Patents by Inventor Istvan Szekeley

Istvan Szekeley 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 the preparation of unsaturated geminal dihalogen compounds
    Patent number: 4450309
    Abstract: The invention relates to a new process for preparing unsaturated geminal dihalogen compounds. More particularly, the invention concerns a process for preparing compounds of the formula (I) ##STR1## wherein X is halogen,R.sup.1 is a straight or branched chained alkenyl group having 2 to 6 carbon atoms,by clearing the corresponding 1-substituted 2,2,2-trihaloethylesters.
    Type: Grant
    Filed: June 24, 1982
    Date of Patent: May 22, 1984
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyar Rt.
    Inventors: Rudolf Soos, Jozsef Nemes, Laszlo Vidra, Miklos Szelestei, Gabor Kovacs, Istvan Szekeley