Plural Ring Sulfurs In The Hetero Ring Patents (Class 549/19)
  • Patent number: 8742136
    Abstract: It is an object of the present invention to provide a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield, the present invention discloses a method for producing a cyclic disulfonic acid ester represented by the general formula (3), which comprises reacting a silver alkanedisulfonate represented by the general formula (1) with a dihaloalkane represented by the general formula (2) in a nonpolar solvent. Wherein X1 and X2 are each independently a chlorine atom, a bromine atom or an iodine atom; and Y and Z are each independently a substituted or unsubstituted alkylene chain which may have a heteroatom in the chain.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: June 3, 2014
    Assignee: Wako Pure Chemical Industries, Ltd.
    Inventors: Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino
  • Patent number: 8501966
    Abstract: The present invention provides a method for producing a methylene disulfonate compound including reacting, in the presence of an acid and a dehydrating agent, a formaldehyde compound with at least one salt of alkanedisulfonic acid selected from the group consisting of alkali metal salts of alkanedisulfonic acid and alkaline earth metal salts of alkanedisulfonic acid each represented by a specific formula. According to the method of the present invention, a methylene disulfonate compound can be obtained in a simple manner at low cost.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: August 6, 2013
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Seiji Bando, Takeshi Fujiwara, Hiroyuki Shiraishi, Takehiro Hiyama
  • Publication number: 20130137881
    Abstract: The present invention provides a method for producing a methylene disulfonate compound including reacting, in the presence of an acid and a dehydrating agent, a formaldehyde compound with at least one salt of alkanedisulfonic acid selected from the group consisting of alkali metal salts of alkanedisulfonic acid and alkaline earth metal salts of alkanedisulfonic acid each represented by a specific formula. According to the method of the present invention, a methylene disulfonate compound can be obtained in a simple manner at low cost.
    Type: Application
    Filed: July 27, 2011
    Publication date: May 30, 2013
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Seiji Bando, Takeshi Fujiwara, Hiroyuki Shiraishi, Takehiro Hiyama
  • Patent number: 8383551
    Abstract: The present invention relates to new thienodithiine derivatives, to processes for preparing them, to their use for controlling unwanted microorganisms, more particularly phytopathogenic fungi, in crop protection, in the household and hygiene sector and in the protection of materials, and also to crop protection compositions comprising these thienodithiine derivatives.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: February 26, 2013
    Assignee: Bayer CropScience AG
    Inventors: Thomas Seitz, Jürgen Benting, Ulrike Wachendorff-Neumann
  • Patent number: 8278410
    Abstract: Fused thiophene (FT) compounds, FT polymers, FT containing articles, and methods for making and using the FT compounds and polymers thereof of the formulas, as defined herein.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: October 2, 2012
    Assignee: Corning Incorporated
    Inventors: Mingqian He, Thomas Mark Leslie, Weijun Niu
  • Publication number: 20120208850
    Abstract: The invention relates to methods, compounds, and compositions for delivering 1,3-propanedisulfonic acid (1,3PDS) in a subject, preferably a human subject. The invention encompasses compounds that will yield or generate 1,3PDS, either in vitro or in vivo. The invention also relates to sulfonate ester prodrugs of 1,3PDS as well as Gemini dimmers and oligomers of 1,3PDS for the prevention or treatment of associated diseases and conditions.
    Type: Application
    Filed: August 6, 2010
    Publication date: August 16, 2012
    Applicant: BELLUS HEALTH INC.
    Inventors: Xianqi Kong, Nigel Levens, Abderrahim Bouzide, Stephane Ciblat, Richard Frenette, Johanne Renaud
  • Publication number: 20110306531
    Abstract: Novel sulfur-containing compositions comprise a polyether polysulfide or an ether polysulfide. The polyether polysulfide may be based upon an alkoxylate (an alcohol or glycol-initiated compound) that is a copolymer of at least two of ethylene oxide, propylene oxide and butylene oxide. The polyether polysulfide may alternatively be based upon a homopolymer of ethylene oxide, propylene oxide or butylene oxide. The ether polysulfide may be based upon a methoxy-capped polyglycol or an alkyl ether of 1,3-dichloro-2-propanol.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 15, 2011
    Inventors: Yang Cheng, Cynthia L. Rand, John B. Cuthbert
  • Patent number: 7919634
    Abstract: Fused thiophene (FT) compounds, FT polymers, FT containing articles, and methods for making and using the FT compounds and polymers thereof of the formulas, as defined herein.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: April 5, 2011
    Assignee: Corning Incorporated
    Inventors: Mingqian He, Thomas Mark Leslie, Weijun Niu
  • Patent number: 7829730
    Abstract: The present invention provides a process for producing a methylene disulfonate compound in a simple manner at low cost. The present invention provides a process for producing a methylene disulfonate compound represented by General Formula (2) comprising: reacting, in the presence of a dehydrating agent, a formaldehyde compound with a sulfonic acid compound represented by General Formula (1): wherein R1 and R2 are independently a hydrogen atom or a C1-4 alkyl group whose hydrogen atom may be substituted with halogen atom; n is an integer from 1 to 4; and when n is an integer from 2 to 4, n R1s and n R2s may be the same or different: wherein, R1, R2, and n are the same as those described above for General Formula (1).
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: November 9, 2010
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Takehiro Hiyama, Takeshi Takeuchi, Hidehiko Myoken, Hirokazu Kagano
  • Publication number: 20090281333
    Abstract: It is an object of the present invention to provide a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield, the present invention discloses a method for producing a cyclic disulfonic acid ester represented by the general formula (3), which comprises reacting a silver alkanedisulfonate represented by the general formula (1) with a dihaloalkane represented by the general formula (2) in a nonpolar solvent. Wherein X1 and X2 are each independently a chlorine atom, a bromine atom or an iodine atom; and Y and Z are each independently a substituted or unsubstituted alkylene chain which may have a heteroatom in the chain.
    Type: Application
    Filed: June 14, 2007
    Publication date: November 12, 2009
    Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.
    Inventors: Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino
  • Publication number: 20090137820
    Abstract: The present invention provides a process for producing a methylene disulfonate compound in a simple manner at low cost. The present invention provides a process for producing a methylene disulfonate compound represented by General Formula (2) comprising: reacting, in the presence of a dehydrating agent, a formaldehyde compound with a sulfonic acid compound represented by General Formula (1): wherein R1 and R2 are independently a hydrogen atom or a C1-4 alkyl group whose hydrogen atom may be substituted with halogen atom; n is an integer from 1 to 4; and when n is an integer from 2 to 4, n R1s and n R2s may be the same or different: wherein, R1, R2, and n are the same as those described above for General Formula (1).
    Type: Application
    Filed: April 4, 2007
    Publication date: May 28, 2009
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Takehiro Hiyama, Takeshi Takeuchi, Hidehiko Myoken, Hirokazu Kagano
  • Patent number: 6995276
    Abstract: A compound capable of giving optical materials that may be high in both refractive index and Abbe's number and may be excellent in heat resistance and transparency, and a process that may produce the same with good efficiency are disclosed. The compound may be a cyclic disulfide compound including a structure represented by the following general formula (1) or (2) and having a sulfur content of from 50 to 85% by weight: wherein X represents a chain having carbon and/or sulfur as a skeleton, inclusive of cyclic ones; and the number of elements constituting X is from 1 to 4.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: February 7, 2006
    Assignee: Hoya Corporation
    Inventors: Tsuyoshi Okubo, Ken Takamatsu
  • Patent number: 6767918
    Abstract: Disclosed are compounds which inhibit &bgr;-amyloid peptide release and/or its synthesis, and, accordingly, have utility in treating Alzheimer's disease. Also disclosed pharmaceutical compositions comprising a compound which inhibits &bgr;-amyloid peptide release and/or its synthesis as well as methods for treating Alzheimer's disease both prophylactically and therapeutically with such pharmaceutical compositions.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: July 27, 2004
    Assignees: Athena Neurosciences, Inc., Eli Lilly & Company
    Inventors: Jing Wu, Eugene D. Thorsett, Jeffrey S. Nissen, Thomas E. Mabry, Lee H. Latimer, Varghese John, Lawrence Y. Fang, James E. Audia
  • Patent number: 6727258
    Abstract: The present invention relates to compounds of formula (IA): the preparation thereof, pharmaceutical formulations thereof, and their use in medicine as allosteric adenosine receptor modulators for uses including protection against hypoxia and ischemia induced injury and treatment of adenosine-sensitive cardiac arrhythmias.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: April 27, 2004
    Assignee: King Pharmaceutical Research & Development, Inc.
    Inventor: Pier Giovanni Baraldi
  • Patent number: 6706894
    Abstract: A thiol compound useful as a starting material for optical materials that have a high refractive index and a high Abbe's number is provided. A method for producing the same is also provided. The thiol compound may be represented by the general formula (1): wherein n is 1 or 2. A method for producing the thiol compound represented by the general formula (1), via an intermediate, i.e., 1,3,5-trithiane having a methylene or vinyl group at the 2,4,6-positions thereof, wherein the groups at the 2-, 4-, and 6-positions may be identical or different, is also provided.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: March 16, 2004
    Assignee: Hoya Corporation
    Inventors: Tsuyoshi Okubo, Ken Takamatsu
  • Patent number: 6696540
    Abstract: An episulfide compound useful as a starting material for optical materials that have a high refractive index and a high Abbe's number is provided. A method for producing the same and an optical product made with the same are also provided. The episulfide compound may be represented by the general formula (1): wherein EP represents and n is an integer of from 0 to 2. A method for producing the episulfide compound represented by the general formula (1) may involve reacting a mercapto group-containing episulfide compound with 2,4,6-trimethylene-1,3,5-trithiane.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: February 24, 2004
    Assignee: Hoya Corporation
    Inventors: Tsuyoshi Okubo, Ken Takamatsu
  • Publication number: 20030114630
    Abstract: A thiol compound useful as a starting material for optical materials that have a high refractive index and a high Abbe's number is provided. A method for producing the same is also provided.
    Type: Application
    Filed: November 22, 2002
    Publication date: June 19, 2003
    Applicant: Hoya Corporation
    Inventors: Tsuyoshi Okubo, Ken Takamatsu
  • Patent number: 6458908
    Abstract: A sulfur-containing unsaturated carboxylate compound comprising a sulfur-containing substituent and at least two &agr;,&bgr;-unsaturated carboxylic acid residues, which are each attached to a secondary or tertiary carbon atom via an oxygen atom; a polymerizable composition comprising the sulfur-containing unsaturated carboxylate compound; a cured product prepared by polymerizing the polymerizable composition; an optical component consisting of the cured product; and novel intermediate compounds for preparation of the above carboxylate.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: October 1, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masao Imai, Kenichi Sugimoto, Kenichi Fujii, Atsuo Otsuji, Tadashi Ohkuma, Masatoshi Takagi, Rihoko Suzuki, Keisuke Takuma
  • Patent number: 6071861
    Abstract: The dihalopropene compounds of the general formula [I ] have excellent insecticidal/acaricidal activity, so that they are satisfactorily effective for the control of noxious insects, mites and ticks.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: June 6, 2000
    Assignee: Sumitomo Chemical Company, Inc.
    Inventors: Noriyasu Sakamoto, Sanshiro Matsuo, Masaya Suzuki, Taro Hirose, Kazunori Tsushima, Kimitoshi Umeda
  • Patent number: 5698690
    Abstract: The invention provides hydroxamic acid derivatives of the general formula ##STR1## wherein Bz represents benzyl; R.sup.1 represents cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl; R.sup.2 represents a saturated 5- to 8-membered monocyclic or bridged N-heterocyclic ring, which N-heterocyclic ring is attached via the N atom and when it is monocyclic, optionally contains NR.sup.4, O, S, SO or SO.sub.2 as a ring member and/or is optionally substituted on one or more C atoms by hydroxy, lower alkyl, lower alkoxy, oxo, ketalized oxo, amino, mono(lower alkyl)amino, di(lower alkyl)amino,carboxy, lower alkoxycarbonyl, hydroxy-methyl, lower alkoxymethyl, carbamoyl, mono(lower alkyl)-carbamoyl, di(lower alkyl)carbamoyl or hydroxy-imino; R.sup.3 represents a 5- or 6-membered N-heterocyclic ring which (a) is attached via the N atom, (b) optionally contains N, O and/or S, SO or SO.sub.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: December 16, 1997
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Michael John Broadhurst, Paul Anthony Brown, William Henry Johnson
  • Patent number: 5674894
    Abstract: The current invention discloses novel amidine derivatives with nitric oxide donating property that can inhibit platelet aggregation and promote vasodilation in a single compound.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: October 7, 1997
    Assignee: G.D. Searle & Co.
    Inventors: Mark G. Currie, Foe S. Tjoeng, Mark E. Zupec
  • Patent number: 5356924
    Abstract: Compounds of the general formula: ##STR1## wherein R.sub.1 and R.sub.2 each independently represents a halogen atom or an alkyl, alkoxy, haloalkyl, haloalkoxy, alkoxycarbonyl, alkenoxy, cyano or nitro group; R.sub.3 and R.sub.4 each independently represents a hydrogen atom or an alkyl group; R.sub.5 represents a hydrogen atom, or an alkyl, alkoxy or alkoxycarbonylalkyl group; X and Y each independently represents an oxygen or sulphur atom or a group N--R, in which R is a hydrogen atom or an alkyl group; n is 0-3; r is 0 or 1; m is 0-4; and A or B represents a group of the general formula: ##STR2## wherein R.sub.6 represents a hydrogen or halogen atom, or an alkyl group; and R.sub.7 represents a halogen atom or an alkyl group; the other of A and B being a hydrogen atom or as for R.sub.1 or R.sub.2, have useful pesticidal activity.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: October 18, 1994
    Assignee: Shell Research Limited
    Inventors: Martin Anderson, Antony G. Brinnand, Roger E. Woodall
  • Patent number: 5237067
    Abstract: This application is directed to optoelectronic materials which are bistable organic tautomeric compositions of dithio or diseleno carbamate esters of cyclic 1,3-dithia or -diselena-2-iminium salts. Specifically, it is concerned with compounds having the formula: ##STR1## Wherein X is S or Se; wherein R or R.sub.1 are alkyl, or alkyl that together form a ring of carbon atoms; wherein An is the anion of a strong acid. These molecules are in themselves molecular-sized optoelectric switching devices.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: August 17, 1993
    Inventor: Robert R. Schumaker
  • Patent number: 5045562
    Abstract: 1,3,5-trithiane derivatives represented by the formula (I) ##STR1## wherein the substituents are defined herein, are disclosed. The trithiane derivatives and their compositions are useful as anti-arteriosclerotic or anti-hyperlipemic agents.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: September 3, 1991
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Masashi Nagamine, Kunikazu Hiraga, Atsushi Sakai, Matazaemon Uchida
  • Patent number: 4987130
    Abstract: Substituted amino derivatives represented by the formula: ##STR1## wherein R.sup.1 and R.sup.2 each stand for an acyclic hydrocarbon residue or an alicyclic hydrocarbon residue; R.sup.3 and R.sup.4 each stand for hydrogen or a hydrocarbon residue optionally containing hetero-atom(s); A stands for a carbon chain having two or more carbon atoms optionally containing ether linkage or sulfide linkage, which may be substituted and which may per se form a ring; X.sup.1 and X.sup.2 each stand for oxygen atom or sulfur atom; and Y stands for amino group or an organic residue bonded through nitrogen atom, which may form a ring by combining with a carbon atom constituting A; and their salts have anti-arrhythmic activity and are useful for prevention and treatment of a variety of arrhythmias.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: January 22, 1991
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Susumu Tsushima, Muneo Takatani, Minoru Hirata
  • Patent number: 4816475
    Abstract: An anti-arteriosclerotic or anti-hyperlipemic 1,3,5-trithiane derivative according to the formula (I): ##STR1## a pharmaceutical composition containing the same, and a process for producing the same.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: March 28, 1989
    Assignee: Nihon Nohyaku Co. Ltd.
    Inventors: Masashi Nagamine, Kunikazu Hiraga, Atsushi Sakai, Matazaemon Uchida
  • Patent number: 4761486
    Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1, R.sup.2, A and X have the meanings given in the disclosure, a process for their manufacture, herbicidal and plant growth-regulating agents containing the novel active ingredients, and methods of combating unwanted plant growth and of regulating plant growth.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: August 2, 1988
    Assignee: BASF Aktiengesellschaft, Patentabteilung
    Inventors: Bernd Zeeh, Dieter Jahn, Michael Keil, Dieter Kolassa, Bruno Wuerzer, Norbert Meyer, Wilhelm Rademacher, Johann Jung
  • Patent number: 4725682
    Abstract: Sulfur-containing bis-amino carbamate compounds exhibit outstanding acaricidal, nematocidal and insecticidal activity.
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: February 16, 1988
    Assignee: Rhone-Poulenc Nederland, B.V.
    Inventor: Themistocles D. J. D'Silva
  • Patent number: 4614821
    Abstract: This invention relate to a process for producing a 1,2,3-trithiane compound of the general formula: ##STR1## wherein each of R.sub.1 and R.sub.2 is independently a lower alkyl group, or alternatively, R.sub.1 and R.sub.2 together with the adjacent nitrogen atom form a 5- or 6-membered heterocyclic group which may further contain an oxygen, sulfur or nitrogen atom, or a salt thereof, which comprises reacting a compound of the general formula: ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, or a salt thereof with a compound of the general formula:Me.sub.2 S (II)wherein Me is hydrogen, an alkali metal atom or an ammonium radical under an acid condition.The compound (I) or a salt thereof is produced in high purity and high yield.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: September 30, 1986
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Kazuaki Kihara, Makoto Kuroda
  • Patent number: 4551472
    Abstract: Unsymmetrical N-substituted bis-carbamoyl sulfide compounds exhibit exceptional broad spectrum pesticidal activity coupled with extremely low mammalian toxicity and phytotoxicity.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: November 5, 1985
    Assignee: Union Carbide Corporation
    Inventor: Themistocles D. J. D'Silva
  • Patent number: 4530716
    Abstract: The oxime ethers of the formula I below are able to act as antidotes or safeners to protect cultivated plants from the phytotoxic effects of herbicides. Such cultivated plants are preferably sorghum, cereals, maize and rice, and herbicides are principally chloroacetanilides and thiocarbamates. The oxime ethers have the formula I ##STR1## wherein n is 1 or 2, each of R.sub.1 and R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl each of R.sub.3 and R.sub.4 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkylthio, C.sub.1 -C.sub.4 alkylsulfinyl, C.sub.1 -C.sub.4 alkylsulfonyl, C.sub.1 -C.sub.4 haloalkylsulfinyl, C.sub.1 -C.sub.4 haloalkylsulfonyl or nitro; each of R.sub.5 and R.sub.6 independently of the other is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.2 -C.sub.8 alkoxyalkyl, C.sub.3 -C.sub.4 alkenyl, C.sub.3 -C.sub.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: July 23, 1985
    Assignee: Ciba-Geigy Corporation
    Inventors: Henry Martin, Urs Fricker
  • Patent number: 4486447
    Abstract: Bis-sulfenylated bis-carbamate compounds exhibit activity against insect and mite pests.
    Type: Grant
    Filed: June 24, 1983
    Date of Patent: December 4, 1984
    Assignee: Union Carbide Corporation
    Inventor: Themistocles D. J. D'Silva
  • Patent number: 4400389
    Abstract: Bis-sulfenylated bis-carbamate compounds exhibit activity against insect and mite pests.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: August 23, 1983
    Assignee: Union Carbide Corporation
    Inventor: Themistocles D. J. D'Silva
  • Patent number: 4386214
    Abstract: Cyclic perfluoroaliphaticdisulfonic acid anhydrides, sulfonamide derivatives thereof, a process for making the same, curable compositions containing cyclic perfluoroaliphaticdisulfonic acid anhydrides or sulfonamide derivatives thereof and cationically-sensitive monomers, and a process for using cyclic perfluoroaliphaticdisulfonic acid anhydrides or sulfonamide derivatives thereof as catalysts for the cure of cationically-sensitive monomers.
    Type: Grant
    Filed: December 1, 1981
    Date of Patent: May 31, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Fred E. Behr
  • Patent number: 4329478
    Abstract: Cyclic perfluoroaliphaticdisulfonic acid anhydrides, sulfonamide derivatives thereof, a process for making the same, curable compositions containing cyclic perfluoroaliphaticdisulfonic acid anhydrides or sulfonamide derivatives thereof and cationically-sensitive monomers, and a process for using cyclic perfluoroaliphaticdisulfonic acid anhydrides or sulfonamide derivatives thereof as catalysts for the cure of cationically-sensitive monomers.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: May 11, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Fred E. Behr
  • Patent number: 4329293
    Abstract: An improved process is disclosed for sulfenylating carbamates in the presence of a solvent and acid acceptor, in which the reaction between a carbamate and a sulfenyl halide is conducted in the presence of a catalytic amount of a complex of a lower alkylamine and sulfur dioxide. Several methods for preparing and utilizing the complex in the reaction are disclosed and exemplified.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: May 11, 1982
    Assignee: FMC Corporation
    Inventors: John W. Ager, Maurice J. C. Harding, Charles E. Hatch, III
  • Patent number: 4327110
    Abstract: Symmetrical N-substituted bis-carbamoyloximino disulfide compounds exhibit outstanding nematocidal, miticidal and insecticidal activity, coupled with substantially reduced mammalian toxicity and phytotoxicity as compared to known pesticidal compounds having a comparable spectrum of activity against insect, arachnid and nematode pests.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: April 27, 1982
    Assignee: Union Carbide Corporation
    Inventor: Themistocles D. J. D'Silva
  • Patent number: 4267351
    Abstract: Cyclic sulfonate-sulfate anhydrides are produced by the reaction of an .alpha.- or .beta.-type sulfolene compound with SO.sub.3. Reaction of the cyclic sulfonate-sulfate anhydrides with alcohols produces alkyl esters of hydroxysulfolane sulfonic acids. The cyclic sulfonate-sulfate anhydrides or the alkyl esters of hydroxysulfolane sulfonic acids can be hydrolyzed to hydroxysulfolane sulfonic acids or their respective salts. The latter can be acylated to alkylcarbonyloxysulfolane sulfonic acids.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: May 12, 1981
    Assignee: Phillips Petroleum Company
    Inventors: Van C. Vives, John E. Mahan
  • Patent number: 4179514
    Abstract: Ketoalkanesulfenyl and ketoalkanethiosulfenyl carbamates exhibit exceptional pesticidal activity.
    Type: Grant
    Filed: January 6, 1978
    Date of Patent: December 18, 1979
    Assignee: Union Carbide Corporation
    Inventor: Themistocles D. J. D'Silva