Patents Examined by Jean F Vollano
  • Process for decomposing a carbamate aqueous solution coming from the urea recovery section of a urea production plant
    Patent number: 6649795
    Abstract: In a process for decomposing a carbamate aqueous solution coming from a urea recovery section of a urea production plant at a predetermined temperature by indirect heat exchange with a heating fluid having a different predetermined temperature, the temperature difference between said carbamate aqueous solution and said heating fluid is reduced to a value not higher than 70° C.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: November 18, 2003
    Assignee: Urea Casale S.A.
    Inventors: Giorgio Pagani, Federico Zardi, Domenico Romiti
  • Anionic borate ligands and zwitterionic complexes formed therefrom
    Patent number: 6649801
    Abstract: This invention provides an anionic borate ligand, and its synthesis. Zwitterionic complexes formed by the ligand and a metal, and Group 9 and 10 metals in particular, are described. Uses of the complexes in stoichiometric and catalytic reaction chemistry are also provided.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: November 18, 2003
    Assignee: California Institute of Technology
    Inventors: Jonas C. Peters, John C. Thomas, Connie Lu, Theodore A. Betley
  • Process for producing perfluoro(vinyl ether) sulfonic acid derivative
    Patent number: 6649790
    Abstract: A process for preparing a monomer compound represented by formula (II): [wherein M represents an alkali metal or alkaline earth metal; and n is 0, 1 or 2.] by pyrolysis of a compound represented by formula (I) below: [wherein M and n are as defined above.], the pyrolysis being conducted in the presence of a catalyst which has coordinating properties to a metal ion M.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: November 18, 2003
    Assignee: Daikin Industries, Ltd.
    Inventor: Masayoshi Tatemoto
  • Process for producing bishalophenyl disulfide
    Patent number: 6646165
    Abstract: This invention is directed to a process for producing a bishalophenyl disulfide, chracterized by reacting a halothiophenol with an alkali metal hydroxide to obtain an alkali metal halothiophenolate and subsequently converting the halothiophenolate into a disulfide with an oxidizing agent in the presence of a mineral acid. By the process, a bishalophenyl disulfide having a high purity can be industrially produced in high yield.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: November 11, 2003
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Takehiro Hiyama, Hitoshi Karino, Shinji Nii
  • Fluoroborane salts comprising a reactive cation and uses thereof
    Patent number: 6645903
    Abstract: The present invention provides catalyst components comprising a compound having a weakly coordinating anion salt and a reactive cation, in particular a compound of the formula MxQy. Preferably, each M is independently a cation with at least one M being a reactive cation as defined herein. Q is a fluorinated polyhedral borate moiety. And x and y are absolute values of the oxidation states of Q and M, respectively. The present invention also provides processes for using the catalyst components defined herein.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: November 11, 2003
    Assignee: Colorado State University Research Foundation
    Inventors: Steven H. Strauss, Sergei V. Ivanov
  • Processes for the preparation of 1,4-diaryl-2-fluoro-1,3-butadiene and 1,4-diaryl-2-fluoro 2 butene compounds
    Patent number: 6646166
    Abstract: The present invention provides an improved process for the preparation of 1,4-diaryl-2-fluoro-1,3-butadiene compounds of the structural formula I In addition, the present invention provides an improved process for the preparation of 1,4-diaryl-2-fluoro-2-butadiene compounds of the structural formula IV
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: November 11, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Yulin Hu, David Allen Hunt, Keith Douglas Barnes
  • Process for the preparation of 2-[alkyl(aryl)]sulfonylbenzene-sulfonyl chlorides and their intermediates
    Patent number: 6642416
    Abstract: A process for the preparation of 2-[alkyl(aryl)]sulfonylbenzene sulfonyl chlorides of the following formula is provided: in which R is alkyl or aryl substituted at the ortho or meta positions with alkyl, aryl, NHAc or alkoxy, comprising the steps of: a) reacting 2-chloronitrobenzene, 2-fluoronitrobenzene or 2-bromonitrobenzene with a compound of the following formula: RSO2−M+ wherein R is defined above; and M is sodium, potassium, lithium, ammonium or quaternary ammonium, in a polar aprotic solvent at a temperature of about 50 to 190° C.; b) reacting the material prepared in step (a) with hydrogen at a pressure of about 20 to about 60 psi in a polar aprotic solvent at a temperature of about 20 to about 60° C.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: November 4, 2003
    Assignee: Wyeth
    Inventors: Lalitha Krishnan, Bogdan K. Wilk, Jennifer P. Varriano
  • Substituted benzylthioacetic acids and esters
    Patent number: 6642410
    Abstract: Styryl benzylsulfones of formula I are useful as antiproliferative agents, including, for example, anticancer agents: wherein R1 through R10 are defined herein; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: November 4, 2003
    Assignee: Temple University-of the Commonwealth System of Higher Education
    Inventors: E. Premkumar Reddy, M. V. Ramana Reddy
  • Agents for treating neuropathic pain
    Patent number: 6642257
    Abstract: The present invention relates to a compound represented by Formula (I) below: (wherein A represents, for example, phenyl group substituted by R1 and R2, or an unsubstituted furyl group or an unsubstitued thienyl group; R1 represents, for example, hydrogen atom, fluorine atom, chlorine atom, trifluoromethyl group, nitro group, cyano group or methyl group while R2 represents, for example, hydrogen atom; R3 represents, for example, hydrogen atom or methyl group; R4 represents, for example, hydrogen atom or methyl group; R5 represents ethoxy group or isopropoxy group; X represents group: —CH(OH)— or methylene group; and Z represents, for example, a single bond or methylene group unsubstituted or substituted by hydroxyl group), and its salts, and medicinal compositions containing, as their active ingredient, the above compound or its salts.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: November 4, 2003
    Assignee: Mochida Pharmaceutical Co., Ltd.
    Inventors: Ichiro Yamamoto, Manabu Itoh, Fumiaki Yamasaki, Yasushige Akada, Yutaka Miyazaki, Shinichi Ogawa
  • Process for production of thioalkylamine derivatives
    Patent number: 6639109
    Abstract: The present invention relates to a thioalkylamine derivative represented by general formula (I); and a process for production thereof: wherein each of R1 and R2 is H, (C1-C4)alkyl, (C3-C8)cycloalkyl, (C3-C8)cycloalkyl(C1-C4)alkyl, (substituted) phenyl, (substituted) phenyl(C1-C4)alkyl, or the like; each of R3 and R4 is H or a (C1-C4)alkyl group; each of R5 and R6 is H, (C1-C4)alkyl, a (substituted) phenyl group or a (substituted) phenyl(C1-C4)alkyl group; alternatively each of R1 and R2, R1 and R3 or R5, R3 and R4, R3 and R5 or R5 and R6 may together form lower alkylene; and R is (C1-C12)alkyl, (C3-C8)cycloalkyl, (C3-C8)cycloalkyl(C1-C4)alkyl, (substituted) phenyl, (substituted) phenyl(C1-C4)alkyl, a naphthyl group, a (substituted) aromatic heterocyclic, or the like.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: October 28, 2003
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Osamu Sanpei, Kenji Tsubata
  • Method for making dimethyl disulphide compositions having a masked smell
    Patent number: 6639110
    Abstract: A composition based on dimethyl disulphide (DMDS) with a masked smell according to the invention comprises, by weight, at least 95% of DMDS, less than 500 ppm of methyl mercaptan, less than 100 ppm of dimethyl sulphide and up to 1% of at least one odor-masking agent.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: October 28, 2003
    Assignee: Elf Atochem, S.A.
    Inventor: Georges Fremy
  • Fungicides
    Patent number: 6639097
    Abstract: This invention relates to a new fungicidally active compound of formula (I), a method of combating fungi at a locus infested or liable to be infested therewith, and an agricultural composition where X is H or O−A+ and A is a radical (II).
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: October 28, 2003
    Assignee: Bayer Cropscience GmbH
    Inventors: Norman John De'Ath, John Klostermyer
  • 5-thia-&ohgr;-(substituted phenyl)-prostaglandin E alcohols, process for preparing the alcohols and pharmaceutical preparations containing the same as the active ingredient
    Patent number: 6639111
    Abstract: A 5-thia-&ohgr;-substituted phenyl-prostaglandin E alcohol of the formula (I) (wherein, all the symbols are the same meanings as defined in the specification), a process for producing it and a pharmaceutical composition comprising it as an active ingredient.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: October 28, 2003
    Assignee: Ono Pharmaceutical Co., Ltd.
    Inventors: Toru Maruyama, Kaoru Kobayashi
  • 3-oxopropane-1-sulphonic acids and sulphonates
    Patent number: 6639103
    Abstract: The invention relates to 1,3-disubstituted-3-oxopropane-1-sulfonic acids and sulfonates and enantiomerically inriched forms thereof. The invention further relates to the use of these enantiomerically inriched compounds to resolve mixtures of enantiomers, in particular mixtures of enantiomers of amino-functionalized compounds.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: October 28, 2003
    Assignee: DSM N.V.
    Inventors: Hans Wijnberg, Kees Pouwer, Jose Nieuwenhuijzen, Ton Rene Vries
  • Process for the preparation of acyloxybenzenesulfonates
    Patent number: 6639096
    Abstract: Process for the preparation of acyloxybenzenesulfonates by reaction of phenolsulfonate with a water content of less than 0.5% by weight and alkanecarbonyl halide in a hydrocarbon as solvent and in the presence of a catalyst in the form of a basic nitrogen-containing compound.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: October 28, 2003
    Assignee: Clariant GmbH
    Inventors: Gerd Reinhardt, Peter Naumann, Miriam Ladwig, Ina Golla, Torsten Pilz, Reto Wieduwilt, Henri Jourdan
  • Process for the preparation of arylamides of heteroaromatic carboxylic acids
    Patent number: 6635766
    Abstract: A process for the preparation of arylamides of heteroaromatic carboxylic acids of the formula: in which each An is nitrogen or CRn(n=1 to 5), with the proviso that at least one of the ring members is nitrogen and that two nitrogen atoms are not bonded directly to one another; R1 to R5, if present, independently of one another; C1-4-alkyl or aryl, one of the substituents R1 to R5 being a group of the formula —OR, in which R is an optionally substituted aromatic or heteroaromatic radical; R6 is hydrogen or C1-4-alkyl; and R7 is an optionally substituted aromatic or heteroaromatic radical. The amides are obtained from the corresponding heteroaromatic halogen compounds, the corresponding aromatic amines and carbon monoxide in the presence of palladium diphosphine complex. Compounds of this class (Formula I) are important herbicides.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: October 21, 2003
    Assignee: Lonza AG
    Inventors: Jean-Paul Roduit, Georges Kalbermatten
  • Method for synthesizing hydrazodicarbonamide
    Patent number: 6635785
    Abstract: A method for synthesizing hydrazodicarbonamide (HDCA) by a reaction of monohalobiuret metal salt having the formula 1 or 2, which is derived from biuret, and ammonia, wherein M is a metal and X is a halogen. The monohalobiuret metal salt is inexpensive and easy to synthesize and thus a great yield of HDCA can be obtained from the monohalobiuret metal salt at low cost.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: October 21, 2003
    Assignee: J&J Chemical Co., Ltd.
    Inventors: Chun-Hyuk Lee, Sang-Jin Han
  • Production of optically active phospholanes
    Patent number: 6632953
    Abstract: Phospolanes and diphospholanes of the general formula I where: is H, C1-C6-aryl, alkylaryl, SiR32, R2 is alkyl or aryl, A is H, C1-C6-alkyl, aryl, Cl or B is a linker with 1-5 C atoms between the two P atoms, and their use as catalyst in asymmetric synthesis.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: October 14, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Stürmer, Armin Börner, Jens Holz, Gudrun Voss
  • Method for separating a diphosphine diastereoisomers
    Patent number: 6632969
    Abstract: A process for separating the (d/l) and (meso) diastereoisomers of bis-[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene] comprising converting the mixture of diastereoisomers of bis-[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene] to a mixture of the corresponding diastereoisomers of diphosphine disulphide or dioxide, then in separating the two diastereoisomers in dioxide or disulphide form.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: October 14, 2003
    Assignee: Rhodia Chimie
    Inventors: Michel Spagnol, Francois Mathey, Francois Mercier, Frederic Robin
  • Diaryliodonium salt catalysts made from iodotoluene and a method for preparing them
    Patent number: 6632960
    Abstract: Diaryliodonium salts are disclosed, as well as a method for preparing them, in which one of the aryl groups bonded to the positively-charged iodine ion contains a methyl substituent, and the other one contains a hydroxyl-substituted alkoxy group. The salts are synthesized from (o, m, or p)-iodotoluene, as opposed to iodobenzene, and therefore do not pose a carcinogenic risk. In addition, the present salts are unexpectedly more soluble in most organic solvents, as well as in nonpolar monomers, than the corresponding benzene catalysts. The salts are useful as cationic photoinitiators, cationic thermal initiators (often combined with a cocatalyst, e.g. copper), and as starting materials in the synthesis of urethane-containing iodonium salts.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: October 14, 2003
    Assignees: Goldschmidt AG, Polyset Chemical Company Inc.
    Inventors: James V. Crivello, Georg Feldmann-Krane, Sascha Oestreich