Patents Examined by Tanya Zalukaeva
  • Patent number: 7708724
    Abstract: A reduced pressure treatment appliance is provided for treating a wound on the body of a patient. In some embodiments, the appliance comprises a cover, which is further comprised of a top cup member and an interface member. The interface member comprises flow control means, which permit exudate from the wound to flow through the flow control means into the volume under the cover, but not in the opposite direction. Also, in some embodiments, the top cup member is further comprised of a lid member, a cup body member, and lid attachment means to removably attach the lid member to the cup body member. In some of these embodiments, it is possible to access the wound for monitoring, treatment and other purposes without removing the cover from the body. In other embodiments, the wound treatment appliance also includes a vacuum system to supply reduced pressure to the site of the wound in the volume under the cover.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: May 4, 2010
    Assignee: Blue Sky Medical Group Incorporated
    Inventor: Richard Scott Weston
  • Patent number: 6673883
    Abstract: A cross-linkable polymer formed from monomer including a) a hydroxyl-group containing monomer of the formula I in which R26 is hydrogen or a C1-4-alkyl group; A1 is —O— or —NR27— where R27 is hydrogen or a C1-4-alkyl group or a group B9R—(OH)n; B9 is a bond, a straight or branched alkylene, oxa alkylene or oligooxa alkylene group; R13 is a n+1 functional C1-24 alkylene group which may be substituted, and n is an integer of one or more; b) a reactive monomer of the formula (II) in which R19 is hydrogen or a C1-4-alkyl group; A2 is —O— or —NR21— where R21 is hydrogen, or a C1-4-alkyl group R12 is a C1-24 straight or branched alkylene, oxaalkylene or oligo oxaalkylene group in which each alkylene group has 1 to 6 carbon atoms; A3 is a bond or —O—; and each R16 is independently selected from C1-6-alkyl groups.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: January 6, 2004
    Assignee: Biocompatibles UK Limited
    Inventor: Lee Rowan
  • Patent number: 6630599
    Abstract: A process for preparing blocked derivatives of m- or p- isopropenyl-&agr;,&agr;-dimethylbenzyl isocyanates, comprising reacting a meta- or a para-isopropenyl-&agr;,&agr;-dimethylbenzyl carbamate ester with hydroxy functional blocking group, such as hydroxyethylene-ethyleneurea, hydroxyethylenepropylene urea, dialkylaminoethanol and dialkylamino propanol
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: October 7, 2003
    Assignee: Cytec Technology Corp.
    Inventors: Balwant Singh, Laurence Wu-Kwang Chang
  • Patent number: 6492543
    Abstract: Polyacetylene compounds and process for the preparation thereof from a chiral dihydroxy amide are described. The compounds preferably have diacyl groups attached to the amide. The compounds are useful for making films which are electrically conductive, near infrared absorbing, polarizing, and have the characteristic optical and other properties of polyacetylenes.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: December 10, 2002
    Assignee: Board of Trustees of Michigan State University
    Inventors: Rawle I. Hollingsworth, Guijun Wang
  • Patent number: 6492488
    Abstract: A method for forming polyacrylic acid granules and granules prepared therefrom, wherein the granules are flowable, have comparable swelling characteristics and provide comparable tablet properties to powdered polyacrylic acid, have increased bulk density and contain minimal amounts of very small particles that can cause dusting and static adherence. The granules are used to prepare controlled-release tablets, especially for pharmaceutical purposes. The tablets prepared from granules obtained by the method of present invention have superior controlled release properties.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: December 10, 2002
    Assignee: PMD Holdings Corp.
    Inventors: Daniel James Adams, David William Weaver
  • Patent number: 6492478
    Abstract: The invention relates to novel crosslinkable prepolymers comprising structural units of the formula wherein the variables are as defined in the claims, to crosslinked polymers, to either homo-polymers or copolymers prepared from those novel prepolymers, to mouldings produced from the said homo- or co-polymers, and especially to contact lenses produced from those homo- or co-polymers.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: December 10, 2002
    Assignee: Novartis AG
    Inventor: Bettina Steinmann
  • Patent number: 6469133
    Abstract: The present invention provides a process for the direct synthesis of high melting polymers made from dimeric cyclic esters. In particular, the present invention provides a process for synthesis of polylactic acid (PLA) from racemic materials such as racemic lactide and polymandelide from mandelide. The process further provides racemic metal organic ligand catalysts such as racemic salbinap that catalyzes the polymerization of racemic dimeric cyclic ester monomers to a polylactide stereocomplex. Polymandelide and mixed dimeric cyclic esters are also prepared in the presence of low amounts of water.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: October 22, 2002
    Assignee: Board of Trustees of Michigan State University
    Inventors: Gregory L. Baker, Milton R. Smith, III
  • Patent number: 6465595
    Abstract: A potentially hydrophilic resin comprises at least monomer units readily saponifiable under alkaline conditions to form carboxyl groups, carboxyl-containing monomer units, and hydroxyl-containing monomer units. A potentially hydrophilic resin composition comprises, in a liquid medium, the potentially hydrophilic and an adhesive component or film-forming component. A recycling method is provided for an article with a coating applied on a surface thereof. According to the recycling method, the coating on the surface of the article is formed with the potentially hydrophilic resin composition, and subsequent to use of the article, the article is treated with alkaline water to saponify methyl acrylate in the coating such that the coating is caused to swell, and the coating so swollen is removed from the article.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: October 15, 2002
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Minoru Takizawa, Hitoshi Naganuma, Michiei Nakamura, Naomi Oguma
  • Patent number: 6458896
    Abstract: Certain mixtures of two superabsorbent powders having very different capillary suctions exhibit a resulting capillary suction which approaches the higher value. The resulting mixtures simultaneously exhibit a high capillary suction and a high intrinsic absorption capacity.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: October 1, 2002
    Assignee: Elf Atochem, S.A.
    Inventors: Christian Collette, Manuel Hidalgo, Andre Kowalik, Fabienne Lebendenko, Emmanuel Puchois
  • Patent number: 6455645
    Abstract: A novel process for the production of oligomeric and polymeric telechelic compositions, to the telechelic compositions produced in this manner and to use thereof in the plastics, fibres or lacquer sectors.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: September 24, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Melchiors, Dieter Margotte, Hartwig Höcker, Helmut Keul, Andreas Neumann
  • Patent number: 6451947
    Abstract: A high energy density capacitor comprising an organic polymeric dielectric material having a dielectric constant of at least about 7; wherein the organic polymeric dielectric material comprises polymerized alkyl (alpha-substituted)acrylate monomers having at least one dipole group; wherein when the monomers are polymerized, the dipole group is attached to the main polymeric chain through a heteroatom-containing linking group.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: September 17, 2002
    Assignee: Medtronic, Inc.
    Inventors: Michael E. Benz, Edward DiDomenico, Randall V. Sparer
  • Patent number: 6448354
    Abstract: A methyl methacrylate syrup is produced by the steps of (1) preparing a starting material comprising methyl methacrylate or a monomer mixture mainly comprising methyl methacrylate, and dividing the starting material into 20 to 70% by weight of an initial charge and 30 to 80% by weight of an after-charge; (2) heating the initial charge in a reactor; (3) adding a whole protion of a chain transfer agent at the time when the initial charge reaches a reaction temperature; (4) adding the after-charge over 0.1 to 10 hours together with a polymerization initiator having a half-life of 10 to 300 seconds at the reaction temperature; (5) continuing the heating after the addition of the after-charge and the polymerization initiator is complete; and (6) adding a hindered phenol polymerization inhibitor at the time the heating is finished. The methyl methacrylate syrup thus produced is excellent in storage stability.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: September 10, 2002
    Assignee: Mitsubishi Gas Chemical
    Inventors: Shin-ichi Hieda, Tadashi Kawabata, Shojiro Kuwabara, Masahiro Kurokawa
  • Patent number: 6444771
    Abstract: The present invention provides: an acrylic acid-maleic acid copolymer (or its salt) which is excellent in performances, such as Mg2+ scavengeability, clay dispersibility in the presence of Mg2+, inhibitability upon Mg(OH)2 scale, and inhibitability upon CaCO3 scale; and a production process for such a copolymer (or its salt). The present invention further provides a production process for an aqueous maleic salt solution with a low impurity content which has the advantage of easily giving the above copolymer (or its salt). The present invention still further provides uses of the above copolymer (or its salt) having the above excellent properties.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: September 3, 2002
    Assignee: Nippon Shokubai Co. Ltd.
    Inventors: Shigeru Yamaguchi, Yoshihiro Maeda, Tamao Ishida
  • Patent number: 6437010
    Abstract: A method for desalination of water or of aqueous solutions derived from industrial process that use two columns: the first treatment column containing a mixed bed of ion exchange resins, in which the cation exchange resins are regenerated, and a second column, into which the anion exchange resins are transferred and regenerated, to be then reintroduced from the bottom into the above mentioned first column, where they rise through the cation exchange resins.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: August 20, 2002
    Assignee: Bracco Imaging S.p.A.
    Inventors: Carlo Felice Viscardi, Marina Ausonio, Mauro Parenti
  • Patent number: 6433052
    Abstract: This invention relates to novel rosin-fatty acid vinylic polymer compositions and the process for preparing them. In particular, the invention relates to novel rosin-fatty acid vinylic polymer compositions which exhibit properties that make them useful as support resins for ink and overprint formulations.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: August 13, 2002
    Assignee: Westvaco Corporation
    Inventors: Rajnikant Shah, Stanley C. Adams
  • Patent number: 6423799
    Abstract: Disclosed is an extremely rapidly photo-addressable storage media from inherently slow photo-addressable polymers by irradiating a substrate over a large area with a light source suitable for conventional inscription so that an optical anisotropy, i.e. a double refraction with a preferential direction in the plane of the substrate occurs. If the substrates so prepared are briefly intensively irradiated, the pattern is inscribed extremely rapidly and permanently. The invention also relates to novel side-chain polymers in which high optical anisotropy can be generated by irradiation. This optical anisotropy is very heat stable.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: July 23, 2002
    Assignee: Bayer AG
    Inventors: Horst Berneth, Uwe Claussen, Serguei Kostromine, Ralf Neigl, Hans-Joachim Vedder
  • Patent number: 6423804
    Abstract: The present invention is directed to ion-sensitive, hard water dispersible polymers. The present invention is also directed to a method of making ion-sensitive, hard water dispersible polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising ion-sensitive, hard water dispersible binder compositions and their applicability in water dispersible personal care products.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: July 23, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Yihua Chang, Pavneet S. Mumick, Frederick J. Lang
  • Patent number: 6420474
    Abstract: Aqueous coating composition are described wherein the binder includes an anionically stabilized addition polymerized dispersion of a polymer. The monomers used to prepare the dispersion are acrylic cid and methyacrylic acid, as carboxylic monomers and styrene, alpha-methyl styrene or vinyl toluene as a hydrophobic high Tg aromatic monomer. Acrylate ester is used as a low Tg monomer. The relative weight proportions of the monomers are required to satisfy the designated formula. Blends of high and low Tg dispersions are also provided. Pains formulated with the binders of present invention exhibit excellent balance of stain resistance, tint strength and viscosity stability.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: July 16, 2002
    Assignee: Orica Australia Pty Ltd
    Inventors: Michelle Carey, Karen Elsbury, Patrick Houlihan, Bruce Leary, Lisa Madigan, Thamala Weerasinghe, Chantel Marise, Susan George
  • Patent number: 6410670
    Abstract: The present invention relates to novel monomers and their polymers, which are useful in a photolithography employing a light source in the far ultraviolet region of the light spectrum, copolymers thereof, and photoresist compositions prepared therefrom. Photoresist monomers of the present invention are represented by the following Chemical Formula 1: wherein, R is substituted or non-substituted linear or branched (C1-C10)alkyl, substituted or non-substituted (C1-C10)ether, substituted or non-substituted (C1-C10)ester, or substituted or non-substituted (C1-C10)ketone; X and Y are independently CH2, CH2CH2, oxygen or sulfur; and i is 0 or an integer of 1 to 2.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: June 25, 2002
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Geun Su Lee, Cha Won Koh, Jae Chang Jung, Min Ho Jung, Ki Ho Baik
  • Patent number: 6410672
    Abstract: The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in accordance with the invention by combining, an ethylenic tertiary amine monomer, an alkylating agent having a boiling point temperature of at least about 100° C., and a cross-linking agent in the presence of a polymerizing agent for a time and at a temperature sufficient to form the polymer. The alkylating agent and the cross-linking agent may be the same compound, a cross-linking alkylating agent. The polymers may be produced in the presence of solvents and/or in the presence of diluting monomers which are incorporated into the polymers.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: June 25, 2002
    Assignee: Ionics, Incorporated
    Inventors: Russell J. MacDonald, James A. Lech