Patents by Inventor Wilhelm Otto

Wilhelm Otto 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).

  • Apparatus for adjusting and locking pitch of a variable pitch propeller on a ship
    Patent number: 4643643
    Abstract: Apparatus for adjusting and locking the pitch of a variable pitch propeller. Within a propeller shaft, a hydraulic piston is provided which drives a rod, a plate, and levers to rotate the propeller blades in, and with respect to, the hub of the propeller. The root of the propeller within the hub has a conical portion which has a mating conical ring thereabout. This conical ring is engaged and locked into place with the conical portion of the propeller root and the propeller hub by hydraulic oil pressure, once the optimum pitch of the propeller blades is determined.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: February 17, 1987
    Assignee: Blohm & Voss AG
    Inventor: Wilhelm Otto
  • Process for the manufacture of 2-alkylsulfinyl-6-nitrobenz-thiazoles
    Patent number: 3985762
    Abstract: 2-Alkylsulfinyl-6-nitrobenzthiazoles of the formula ##SPC1##In which R is alkyl having from 1 to 10 carbon atoms are prepared by reacting 2-alkylmercaptobenzthiazoles of the formula ##SPC2##With at least 2 moles of fuming nitric acid in at least 300 grams of sulfuric acid, of at least 90 % strength, per mole of benzthiazole.
    Type: Grant
    Filed: January 2, 1975
    Date of Patent: October 12, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunter Karl Wilhelm Otto Dransch, deceased, by Annelise Klara Helene Wiesenhutter, heiress, by Johanna Mathilde Flersheim, heiress
  • Substituted 2-alkoxycarbonylamine-5-(6)-phenylmercapto-benzimidazoles
    Patent number: 3980796
    Abstract: Substituted 2-alkoxycarbonylamine-5(6)-phenylmercapto-benzimidazoles are described as well as a process for their manufacture. The compounds are chemotherapeutics being especially suitable for the control of parasites of humans and animals, for example for controlling nematodes.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: September 14, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunter Karl Wilhelm Otto Dransch, deceased, by Annelise Klara Helene Wiesenhutter, heiress, Johanna Mathilde Flersheim, heiress, Hilmar Mildenberger, Dieter Duwel, Reinhard Kirsch