Patents by Inventor Helmut Hermann Ehlers

Helmut Hermann Ehlers 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).

  • 2,5-Bis(benzyloxy)tetrahydrofuran
    Patent number: 4059596
    Abstract: There is disclosed a method for controlling bacteria, fungi and spores which comprises applying thereto a 2,5-disubstituted-di (or tetra) hydrofuran, a process for preparation of such furans, and the novel compound 2,5-bis (benzyloxy) tetrahydrofuran.
    Type: Grant
    Filed: July 15, 1976
    Date of Patent: November 22, 1977
    Assignee: Sterling Drug Inc.
    Inventors: Heinz Eggensperger, Wolfgang Beilfuss, Helmut Hermann Ehlers
  • Disinfectant furans
    Patent number: 4004024
    Abstract: There is disclosed a method for controlling bacteria, fungi and spores which comprises applying thereto a bactericidally, fungicidally and sporicidally effective amount of a furan selected from 2-(R.sub.1 O)-5-(R.sub.2 O)-2,5-dihydrofuran and 2-(R.sub.1 O)-5-(R.sub.2 O)-tetrahydrofuran or mixtures thereof; a process for preparing a 2,5-bis(R.sub.1 O)-2,5-tetrahydrofuran and 2,5-bis(R.sub.1 O)-tetrahydrofuran; and novel 2,5-bis(benzyloxy)tetrahydrofuran.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: January 18, 1977
    Assignee: Sterling Drug Inc.
    Inventors: Heinz Eggensperger, Wolfgang Beilfuss, Helmut Hermann Ehlers