Patents by Inventor Ludwig Konrad Huber

Ludwig Konrad Huber 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 controlling algae with tetrahydro-1,3-thiazinium salts
    Patent number: 4019891
    Abstract: Tetrahydro-1,3-thiazinium salts of the formula ##STR1## where X is an anion, R.sup.2 hydrogen or hydroxyl, and R and R.sup.1 are alkyl, hydroxyl substituted alkyl, or a heterocyclic ring, are prepared by reacting a secondary amine with formaldehyde and a 3-halopropanethiol. The salts are useful as pesticides and as sensitizers for photographic silver halide emulsions.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: April 26, 1977
    Assignee: Pennwalt Corporation
    Inventor: Ludwig Konrad Huber
  • Process for controlling bacteria with tetrahydro-1,3-thiazinium salts
    Patent number: 3966929
    Abstract: Tetrahydro-1,3-thiazinium salts of the formula ##EQU1## where X is an anion, R.sup.2 is hydrogen or hydroxyl, and R and R.sup.1 are alkyl, hydroxyl substituted alkyl, or a heterocyclic ring, are prepared by reacting a secondary amine with formaldehyde and a 3-halopropanethiol. The salts are useful as pesticides and as sensitizers for photographic silver halide emulsions.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: June 29, 1976
    Assignee: Pennwalt Corporation
    Inventor: Ludwig Konrad Huber