Patents Examined by Killos
  • Patent number: 3950398
    Abstract: Water-soluble, polymerizable, acid addition salts of methacrylic acid and 2-mono-(lower)alkylanimoethyl methacrylate whose lower alkyl group is straight or branched chain or cyclic and has up to about 6 carbon atoms, said addition salt includes its methacrylic acid and methacrylate components in the ratio of from about one mole to about 1.5 moles of one of them per mole of the other.
    Type: Grant
    Filed: November 5, 1973
    Date of Patent: April 13, 1976
    Assignee: Normac, Inc.
    Inventor: Max Klein
  • Patent number: 3948908
    Abstract: A pyrido [3,4-d] pyridazine derivative is provided herein of the formula: ##SPC1##Wherein R.sub.1 is hydrogen or an alkyl group of 1 to 4 carbon atoms; R.sub.2 is an alkyl group of 1 to 4 carbon atoms, an aralkyl group of 7 to 8 carbon atoms, or a substituted or unsubstituted phenyl, naphthyl, furyl or pyridyl, the substituent being a lower alkoxy group of 1 to 3 carbon atoms, a lower alkyl group of 1 to 3 carbon atoms, halogen or nitro; R.sub.3 is hydrogen or a lower alkoxy group of 1 to 4 carbon atoms; and R.sub.4 is a substituted or unsubstituted morpholino, piperidino or pyrrolidino, the substituent being methyl or ethyl and a pharmaceutically acceptable salt thereof. The compounds of the present invention have effective and strong diuretic action and exhibit extremely low toxicity characteristics.
    Type: Grant
    Filed: December 15, 1972
    Date of Patent: April 6, 1976
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shojiro Yurugi, Shintaro Kikuchi
  • Patent number: 3946071
    Abstract: Substituted alpha-chloro-methane-sulfenyl chlorides, intermediary chlorinated benzyl sulfides and chlorinated mercaptans useful as herbicides and chemical intermediates for herbicides are prepared by the chlorination of substituted methyl benzyl sulfides and substituted methyl mercaptans.
    Type: Grant
    Filed: December 7, 1973
    Date of Patent: March 23, 1976
    Assignee: Monsanto Company
    Inventor: Wendell Gary Phillips
  • Patent number: 3939199
    Abstract: An improved process for oxacylating olefins in the gaseous phase which comprises using a supported catalyst comprising palladium and a carrier having a total pore volume of from 0.4 to 1.2 ml/g, less than 10% of the total pore volume being attributable to micropores having a diameter of less than 30 A. Catalysts of this type are much more efficient than conventional catalysts.
    Type: Grant
    Filed: June 22, 1973
    Date of Patent: February 17, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Fernholz, Friedrich Wunder, Hans-Joachim Schmidt