Patents by Inventor Eugen Diethelm

Eugen Diethelm 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).

  • Product and method for combating swine dysentery
    Patent number: 4292318
    Abstract: A substituted pyrazine having the formula ##STR1## is useful for treating and preventing swine dysentery. It may be administered to swine in an effective but non-toxic amount in the form of the drug per se, or a feed composition. Such feeds may be made with the aid of premixes containing the said compound.
    Type: Grant
    Filed: June 6, 1980
    Date of Patent: September 29, 1981
    Assignee: Grissman Chemicals Limited
    Inventor: Eugen Diethelm
  • Process for preparing pyrenzepine
    Patent number: 4277399
    Abstract: Pyrenzepine, as such or as an acid addition salt, is made by reacting a lower alkyl ester of o-aminobenzoic acid with 3-aminopyridine in the presence of a base and reacting the tricyclic product with a mixed anhydride of methyl-piperazine acetic acid.
    Type: Grant
    Filed: June 6, 1980
    Date of Patent: July 7, 1981
    Assignee: Grissman Chemicals Limited
    Inventor: Eugen Diethelm
  • (1-Alkyl-5-nitro-2-imidazolyl)-vinyl-glyoxal-diacetals, their preparation and their use
    Patent number: 4273783
    Abstract: (1-Alkyl-5-nitro-imidazolyl)-vinyl-glyoxal-diacetals of the formula: ##STR1## in which R and R' are each alkyl of 1 to 5 carbon atoms, are useful in the treatment of infections caused by protozoa, mycetes, and bacteria.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: June 16, 1981
    Assignee: Grissman Chemicals Limited
    Inventor: Eugen Diethelm