Patents by Inventor Nedelcho Draganov Draganov

Nedelcho Draganov Draganov 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).

  • Method for electric extraction of non-ferrous metals from their solutions
    Patent number: 4024035
    Abstract: Method of and system for electric extraction of non-ferrous metals from their solutions. The process is effected by applying a reversing electric current of different duration for the current for the electric extraction and the dissolution. The process is conducted simultaneously in two groups of electrolytic baths, the electric current for dissolution for each group of electrolytic baths being provided by the electric current for electric extraction in the other group of electrolytic baths.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: May 17, 1977
    Assignee: Nipki po Tzvetna Metalurgia
    Inventors: Ivan Dimitrov Enchev, Eliesser Persiado Ilel, Nikola Tzanov Kunchev, Kiril Georgiev Harizanov, Vladimir Vetov Genevski, Nedelcho Draganov Draganov, Georgi Alexandrov Haralampiev, Todor Ivanov Smilenov, Yossif Genchev Stoyanov, Alexander Minchev Alexandrov