Patents by Inventor Pieter T. Haken

Pieter T. Haken 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).

  • Fungicidally active compositions containing ethene derivatives
    Patent number: 4600712
    Abstract: Certain species of fungi are controlled by ethene derivatives of the formula: ##STR1## wherein one of Ar.sup.1 and Ar.sup.2 is one of certain N-heterocyclic moieties and the other is halogen-substituted phenyl, R.sup.1 is hydrogen or alkyl and R.sup.2 is --CN or --C(O)XR, wherein X is oxygen or sulfur and R.sup.1 has a defined meaning.
    Type: Grant
    Filed: October 9, 1985
    Date of Patent: July 15, 1986
    Assignee: Shell Oil Company
    Inventors: Pieter T. Haken, Shirley B. Webb
  • 3-(R-thio)propionic acid substituted on adjacent carbon atoms by pyridyl and optionally-substituted phenyl, and corresponding optionally-substituted alkyl esters
    Patent number: 4532329
    Abstract: Novel compounds of the formula ##STR1## wherein one of Ar.sup.1 and Ar.sup.2 is pyridyl and the other is optionally substituted phenyl, R is optionally substituted alkyl and R.sup.1 is hydrogen or optionally substituted alkyl, and salts thereof, useful as fungicides.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: July 30, 1985
    Assignee: Shell Oil Company
    Inventors: Pieter T. Haken, Shirley B. Webb