Patents by Inventor Leon Langsadl

Leon Langsadl 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).

  • 3 Fluoro-10-piperazino-8-substituted 10,11-dihydrodibenzo-(bf) thiepins and method for the preparation thereof
    Patent number: 4243805
    Abstract: Techniques for the preparation of 3-fluoro-10-piperazino-8-substituted 10,11-dihydrodibenzo-(b,f) thiepins and their addition salts with organic and inorganic acids are disclosed. The described compositions evidence psychotropic activity and low toxicity and are characterized as neuroliptics with a high degree of cataleptic, anti-apomorphine and central depressant action.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: January 6, 1981
    Assignee: SPOFA, spojene podniky pro zdravotnickou vyrobu
    Inventors: Miroslav Protiva, Miroslav Rajsner, Karel Sindelar, Jiri Jilek, Vaclav Bartl, Jirina Metysova, Antonin Dlabac, Leon Langsadl, Josef Pomykacek, Frantisek Miksik