Patents Examined by Carol L. Cseh
  • Patent number: 4973690
    Abstract: The present invention relates to novel N-phenyl-N-pyrimidin-2-ylureas having a herbicidal and plant growth-regulating activity, to agrochemical compositions that contain those substances as active ingredients, to the use of the novel ureas for controlling weeds or for regulating plant growth, and to processes for the preparation of the novel compounds. The invention also relates to novel intermediates and to processes for the preparation thereof.The novel compounds correspond to formula I ##STR1## in which the radicals R.sup.1 to R.sup.6 have the meanings given in the text.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: November 27, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Hermann Rempfler, Dieter Durr
  • Patent number: 4929724
    Abstract: The invention is directed to a process for the production of uretdione group-containing compounds by dimerizing at least a part of the isocyanate groups of organic isocyanates in the presence of compounds containing phosphorus-nitrogen bonds as dimerization catalysts, characterized in that the reaction is carried out in the presence, as co-catalysts, of H-active organic compounds having a pKa-value of at least 6, which have at least one hydrogen atom bound to oxygen, sulphur or nitrogen.The invention also relates to the uretdione group-containing compounds obtained according to this process and to their use for the production of plastics materials according to the isocyanate-polyaddition process.
    Type: Grant
    Filed: October 3, 1985
    Date of Patent: May 29, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Theodor Engbert, Jurg Frohlich, Werner Kubitza, Peter Breidenbach, Gerhard Mennicken
  • Patent number: 4882333
    Abstract: N-alkanoylglutamic acid derivatives in which the alkanoyl group is substituted with the 2-amino-4-hydroxy-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidine-6-yl or 2,4-diamino-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-6-yl group are antineoplastic agents. Typical embodiments are N-[6-(2-amino-4-hydroxy-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-6-yl)hexa noyl]-L-glutamic acid and N-[4-{-(2-amino-4-hydroxy-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidin-6-yl ethyl}cyclohex-1-yl]-L-glutamic acid.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: November 21, 1989
    Assignees: The Trustess of Princeton University, Eli Lilly and Company
    Inventors: Chuan Shih, Edward C. Taylor
  • Patent number: 4871844
    Abstract: Novel diazepinium compounds having the structural formula: ##STR1## wherein R.sup.2 and R.sup.4 are individually alkyl of 3 to 7 carbon atoms R.sup.5, R.sup.6 and R.sup.7 are individually H or alkyl; and X.crclbar. is an anion. The compounds are of the class of amidiniums, useful as dyes. The compounds are particularly useful in antireflective layers having unexpected thermal resistance for use in photoresist applications.
    Type: Grant
    Filed: April 28, 1987
    Date of Patent: October 3, 1989
    Assignee: Eastman Kodak Company
    Inventors: Thap DoMinh, Donald R. Diehl
  • Patent number: 4854964
    Abstract: Novel herbicides of the formula ##STR1## in which R.sup.1 represents alkyl,R.sup.2 represents hydrogen, alkyl, alkylcarbonyl, alkoxycarbonyl, alkylsulphonyl, alkenyl, alkinyl or optionally substituted aralkyl, andR.sup.3 represents optionally substituted aryl.Intermediates of the formula ##STR2## in which R.sup.6 is hydrogen, chlorine or hydroxyl,are also new.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: August 8, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Jelich, Hans-Joachim Santel, Robert R. Schmidt, Harry Strang
  • Patent number: 4855452
    Abstract: Process for the preparation of a compound of formula or a salt thereof ##STR1## wherein R.sub.1 represents a hydrogen atom or a group of formula R.sub.2 SO.sub.2 or phenyl--CH(R.sub.3)-- wherein R.sub.2 represents a phenyl, tolyl or C.sub.1-4 alkyl group and R.sub.3 represents a hydrogen atom or a phenyl or C.sub.1-4 alkyl group, which process comprises contacting nickel in an oxidation state of at least 3 with a 3-hydroxymethyl azetidine derivative of formula ##STR2## wherein R.sub.4 represents a group of formula R.sub.2 SO.sub.2 or phenyl--CH(R.sub.3)-- and R.sub.5 represents a hydrogen atom or a hydroxymethyl group or a group of formula COOH or a salt thereof, followed, where R.sub.5 is not a hydrogen atom, by the decarboxylation of the compound of the 3,3-dicarboxylic intermediate product or a salt thereof and, if desired to produce a compound in which R.sub.1 represents a hydrogen atom, by deprotection of the N-atom.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: August 8, 1989
    Assignee: Shell Oil Company
    Inventors: Pieter A. Verbrugge, Jannetje de Waal, David W. Sopher