Patents Examined by Chabi C. Kalita
  • 4-(2-Fluoro-4-halo-5-substituted phenyl)urazols, and their production and use
    Patent number: 4452981
    Abstract: A condensed phenylurazol of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom, Y and Z are each an oxygen atom or a sulfur atom and R is a C.sub.1 -C.sub.3 alkyl group, an allyl group or a propargyl group and n is an integer of 4 or 5, which is useful as a herbicide.
    Type: Grant
    Filed: September 15, 1982
    Date of Patent: June 5, 1984
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Eiki Nagano, Shunichi Hashimoto, Ryo Yoshida, Hiroshi Matsumoto, Katsuzo Kamoshita
  • Preparation of 2-hydroxyquinoxaline
    Patent number: 4450271
    Abstract: An improved procedure for the manufacture of 2-hydroxyquinoxalines from reacting a dialkyl tartrate with a periodate, adjusting the pH of the resulting reaction mixture, and condensing said mixture with an o-phenylenediamine.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: May 22, 1984
    Assignee: Industrial Technology Research Institute
    Inventors: Tsung-Tsan Su, Yu-Chen Cheng
  • Antiatherosclerotic 1-piperazine-thicarboxamides
    Patent number: 4450272
    Abstract: This disclosure describes 4-heteroaryl-1-piperazinethiocarboxamides useful in the treatment of atherosclerosis in mammals.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: May 22, 1984
    Assignee: American Cyanamid Company
    Inventors: Mila T. Du, Robert G. Shepherd
  • 2-Ethyl hexyl and isobornyl methyl carbonates
    Patent number: 4447365
    Abstract: Described are the alkyl and bicycloalkyl methyl carbonates defined according to the structure: ##STR1## wherein R represents 2-ethyl hexyl, having the structure: ##STR2## or isobornyl having the structure: ##STR3## and uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: May 8, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Richard M. Boden, Michael Licciardello, Theodore J. Tyszkiewicz
  • Tetra- and hexa-hydropyrrolo(1,2-a)quinoxaline and azaquinoxaline derivatives
    Patent number: 4446323
    Abstract: Tetra- and hexa-hydropyrrolo[1,2-a]quinoxaline and azaquinoxaline derivatives of the formula: ##STR1## in which X is O or H.sub.2 ;Y is CH or N;R is hydrogen, alkyl, dialkylaminoalkyl, arylalkyl, phenoxyalkyl, benzoyl, pyridylalkyl or variations thereof; andR.sup.1 is hydrogen, alkyl, alkoxy, nitro, halo, trifluoromethyl, amino, alkylamino or dialkylamino;or pharmaceutically acceptable salts thereof; are anti-hypertensive agents.
    Type: Grant
    Filed: May 23, 1983
    Date of Patent: May 1, 1984
    Assignee: American Home Products Corporation
    Inventors: Meier E. Freed, Magid Abou-Gharbia
  • Herbicidally active quinoline or quinoxaline acetophenone oxime derivatives
    Patent number: 4440930
    Abstract: Disclosed are certain herbicidally active quinoline or quinoxaline acetophenone oxime derivatives, herbicidal compositions containing these compounds and the use of such compounds to control the growth of noxious plants, i.e., weeds.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: April 3, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Dennis K. Krass, Sidney B. Richter
  • Methyl carbonate of .alpha.,3,3-trimethyl cyclohexane methanol, organoleptic uses thereof and process for preparing same
    Patent number: 4435331
    Abstract: Described is the methyl carbonate of .alpha.,3,3-trimethyl cyclohexane methanol defined according to the structure: ##STR1## and uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles such as solid or liquid anionic, cationic, nonionic or zwitterionic detergents, fabric softeners, fabric softener articles as well as hair sprays, shampoos and bath oils and perfumed polymers. Also described is a process for preparing the methyl carbonate of .alpha.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: March 6, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Michael Licciardello, Richard M. Boden
  • Preparation of carbonate esters in the presence of sulfones
    Patent number: 4426331
    Abstract: A process for the oxidative carbonylation of an alcohol to produce a carbonate, which comprises reacting together carbon monoxide, oxygen and an alcohol, in the presence of a copper compound and in the presence of a sulfone.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: January 17, 1984
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Nitrobenzofurazan derivatives
    Patent number: 4395556
    Abstract: Nitrobenzofurazan derivatives having the formula ##STR1## are provided wherein R.sub.1 and R.sub.2 each is hydrogen, lower alkyl or phenyl-lower alkyl; R.sub.3 is hydrogen, hydroxy or lower alkyl; R.sub.4 is hydrogen or lower alkyl; m is 2 or 3; and n is 0, 1 or 2; these compounds are useful analytical tools.
    Type: Grant
    Filed: February 4, 1982
    Date of Patent: July 26, 1983
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Callixtus E. Ita, Anthony F. Heald, Peter Egli