Patents Represented by Attorney, Agent or Law Firm Dianne Burkhard
  • Patent number: 6910229
    Abstract: The present invention is an inflatable module which is breathable, i.e. permits the passage of moisture vapor, and which further incorporates a pressure relief means for reducing pressure in the inflated portion should the module be subjected to sudden or excessive stress. In a preferred embodiment of the invention, a pressure relief valve is incorporated as the pressure relief mechanism in the inflatable module.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: June 28, 2005
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Ingo Raithel, Birgit Schaldecker, Holger Zoudlik
  • Patent number: 6910235
    Abstract: A multi-layered, composite, inflatable and deflatable article of manufacture is provided. The article includes at least two layers of a flexible, waterproof, air impermeable, optionally water-vapor-permeable material, the two layers forming at least one inflatable compartment therebetween. The two layers have at least one additional layer of a porous insulating material, e.g., batting, disposed between them within the compartment. The layers are all adhesively bonded together about the periphery of the compartment and, optionally, at discrete locations within the periphery of the compartment. The porous insulating layer is otherwise unattached to either of the waterproof layers, and preferably is not otherwise attached to either. The compartment has at least one sealable opening therein through which air may be injected into or removed from the compartment, as desired, to thereby inflate or deflate the compartment to a desired volume and to thereby control its insulative value.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: June 28, 2005
    Assignee: Core Enterprise Holdings, Inc.
    Inventors: Craig D. Lack, Brian Farnworth
  • Patent number: 6796865
    Abstract: The present invention is an inflatable module which is breathable, i.e. permits the passage of moisture vapor, and which further incorporates a pressure relief means for reducing pressure in the inflated portion should the module be subjected to sudden or excessive stress. In a preferred embodiment of the invention, a pressure relief valve is incorporated as the pressure relief mechanism in the inflatable module. The present invention is further directed to an inflatable module having increased seal strength to make it capable of withstanding the rigors of use.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: September 28, 2004
    Inventors: Ingo Raithel, Birgit Schaldecker, Holger Zoudlik
  • Patent number: 6673455
    Abstract: A flexure endurant composition of an elastomer reinforced with a continuous phase of microporous, expanded polytetrafluoroethylene (ePTFE) having a ratio of elastomer to PTFE of approximately 1:1 to 50:1 on a volume basis. The composite is prepared by a coating process and the final articles are prepared by molding or vulcanizing. Such materials can be used to fabricate pump tubing, pump diaphragms, gaskets, bellows and other mechanical devices.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: January 6, 2004
    Assignee: Gore Enterprise Holdings Inc.
    Inventors: Michael Allen Zumbrum, Jason William Muller
  • Patent number: 6539951
    Abstract: A dental floss comprising a porous PTFE fiber having a density of less than about 0.7 g/cc. The inventive floss is abrasion resistant, grippable and has a soft feel to the hands and a rough feel in the mouth. The floss is made by an extrusion process with non-contact heating during subsequent expansion with amorphous locking.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: April 1, 2003
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Richard L. Baillie, James H. Chastain, John W. Dolan, William Hammond Wiley
  • Patent number: 6451396
    Abstract: A flexure endurant composition of an elastomer reinforced with a continuous phase of microporous, expanded polytetrafluoroethylene (ePTFE) having a ratio of elastomer to PTFE of approximately 1:1 to 50:1 on a volume basis. The composite is prepared by a coating process and the final articles are prepared by molding or vulcanizing. Such materials can be used to fabricate pump tubing, pump diaphragms, gaskets, bellows and other mechanical devices.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: September 17, 2002
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Michael Allen Zumbrum, Jason William Muller
  • Patent number: 6248693
    Abstract: Herbicidal compositions containing tetrazolinone compounds and antidotal compounds therefor to reduce injury to various crops, particularly corn, wheat, rice and soya, from the phytotoxic effects of tetrazolinone herbicides when used alone or in combination with additional pesticidally active ingredients. Methods for reducing phytotoxicity or injury to crop plants, particularly corn and soya crops, due to tetrazolinone herbicides are also described.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: June 19, 2001
    Assignee: Zeneca Limited
    Inventors: John M. Shribbs, Derek P. Dagarin
  • Patent number: 6218579
    Abstract: A process for preparing a compound of Formula (I); where Q completes an optionally substituted 5-or 6-member saturated carbocyclic ring and R is optionally substituted phenyl or optionally substituted C3-C6 cycloalkyl which comprises the rearrangement of a compound of Formula (II); where Q and R are as defined in relation to Formula (I) in a polar aprotic, dipolar aprotic or aromatic hydrocarbon solvent in the presence of a moderate base and an azole.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: April 17, 2001
    Assignee: Zeneca Limited
    Inventors: Robert Oliver Jones, Thomas William Bentley, Stephen Martin Brown
  • Patent number: 6207676
    Abstract: A compound of formula (I): wherein R1 represents a group of formula (A) where each of W, X, Y and Z and Z represents either a group CR or the nitrogen atom, provided that not more than two of W, X, Y and Z represent the nitrogen atom and where each R present is independently selected from hydrogen and halogen atoms and cyano, amino, hydrazino, acylamino, hydroxy, alkyl, hydroxyalkyl, alkoxy, haloalkyl, haloalkoxy, alkenyl, alkenyloxy, alkoxyalkenyl, alkynyl, carboxylic acyl, alkoxycarbonyl, aryl and heterocyclyl groups, said groups comprising up to 6 carbon atoms, and wherein R2 represents hydrogen or cyano or a group selected from alkyl, aryl, heteroaryl, aralkyl, heteroarylalkyl, alkenyl, aralkenyl, alkynyl, alkoxycarbonyl, alkanesulfonyl, arenesulfonyl, alkanyloxycarbonyl, aralkyloxycarbonyl, aryloxycarbonyl, heterocyclylalkyl, carbamyl or dithiocarboxyl groups, said groups comprising from 1 to 15 carbon atoms, said groups being optionally substituted with one or more substituents selecte
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: March 27, 2001
    Assignee: Zeneca Limited
    Inventors: Christopher John Urch, Roger Salmon, Terence Lewis, Christopher Richard Ayles Godfrey, Martin Stephen Clough
  • Patent number: 6093726
    Abstract: A compound of formula (I): ##STR1## wherein Ar is optionally substituted phenyl or optionally substituted 5-or 6-membered heterocyclic ring containing from 1 to 3 heteroatoms individually selected from nitrogen, oxygen and sulfur atoms, and at least one unsaturation (double bond) between adjacent atoms in the ring, said heterocyclic ring being optionally fused to a benzene ring; or an acid addition salt, quaternary ammonium salt or N-oxide derived therefrom, an insecticidal, acaricidal or nematicidal composition comprising a compound of formula (I) and a suitable carrier or diluent therefor, a method of combating and controlling insect, acarine or nematode pests at a locus which comprises treating the pests or the locus of the pests with an effective amount of a compound of formula (I) or a composition as hereinbefore described.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: July 25, 2000
    Assignee: Zeneca Limited
    Inventors: Christopher John Urch, Roger Salmon, Christopher Richard Ayles Godfrey
  • Patent number: 6075172
    Abstract: The present invention provides the novel chlorofluorohydrocarbon 1,1-difluoro-1,4-dichlorobutane, and a process for its preparation comprising reacting 1,1,1,4-tetrachlorobutane or 1,1,4-trichlorobut-1-ene with hydrogen fluoride in the liquid or vapor phase. The product has useful solvent properties and is also useful in synthetic chemistry for the introduction of fluorocarbon functionality.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: June 13, 2000
    Assignee: Zeneca Limited
    Inventors: Alfred Glyn Williams, Martin Charles Bowden, Stephen Martin Brown
  • Patent number: 6072080
    Abstract: A process for the purification of a compound of general formula I: ##STR1## wherein R.sup.1 is hydrogen or C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.2 -C.sub.6 alkynyl, any of which may optionally be substituted with one or more substituents selected from halogen and hydroxy; or COOR.sup.4, COR.sup.6, CONR.sup.4 R.sup.5 or CONHSO.sub.2 R.sup.4 ;R.sup.4 and R.sup.5 independently represent hydrogen or C.sub.1 -C.sub.4 alkyl optionally substituted with one or more halogen atoms;R.sup.6 is a halogen atom or a group R.sup.4 ;R.sup.2 is hydrogen or halo; andR.sup.3 is C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl or C.sub.2 -C.sub.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: June 6, 2000
    Assignee: Zeneca Limited
    Inventors: Louie Akos Nady, Seyed Mehdi Tavana, Thomas Gray, Stephen Martin Brown, Brian David Gott
  • Patent number: 6071856
    Abstract: This invention is directed to an herbicidal composition comprising,a) an herbicidally effective amount of acetochlor; andb) a non-phytotoxic antidotally effective amount of a compound according to formula (I), ##STR1## wherein each of R.sup.1 and R.sup.2 independently represents one or more substituents selected from hydrogen, (C.sub.1 -C.sub.6)alkyl, (C.sub.1 -C.sub.6)alkoxy, (C.sub.1 -C.sub.6)alkylamino, halo, halo(C.sub.1 -C.sub.6)alkyl, (C.sub.1 -C.sub.6)alkoxy-(C.sub.1 -C.sub.6)alkyl and nitro;wherein A is selected from ##STR2## wherein each of R.sup.3 and R.sup.4 is independently selected from hydrogen, (C.sub.1 -C.sub.6)alkyl, halo(C.sub.1 -C.sub.6)alkyl, cyano(C.sub.1 -C.sub.6)alkyl, (C.sub.1 -C.sub.6)alkoxy-(C.sub.1 -C.sub.6)alkyl, (C.sub.2 -C.sub.6)alkenyl, (C.sub.2 -C.sub.6)alkynyl, phenyl, nitrophenyl, benzyl, halobenzyl, pyridinyl(C.sub.1 -C.sub.6)alkyl and (C.sub.1 -C.sub.6)alkylammonium; and n is 0 or 1.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: June 6, 2000
    Assignee: Zeneca Limited
    Inventors: Don R. Baker, Richard L. Franz, Khosro Khodayari
  • Patent number: 6066646
    Abstract: A compound of formula (I):P--R.sup.2 --Q (I)where each of P and Q is, independently, a group of formula (B): ##STR1## wherein J is a bidentate group of formula --CH.sub.2 --X--CH.sub.2 -- (wherein X is methylene, sulfur or oxygen), X'C.dbd.CY or X'WC--CYZ (wherein X', W, Y and Z are independently hydrogen, hydroxy, acyloxy, alkoxy, alkylsilyloxy or halogen); R.sup.1 is an optionally substituted phenyl or 5-or 6-membered heterocyclic ring system containing from 1 to 3 heteroatoms individually selected from nitrogen, oxygen and sulfur atoms, and at least one unsaturation (double bond) between adjacent atoms in the ring, said heterocyclic ring being optionally fused to a benzene ring, wherein the substutuents, if present, are selected from halogen atoms, cyano, alkyl, alkenyl, alkynyl, alkoxy, haloalkyl, haloalkenyl, alkylthio and alkyl amino groups, any of which groups contain up to six carbon atoms; R.sup.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: May 23, 2000
    Assignee: Zeneca Limited
    Inventors: Nigel Douglas Bishop, Christopher John Urch, Terence Lewis, Raymond Leo Sunley, Roger Salmon, Christopher Richard Ayles Godfrey
  • Patent number: 6028219
    Abstract: A process for the preparation of a compound of general formula I: ##STR1## wherein: R.sup.1 is hydrogen or C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.2 -C.sub.6 alkynyl, any of which may optionally be substituted with one or more substituents selected from halogen and OH; or COOR.sup.4, COR.sup.6, CONR.sup.4 R.sup.5 or CONHSO.sub.2 R.sup.4 ;R.sup.4 and R.sup.5 are each independently hydrogen or C.sub.1 -C.sub.4 alkyl optionally substituted with one or more halogen atoms;R.sup.6 is a halogen atom or a group R.sup.4 ;R.sup.2 is hydrogen or halo;R.sup.3 is C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl or C.sub.2 -C.sub.4 alkynyl, any of which may optionally be substituted with one or more halogen atoms; or halo;the process comprising reacting a compound of general formula II: ##STR2## wherein R.sup.1, R.sup.2 and R.sup.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: February 22, 2000
    Assignee: Zeneca Limited
    Inventors: John Heathcote Atherton, Stephen Martin Brown, James Peter Muxworthy, Martin Lennon
  • Patent number: 6025497
    Abstract: 5-Chloro-2-(4,4-difluorobutenylthio)thiazole is prepared from 2-mercaptothiazole by a multistep process involving S-alkylation, chlorination and dehydrochlorination and is converted by oxidation to the corresponding sulfone which is useful as an agricultural nematicide.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: February 15, 2000
    Assignee: Zeneca Limited
    Inventors: Martin Charles Bowden, Stephen Martin Brown
  • Patent number: 5968947
    Abstract: A compound of formula (I): ##STR1## wherein A represents a bidentate group of formula --CH.sub.2 --X--CH.sub.2 -- (wherein X is methylene, sulfur or oxygen), X'C.dbd.CY or X'WC--CYZ (wherein X', W, Y and Z are independently hydrogen, hydroxy, acyloxy, alkoxy, alkylsilyloxy, cyano or halogen, or X' and W or Y and Z together with the carbon to which they are attached form a carbonyl group), provided that A is not CH.sub.2 --CH.sub.2 ; Ar is an optionally substituted phenyl or 5-or 6-membered heterocyclic ring system containing from 1 to 3 heteroatoms individually selected from nitrogen, oxygen and sulfur atoms, and at least one unsaturation (double bond) between adjacent atoms in the ring, said heterocyclic ring being optionally fused to a benzene ring; aryl, heteroaryl, aralkyl, heteroarylalkyl, alkenyl, aralkenyl, alkynyl, alkoxycarbonyl, alkanesulfonyl, arenesulfonyl, alkanyloxycarbonyl, aralkyloxycarbonyl, aryloxycarbonyl, heterocyclylalkyl, carbamyl, dithiocarboxyl moieties of R, R.sup.3 and R.sup.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: October 19, 1999
    Assignee: ZENECA Limited
    Inventors: Christopher John Urch, Roger Salmon, Christopher Richard Ayles Godfrey, Matthew Brian Hotson
  • Patent number: D415033
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: October 12, 1999
    Assignee: Zeneca Limited
    Inventors: Christopher James Forecast, David Kevin Thomson, Stephen Christopher Moore
  • Patent number: D415034
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: October 12, 1999
    Assignee: Zeneca Limited
    Inventors: Christopher James Forecast, David Kevin Thompson, Stephen Christopher Moore
  • Patent number: D417397
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: December 7, 1999
    Inventors: Christopher James Forecast, David Kevin Thomson, Stephen Christopher Moore