Patents Examined by Susan Treanor
  • Famotidine intermediates and their preparation
    Patent number: 5068405
    Abstract: Halogenated N-sulfamyl propionamidine addition salts corresponding to the formula ##STR1## are provided, in which X represents halogen and A represents an acid selected from sulfuric acid, nitric acid, benzenesulfonic acid; toluenesulfonic acid; 2,4,5-trichlorobenzenesulfonic acid; trichloroacetic acid; trifluoroacetic acid or methanesulfonic acid. They are useful as intermediates in the preparation of famotidine. They are prepared by reacting a halogenated propionitrile with the respective acid.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: November 26, 1991
    Assignee: Delmar Chemicals Inc.
    Inventors: Michel Bekhazi, Josef Oren
  • Polyglycidol amine oxide surfactants having antimicrobial activity
    Patent number: 5059625
    Abstract: The present invention relates to novel compounds represented by the formula: ##STR1## wherein R is an alkyl group having from about 8 to about 18 carbon atoms, and mixtures thereof, n has a value of from 1 to 6, R.sub.1 is selected from the group consisting of an alkyl group having from 1 to about 12 carbon atoms, or ##STR2## where the sum of n+m=2 to 12. These compounds possess antimicrobial activity and are useful as cleaning agents and preservatives, particularly in water-based functional fluids and surface coating compositions.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: October 22, 1991
    Assignee: Olin Corporation
    Inventors: Michael Scardera, Frank R. Grosser
  • Method of preparing amino alcohols
    Patent number: 5053545
    Abstract: A method of preparing an amino alcohol of the formula ##STR1## where R.sub.1 is H, lower alkyl or R.sub.2, R.sub.2 is R.sub.3 CHOH in which R.sub.3 is H, alkyl or aryl. R.sub.3 preferably is hydrogen, lower alkyl or monocyclic aryl such as phenyl. The inventive method involves the reaction of halonitroalcohol with hydrogen in the presence of methanol, a suitable buffering agent such as ammonia, and a hydrogenation catalyst to form amino alcohol salt, neutralizing the amino alcohol salt, and recovering the resultant amino alcohol.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: October 1, 1991
    Assignee: Angus Chemical Company
    Inventors: Thomas H. Marman, Vincent Nocito
  • Method of treating pineapples to inhibit opening of the pineapple flowers
    Patent number: 4834790
    Abstract: Pineapple plants are chemically treated in the field with effective amounts of an aqueous solution of a nonionic or anionic surfactant to inhibit opening of the pineapple flowers, so that the susceptibility of the pinapple plant to fruit disease is reduced.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: May 30, 1989
    Assignee: Del Monte Corporation
    Inventors: Faustino P. Obrero, Wilfred H. Schnitzler
  • Process for the production of diphenylamine
    Patent number: 4814504
    Abstract: Diphenylamine is produced by contacting aniline with an alumina catalyst having at least about 30 percent by volume of its total porosity in the form of pores having a diameter of between about 120 and about 200 Angstroms and a sulfur content, as measured in the form of SO.sub.4, of less than about 0.02 percent by weight at between about 380.degree. and 475.degree. C.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: March 21, 1989
    Assignee: Uniroyal Chemical Company, Inc.
    Inventor: Russell E. Malz, Jr.
  • N-sulfonyl-imino-thiocarbonic acid diesters as herbicide antagonists for the protection of rice crops
    Patent number: 4740236
    Abstract: N-Sulfonyliminothiocarbonic acid diesters protect rice crops from phytotoxic damage caused by herbicides.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: April 26, 1988
    Assignee: Ciba-Geigy Corporation
    Inventor: Werner Topfl