Patents Examined by Joseph L. Schofer
  • Patent number: 5824726
    Abstract: The present invention provides a multi-phase polymerization process for making a water insoluble polymer. The process includes (1) providing a mixture comprising carbon dioxide and an aqueous phase, and containing a monomer and a polymerization initiator, and (2) polymerizing the monomer in the reaction mixture. The monomer may be a hydrocarbon or a fluorinated monomer. The polymerization initiator may be soluble in the aqueous phase, soluble in carbon dioxide, or insoluble in both the aqueous phase and carbon dioxide, such that the initiator forms a separate phase. The present invention also provides multi-phase polymerization reaction mixtures useful in the process of making water insoluble polymers.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: October 20, 1998
    Assignee: University of North Carolina--Chapel Hill
    Inventors: Joseph M. DeSimone, Timothy Romack
  • Patent number: 5821312
    Abstract: The present invention includes polymerizable monomers comprising an acid-functionalized glycoside moiety. The monomer can have a polymerizable functional group, such as an olefinic bond, to which the acid-functionalized glycoside moiety is attached by a spacer group, for example, an alkylene group, or an alkylene group wherein one or more carbon atoms are substituted by heteroatoms, such as oxygen, nitrogen or sulfur atoms. The present invention also includes polymers comprising pendant acid-functionalized glycoside moieties. The present invention also provides a method for treating a microbial infection in a mammal by administering to the mammal a therapeutically effective amount of a polymer comprising one or more acid-functionalized glycoside moieties.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: October 13, 1998
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Venkata R. Garigapati
  • Patent number: 5821311
    Abstract: The claimed invention is directed to stabilizers, polymers, and emulsifiers useful in preparing molecularly imprinted materials having recognition capabilities corresponding to the imprint molecule.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: October 13, 1998
    Inventors: Klaus Mosbach, Andrew G. Mayes
  • Patent number: 5817727
    Abstract: The present invention pertains to a film for detecting chemical substances comprising a homopolymer or a copolymer having recurring units represented by the following formula (I): ##STR1## wherein X is --H, --F, --Cl, --Br, --CH.sub.3, --CF.sub.3, --CN or --CH.sub.2 CH.sub.3 ; and R.sup.1 is --R.sup.2 or --Z--R.sup.2 ;wherein Z is --O--, --S--, --NH--, --NR.sup.2' --, --(C.dbd.Y)--, --(C.dbd.Y)--Y--, --Y--(C.dbd.Y)--, --(SO.sub.2)--, --Y'--(SO.sub.2)--, --(SO.sub.2)--Y'--, --Y'--(SO.sub.2)--Y'--, --NH--(C.dbd.O)--, --(C.dbd.O)--NH--, --(C.dbd.O)--NR.sup.2' --, --Y'--(C.dbd.Y)--Y'-- or --O--(C.dbd.O)--(CH.sub.2).sub.n --(C.dbd.O)--O--;wherein Y is independently O or S, and Y' is independently O or NH, and n is an integer of 0 to 20;and wherein R.sup.2 and R.sup.2' represent independently a hydrogen atom, a linear alkyl group, a branched alkyl group, a cycloalkyl group, an unsaturated hydrocarbon group, an aryl group, a saturated or unsaturated hetero ring or derivatives thereof, provided that R.sup.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 6, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Werner Prass, Thomas Stehlin, Yuan Liu, Shizuo Ogura, Tetsu Yamamoto, Akihiko Tokida, Kenji Motosugi
  • Patent number: 5817726
    Abstract: A substantially non-crosslinked water-absorptive soft ocular lens material obtained by polymerizing polymerizable components comprising a methoxysilane compound (A) of the formula (I):X--Z--Si(OCH.sub.3).sub.n (R.sup.1).sub.3-n (I)wherein X is a (meth)acryloyloxy group, a vinyl group, a group of the formula ##STR1## or an allyl group, Z is a direct bond or a C.sub.1-3 alkylene group, R.sup.1 is a C.sub.1-6 alkyl group, and n is an integer of from 1 to 3, and a hydrophilic monomer (B) which has an unsaturated double bond copolymerizable with the methoxysilane compound (A) and which undergoes no crosslinking reaction, in an amount of at least 45 mol %.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: October 6, 1998
    Assignee: Menicon Co., Ltd.
    Inventors: Kazuhiko Nakada, Noriko Yoshimatsu, Shoji Ichinohe, Toshio Yamazaki
  • Patent number: 5814678
    Abstract: The present invention provides for the regulation of the rate of a chemical reaction within the aqueous micelles within a microemulsion of water in supercritical carbon dioxide. Increase in pressure increases the concentration of an ionized reaction component (reactant, catalyst or reaction initiator) within the reverse micelles, thus increasing the rate of the reaction or allowing the reaction to initiate. Similarly, the reaction rate can be slowed by decreasing the pressure, thus decreasing the amount of water and ionized components in the reverse micelles. Decrease in the pressure below a critical level results in the reaction stopping when the concentration of a ionized reaction component falls to a sufficiently low level.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: September 29, 1998
    Assignee: University Technology Corp.
    Inventor: Theodore W. Randolph
  • Patent number: 5814713
    Abstract: (i) A method for emulsion polymerization of tetrafluoroethylene, which comprises emulsion-polymerizing tetrafluoroethylene in the presence of a polymerization initiator, a paraffin wax containing not larger than 100 ppm of a reducing substance and an emulsifier, and (ii) a method for preventing irregular polymerization of tetrafluoroethylene, which comprises using the above method for emulsion polymerization give a constant polymerization time, and polytetrafluoroethylene having values of physical properties which meet the desired standard requirements.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: September 29, 1998
    Assignee: Daikin Industries, Ltd.
    Inventors: Takuo Kawamura, Shigeru Ichiba, Tomizo Sota
  • Patent number: 5814338
    Abstract: The present invention deals with a pharmaceutical product in unit dosage form and a unit dosage drug delivery system which comprises a multiple layer capsule or housing having two or more layers, the layers being of materials, wherein the outer layer possesses a hydrophilic character and the inner layer possesses a hydrophobic character, and a capsule filling wherein one or more drug substances are admixed, dissolved, suspended or agglomerated in a hydrophobic support.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: September 29, 1998
    Assignee: Therapicon S.R.L.
    Inventor: Paolo Alberto Veronesi
  • Patent number: 5811500
    Abstract: This process is characterized in that at least one of the said monomers is polymerized or copolymerized in bulk, solution, emulsion or suspension, at a temperature which may be as low as 0.degree. C., in the presence of an initiator system comprising at least one non-peroxy radical-generator compound and at least one catalyst consisting of a metal complex represented by formula Ma.sub.a (L).sub.n in which M represents Rh, Co or Ir; A represents, a halogen or a pseudohalogen; the groups L, which may be identical or different, each represent a ligand which may be a chiral ligand, which is chosen from cyclooctadiene, PRR'R", P(OR) (OR') (OR"), NRR'R", ORR', SRR', SeRR', AsRR'R", SbRR'R", each radical R, R' and R" independently representing an optionally substituted C.sub.1 -C.sub.14 alkyl group or an optionally substituted aromatic group, it being possible for at least two of these ligands to be joined together by one or more divalent radicals; a is an integer such that 1.ltoreq.a.ltoreq.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: September 22, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Philippe Dubois, Georges Moineau, Philippe Teyssie, Robert Jerome, Thierry Senninger
  • Patent number: 5811502
    Abstract: An ocular lens material made of a polymer obtained by polymerizing polymerizable components comprising a monomer of the formula (I): ##STR1## wherein R.sup.1 is a group of the formula: ##STR2## wherein R.sup.3 is a hydrogen atom or a methyl group, or a group of the formula: ##STR3## R.sup.2 is a C.sub.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: September 22, 1998
    Assignee: Menicon Co., Ltd.
    Inventor: Haruyuki Hiratani
  • Patent number: 5807563
    Abstract: Disclosed are methods for draping a surgical incision site prior to surgery. Specifically, the methods of this invention involve the in situ formation of a cyanoacrylate polymeric drape over the skin surface at the surgical incision site. An incision is then made through this surface and the surgery is then conducted through the incision.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: September 15, 1998
    Assignee: MedLogic Global Corporation
    Inventors: Ian N. Askill, Richard J. Greff, Michael M. Byram, Richard T. VanRyne
  • Patent number: 5807937
    Abstract: Improved processes have been developed for atom (or group) transfer radical polymerization (ATRP). In one improvement, the ATRP process involves polymerizing in the presence of a (partially) free radical-deactivating amount of the corresponding reduced or oxidized transition metal compound. In a further improvement, the ATRP process involves polymerizing in a homogeneous system or in the presence of a solubilized initiating/catalytic system. The present invention also concerns end-functional, site-specific functional and telechelic homopolymers and copolymers; block, random, graft, alternating and tapered (or "gradient") copolymers which may have certain properties or a certain novel structure; star, comb and "hyperbranched" polymers and copolymers; multi-functional hyperbranched, end-functional polymers; cross-linked polymers and gels; water-soluble polymers and hydrogels (e.g.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: September 15, 1998
    Assignee: Carnegie Mellon University
    Inventors: Krzysztof Matyjaszewski, Simion Coca, Scott G. Gaynor, Dorota Greszta, Timothy E. Patten, Jin-Shan Wang, Jianhui Xia
  • Patent number: 5807612
    Abstract: A composition and method is described for providing conformal protective or decorative polymer coatings on metals such as aluminum, copper, iron, steel, zinc, and their by dip autopolymerization. In accordance with the present invention, an acidic solution of organic monomer undergoes autopolymerization upon contact with a metal substrate, thereby forming a polymeric coating on the substrate. The method comprises providing the acidic monomer solution, dipping the metal substrate to be coated for a prescribed period of time depending on the thickness of the coating desired, and then removing the substrate from the solution. Importantly, the polymerization requires no application of external driving force, such as thermal or electrical energy. The coatings thus formed are up to 50 microns thick, and conform to the shape of the substrate. These coatings further have uniform thickness, and excellent thermal stability and protective properties.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: September 15, 1998
    Assignee: The University of Connecticut
    Inventors: James P. Bell, Xu Zhang, Rajat Agarwal
  • Patent number: 5807945
    Abstract: This invention relates to (co)polymers which contain at least one repeat chain unit of the general formula (1) or (2) and optionally repeat units of the general formula (3), ##STR1## in which L.sup.1 and L.sup.2 denote a photoluminescent residue,wherein the proportion of structural units of the formulae (1) and/or (2) is in each case 0.5 to 100 mol. % and of (3) is 0 to 99.5 mol. % and the molar percentages add up to 100,to the use thereof for the production of electroluminescent arrangements and to the electroluminescent arrangements.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: September 15, 1998
    Assignee: Bayer AG
    Inventors: Yun Chen, Rolf Wehrmann, Andreas Elschner, Ralf Dujardin
  • Patent number: 5804662
    Abstract: Agglomerated, finely divided, crosslinked vinylimidazole copolymers obtainable by free-radically initiated polymerization of N-vinylimidazoles of the formula ##STR1## where R, R.sup.1 and R.sup.2 are identical or different and each is H, C.sub.1 -C.sub.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: September 8, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Karl-Heinrich Schneider
  • Patent number: 5804650
    Abstract: To provide an aqueous dispersion of a vinylidene fluoride (VdF) copolymer which can be prepared by emulsion-polymerizing VdF monomer with a reactive emulsifying agent and is excellent in stability against sedimentation because an average particle size of the copolymer is as small as not more than 200 nm and a solid content is as high as from 30 to 60% by weight; an aqueous dispersion of a VdF seed polymer which can be prepared by seed-polymerizing an ethylenically unsaturated monomer in the presence of particles obtained by emulsion-polymerizing VdF monomer with a reactive emulsifying agent and is excellent in stability against sedimentation because an average particle size of the seed polymer is as small as not more than 250 nm and a solid content is as high as from 30 to 60% by weight; and processes for preparation thereof.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: September 8, 1998
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Ryuzi Iwakiri, Yasushi Yonei, Katsuhiko Imoto, Yoshiki Shimizu, Takayuki Araki, Masahiro Kondo
  • Patent number: 5798426
    Abstract: An acrylic polymer of polymerized monomers of about 55-80% by weight of an alkyl methacrylate having 1-12 carbon atoms in the alkyl group, and alkyl acrylate having 1-12 carbon atoms in the alkyl group, substituted or unsubstituted aryl methacrylate or acrylate, substituted or unsubstituted alicyclic methacrylate or acrylate, substituted or unsubstituted cyclic methacrylate or acrylate, a polymerizable vinyl aromatic monomer, vinyl pyrrolidone or any mixtures of the above monomers, and contains about 5-40% by weight of acetoacetoxy ethyl methacrylate and about 5-15% by weight of ethylenically unsaturated acid and the acrylic polymer has a weight average molecular weight of about 10,000-3,000,000 and a glass transition temperature of about -20.degree. to 50.degree. C.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: August 25, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Waifong Liew Anton, Harry Joseph Spinelli, Anjali Abhimanyu Patil
  • Patent number: 5798425
    Abstract: Disclosed is a co-polymer based on oxyalkyleneglycol alkenyl ethers and unsaturated dicarboxylic acid derivatives, as well as vinylic polyalkyleneglycol, polysiloxane or ester compounds. These co-polymers can be used as additives for hydraulic binding agents, especially cement. The co-polymers of the invention have an excellent and long-lasting liquefying action without introducing large amounts of air pores into the binding agent mixtures, thereby preventing the loss of strength and stability of the hardened building materials.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: August 25, 1998
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Gerhard Albrecht, Josef Weichmann, Johann Penkner, Alfred Kern
  • Patent number: 5795582
    Abstract: A new method of adjuvanting a variety of materials has been developed. Starburst dendrimers, primarily poly(amidoamine) starburst dendrimers, can be used as an adjuvant for Influenza antigen and similar materials. Mid-Generation dendrimers are preferred and yield high antibody titer levels with reduced antigen dosage.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: August 18, 1998
    Assignee: Novavax, Inc.
    Inventor: D. Craig Wright
  • Patent number: 5795657
    Abstract: A complex comprises organoborane and polyamine. The polyamine is the reaction product of a diprimary amine-terminated material and a material having at least two groups reactive with primary amine. The complexes are useful in systems for initiating the polymerization of acrylic monomer, which systems further include a material reactive with amine. Polymerizable acrylic monomer compositions useful as adhesives can be prepared.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 18, 1998
    Assignee: Minnesota Mining and Manufaturing Company
    Inventors: Alphonsus V. Pocius, Tadesse G. Nigatu