represented by the formula ##STR1## wherein R.sub.1 is lower alkyl having 1-4 carbons, lower alkenyl having 2-4 carbons or lower alkynyl having 2-4 carbons; R.sub.2, R.sub.3 and R.sub.4 each are a lower alkyl having 1-4 carbons or R.sub.2 and R.sub.4 together with the carbon to which they are attached are a 5 or 6 membered alicyclic ring; and X is chlorine, bromine or iodine;Their use as plant growth regulants and plant growth regulant compositions containing the active compounds are disclosed.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: February 13, 1979
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Gerhard Huppi, Wijitha DeSilva, Gottlieb Ryser
  • 1-(3,7-Dimethyloctyl)-1(2-propenyl)-and 1(2-propynyl)-piperidinium bromides as plant growth regulants
    Patent number: 4014678
    Abstract: Compounds represented by the formula ##STR1## wherein R.sub.1 is lower alkyl having 1-4 carbons, lower alkenyl having 2-4 carbons or lower alkynyl having 2-4 carbons; R.sub.2, R.sub.3 and R.sub.4 each are a lower alkyl having 1-4 carbons or R.sub.2 and R.sub.4 together with the carbon to which they are attached are a 5 or 6 membered alicyclic ring; and X is chlorine, bromine or iodine;Their use as plant growth regulants and plant growth regulant compositions containing the active compounds are disclosed.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: March 29, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Gerhard Huppi, Wijitha De Silva, Gottlieb Ryser