Patents by Inventor Sandor Szoke

Sandor Szoke 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 6-demethyl-6-deoxy-6-methylene-5-oxytetracyclin and the 11A-chloro-derivative thereof
    Patent number: 4659515
    Abstract: The invention relates to a new and improved process for the preparation of 6-demethyl-6-deoxy-6-methylene-5-oxytetracycline and the 11a-chloro derivative thereof by dehydrating 11a-chloro-5-oxytetracycline-6,12-hemiketal, which comprises treating 11a-chloro-5-oxytetracycline-6,12-hemiketal or an acid salt thereof with a dehydrating mixture formed by the reaction of chloro sulfonic acid and formic acid and isolating the 11a-chloro-6-demethyl-6-deoxy-6-methylene-5-oxytetracycline and salt thus obtained and optionally dehalogenating the same by reaction with a reducing agent.The advantage of the process of the present invention is that it is simple, economical and suitable for industrial scale manufacture and provides a pure product of high quality by excellent yields.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: April 21, 1987
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt
    Inventors: Gyorgy Lugosi, Maria Hima nee Toth, Maria Bakonyi, Sandor Szoke
  • Process for preparing alkylthiobenzimidazoles
    Patent number: 4368328
    Abstract: The invention concerns a new process for the preparation of biologically active 2-[(alkoxycarbonyl)amino]-5-(alkylthio)-1H-benzimidazoles of the general formula (V) ##STR1## wherein R and R.sup.1 independently stand for alkyl having 1 to 3 carbon atoms.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: January 11, 1983
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
    Inventors: Sandor Szoke, Gyorgy Lugosi, Maria Bakonyi, Jeno Ghyczy, Gyorgy Csermely
  • Aluminum alloys having a high reducing capacity and preparation thereof
    Patent number: 4273679
    Abstract: This invention relates to a process for the preparation of aluminum alloys having a high reducing capacity for use in reductions in organic chemistry. According to this method a discontinuous heterodisperse superficial alloy is formed by subjecting an aluminum alloy prepared by a metallurgical process to superficial activation and/or treating aluminum with a salt of a metal having a greater normal electrode potential than that of aluminum; whereby the solution of said metal in a protic solvent is reacted with granular aluminum and/or an aluminum alloy. The catalyst prepared according to the invention is especially suitable for the reduction of a nitro or nitroso group into an amino group. The aluminum alloys having a high reducing capacity are also within the scope of the invention.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: June 16, 1981
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
    Inventors: Jeno Ghyczy, Sandor Szoke, Gyorgy Csermely
  • Water-soluble 1 and/or 2 acid alkylene imidazoles
    Patent number: 3978217
    Abstract: Compounds of the formula, ##SPC1##WhereinR.sup.1 and R.sup.2 each stand for hydrogen or a group of the generalformula --(CH.sub.2).sub.n --SO.sub.3 H,n is an integer between 1 and 5, andR.sup.3 stands for an alkyl group,As well as the salts and quaternary salts thereof have been prepared by various methods. The new compounds according to the invention possess valuable fungicidal and/or ovicidal properties, and can be used as active ingredients of plantbiological compositions, cosmetics and pharmaceuticals, respectively.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: August 31, 1976
    Assignee: Chinoin Gyogyszer-es Vegyeszeti Termekek Gyara RT
    Inventors: Sandor Szoke, Gyorgy Lugosi, Gyorgy Csermely, Maria Bakonyi, Tibor Zsolnai, Istvan Szepessy