Patents Examined by P. Hampton Hightower
  • Patent number: 7201966
    Abstract: Multilayer coextruded thermoformable structures for packaging film applications. The multilayer structures having at least a first layer comprising polyethylene terephthalate, a second layer of a first adhesive comprising a blend of at least an acrylate-based resin and either a modified polyolefin or a modified acrylate-based resin; a third layer of a thermoplastic oxygen barrier. The thermoplastic oxygen barrier may comprise ethylene/vinyl alcohol copolymer (EVOH), polyvinylidene chloride, or polyamide, preferably, a polyamide blend containing between 1–29% amorphous polyamide. The present invention may further comprise at least 5–7 thermoplastic layers.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: April 10, 2007
    Assignee: Curwood, Inc.
    Inventor: Andrew John Lischefski
  • Patent number: 7175917
    Abstract: The present invention provides a biaxially oriented film of a polylactic acid resin that is suitable for films for bags and packaging films for various windows, particularly films for outlook window envelopes. The film is biodegradable and, as films for outlook window envelopes, is superior in the coating adaptability for an antistatic agent, a lubricant and an antiblocking agent or the like and in the high-speed cutting property. The present invention discloses a biaxially oriented film of a polylactic acid resin comprising not less than 50% by weight of a polylactic acid resin, which has a storage modulus E?at 80° C. within the range from 10 MPa to 3,000 MPa, as determined by the test method for temperature dependency of dynamic viscoelasticity, in accordance with JIS K7198 (method A); a heat shrinkage of not higher than 10%, upon heating at 80° C. for 10 seconds; and a tear strength in the width direction (TD direction) of the film of 10 to 200 mN, as determined in accordance with JIS K7128 (method B).
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: February 13, 2007
    Assignee: Asahi Kasei Life & Living Corporation
    Inventors: Masayuki Sukigara, Mitsuyoshi Itada, Hisao Koike, Michihiro Yatsuzuka, Yoshiaki Hamada
  • Patent number: 7169878
    Abstract: A diamine compound represented by the formula (1): wherein R1 is a trivalent organic group, each of X1 and X2 is a bivalent organic group, X3 is an alkyl or fluoroalkyl group having from 1 to 22 carbon atoms, or a cyclic substituent selected from aromatic rings, aliphatic rings, heterocyclic rings and their substituted groups, and n is an integer of from 2 to 5. And, a polyimide precursor and a polyimide synthesized by using the diamine compound; and a treating agent for liquid crystal alignment containing the polyimide precursor and/or the polyimide.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: January 30, 2007
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Kazuyoshi Hosaka, Hideyuki Nawata
  • Patent number: 7147906
    Abstract: In one aspect the present invention provides a storage medium for data, the storage medium comprising: a) a substrate, a physical portion of which comprises at least one polyimide, and b) at least one data layer on the substrate. The substrate comprising a polyimide exhibits low axial displacement and beneficial damping characteristics.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: December 12, 2006
    Assignee: General Electric Company
    Inventors: Eugene David Herrmann, James Anthony Cella, John Bradford Reitz, Racid Kerboua, Irene Dris
  • Patent number: 7148314
    Abstract: A method for preparation of a sulfonic and or sulfonic acid salt containing polyimide resins comprising melt reaction of a polyimide resin with an organic compound, wherein the organic compound contains at least one aliphatic primary amine functionality and at least one other functionality selected from the group consisting of sulfonic acids, sulfonic acid salts or mixtures thereof.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: December 12, 2006
    Assignee: General Electric Company
    Inventors: Robert R. Gallucci, Tara J. Smith
  • Patent number: 7144976
    Abstract: The present invention includes photocurable, liquid polymers incorporating coumarin ester endgroups into their molecular structure, which polymers are crosslinked upon irradiation with ultraviolet light by photochemically allowed [2+2] cycloaddition reactions among the chain ends, and which crosslinked polymers are useful in the preparation of medical devices, tissue engineering scaffolds, drug delivery systems and, in particular, in vivo preparation of implants in an open surgical procedure or laproscopically.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: December 5, 2006
    Assignee: Ethicon, Inc.
    Inventors: Takehisa Matsuda, Manabu Mizutani, Steven Arnold
  • Patent number: 7141643
    Abstract: A block copolymer is disclosed, which comprises a first block comprising polymerized units of an alkylene oxide and a second block comprising polymerized units of an alkylene oxide and a lactone, said copolymer being obtainable by polymerizing an alkylene oxide in the presence of an organic initiator to form said first block, and reacting the first block with a mixture of an alkylene oxide and a lactone. Such copolymers are found to have improved foam inhibition characteristics while maintaining their biodegradable properties.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: November 28, 2006
    Assignee: Cognis Performance Chemicals UK Ltd.
    Inventors: Elizabeth Dixon, John Robert Moxey
  • Patent number: 7138483
    Abstract: The energy levels (HOMO, LUMO) of the conjugated polymer are tuned independently, so that an energy match on both sides of the device can be accomplished while keeping the emission color in the blue region. Such polymers can be formed by polymerization of a mixture of monomers. The mixture of the monomers contains at least one monomer having an electron-deficient group sandwiched by two aromatic hydrocarbon groups (“Monomer (I)”) and at least one hole transporting (“HT”) monomer. The mixture of monomers may also contain a solubility enhancement (“SE”) monomer and/or a Branching Monomer. Such polymers can be used in fabricating light emitting diodes to achieve some of the best device performance to date including high efficiency and blue color purity.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: November 21, 2006
    Assignees: E.I. du Pont de Nemours and Company, DuPont Displays, Inc.
    Inventors: Hailiang Wang, Frank P. Uckert, Sunghan Kim
  • Patent number: 7138482
    Abstract: In the production method of polyamide of the present invention, the mole balance at a set point during melt polymerization is estimated from a pre-established equation for calculating the mole balance during melt polymerization from a melt viscosity. On the basis of the estimated mole balance, the subsequent conditions of melt polymerization of a batch and the polymerization conditions of the next and subsequent batches are determined. In addition, the mole balance, molecular weight and relative viscosity of melt-polymerized polyamide are estimated from pre-established equations each for respectively calculating the mole balance, molecular weight and relative viscosity at the end point of melt polymerization from the melt viscosity. The conditions for solid phase-polymerizing the melt-polymerized polyamide are determined on the basis of estimated values.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: November 21, 2006
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kazumi Tanaka, Hideyuki Kurose, Takatoshi Shida, Minoru Kikuchi
  • Patent number: 7129319
    Abstract: An absorbable crystalline, monocentric polyaxial copolymer comprising a central carbon or nitrogen atom and at least three axes, each of which includes an amorphous flexible component adjacent and originating from the central atom and a rigid, crystallizable component extending outwardly from the amorphous, flexible component is disclosed along with the use of such copolymer in medical devices which may contain a bioactive agent. The present invention also relates to a suture, stents, stent mantles and sealing devices made from the polyaxial copolymer.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: October 31, 2006
    Assignee: Poly Med Inc.
    Inventor: Shalaby W. Shalaby
  • Patent number: 7129318
    Abstract: Polyimide resins that are suitable for processing by resin transfer molding (RTM) and resin infusion (RI) methods at reduced processing temperatures are provided. The inventive RTM and RI processable polyimide resins exhibit melting at temperatures of less than about 200° C. and melt viscosities at 200° C. of less than about 3000 centipoise. A process for synthesizing the inventive resins is also provided, as is a fiber-reinforced composite material. The fiber-reinforced composite material employs the inventive polyimide resin as its resin matrix and demonstrates good heat resistance and mechanical properties.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: October 31, 2006
    Assignee: I.S.T. (MA) Corporation
    Inventors: Gary L. Deets, Jianming Xiong
  • Patent number: 7122618
    Abstract: The present invention relates to quaternized polyamidoamines which have at least one structural unit of the formula VII in which R1, R2, R4 are straight-chain or branched organic radicals optionally containing heteroatoms; R5 is hydrogen or alkyl, R7 is hydrogen or alkyl or two radicals R7 together form a radical having a meaning given for R4, b is an integer from 0 to 50, and c is an integer from 1 to 50. The invention also relates to the preparation of the quaternary polyamidoamines, to compositions which comprise these compounds, and to the use thereof for cosmetic and pharmaceutical purposes, and in the fields of crop protection and textile dyeing. The present invention also relates to the use of quaternized polyamidoamines of the ionene type as biostatic or biocide and thus also biocidal compositions based on quaternized polyamidoamines.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: October 17, 2006
    Assignee: Fraunhofer Gesellschaft zur Foerderung der Angewandteri Forschung E.V.
    Inventors: Helmut Witteler, Axel Sanner, John-Bryan Speakman, Christian Drohmann, Mathias Hahn, Werner Jaeger
  • Patent number: 7119163
    Abstract: A process for the continuous production of an ?-caprolactone polymer characterized by including heating an ?-caprolactone under reduced pressure or in an inert gas stream to volatilize the unreacted ?-caprolactone from the polymer and cooling the vapor phase part containing the matter volatilized to thereby recover the unreacted ?-caprolactone, wherein the amount of the ?-caprolactone to be recovered is regulated to larger than 5 times by weight the amount of caprolactone dimer.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: October 10, 2006
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Jun Watanabe, Shigeyuki Yoshida
  • Patent number: 7112647
    Abstract: An object of the present invention is to provide a fluorinated polymer of adequate molecular weight with excellent transparency in a wavelength range from visible to near infrared, and to also provide a method of producing such a polymer. The present invention provides a fluorinated polymer comprising a structure represented by a formula (1) as a structural unit, as well as a method of producing this polymer using a corresponding tetrafluoroxylylenediamine or a tetrafluoroxylylene glycol as a raw material.
    Type: Grant
    Filed: December 25, 2002
    Date of Patent: September 26, 2006
    Assignee: Showa Denko K.K.
    Inventors: Isamu Taguchi, Ryuji Monden, Nobutoshi Sasaki, Hideo Miyata, Kohei Morikawa
  • Patent number: 7105629
    Abstract: The present invention includes photocurable, liquid polymers incorporating coumarin ester endgroups into their molecular structure, which polymers are crosslinked upon irradiation with ultraviolet light by photochemically allowed [2+2] cycloaddition reactions among the chain ends, and which crosslinked polymers are useful in the preparation of medical devices, tissue engineering scaffolds, drug delivery systems and, in particular, in vivo preparation of implants in an open surgical procedure or laproscopically.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: September 12, 2006
    Inventors: Takehisa Matsuda, Manabu Mizutani, Steven Arnold
  • Patent number: 7098273
    Abstract: An object of the present invention is to improve the compatibility of the resin composition comprising the PAI resin and the PAS resin so as to provide a resin composition which is excellent in flowability when molten, strength, tenacity and heat resistance. A resin composition comprising: (1) 5 to 60 parts by weight of aromatic polyamide imide resin (A) having a weight average molecular weight (Mw) of 1,000 to 100,000 and having an amino group in an amount of 0.00002 to 0.002 mol/g in a molecule, (2) 95 to 40 parts by weight of polyarylene sulfide resin (B), and (3) 0.01 to 10 parts by weight of episulfide compound (C) based on 100 parts by weight of the total of (A) and (B).
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: August 29, 2006
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Toshiaki Yamada, Hajime Ban, Hiroyuki Kudo
  • Patent number: 7097908
    Abstract: The present invention relates to a multilayer structure comprising a transparent polyamide-based layer and a layer based on a thermoplastic polyurethane (TPU). The invention also relates to a decorated article consisting of an object to which the above structure has been bonded, the polyamide layer being on the outside. According to another embodiment, the polyamide/TPU structures may be bonded to a polyurethane foam or to a polyurethane resin. It is also possible to overmould the polyurethane foam or the polyurethane resin to the polyamide/TPU structure placed in a mould, the polyamide layer being adjacent to the mould wall. The structure obtained is useful, for example for making skis or sports shoes. The invention also relates to these structures. Advantageously, the polyamide layer is semicrystalline. Advantageously, the TPU layer is transparent. Each of the layers may be formed from several layers.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: August 29, 2006
    Assignee: Arkema
    Inventors: Christophe Lacroix, Thibaut Montanari
  • Patent number: 7094864
    Abstract: The present invention uses a reactor that combines devices having a special portion structure to solve the difficulty of uniform blending due to the reactants becoming highly viscous, the difficulty of heat removal, and the increase in pressure loss, thus leading to continuous production of a polyester-based polymer stably having excellent quality.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: August 22, 2006
    Assignee: Daicel Chemical Industries, Ltd.
    Inventor: Jun Watanabe
  • Patent number: 7090925
    Abstract: A material for dielectric films is a polymerizable composition containing an adamantanepolycarboxylic acid represented by following Formula (1): wherein X is a hydrogen atom, a carboxyl group or a hydrocarbon group; and Y1, Y2, Y3 and Y4 are the same as or different from one another and are each a single bond or a bivalent aromatic cyclic group; an aromatic polyamine represented by following Formula (2): wherein Ring Z is a monocyclic or polycyclic aromatic ring; and R1 and R2 are each a substituent bound to Ring Z, are the same as or different from each other and are each an amino group, a mono-substituted amino group, a hydroxyl group or a mercapto group; and a solvent other than ketones and aldehydes, in which the adamantanepolycarboxylic acid and aromatic polyamine are dissolved in the solvent
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: August 15, 2006
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Shinya Nagano, Jiichiro Hashimoto, Kiyoharu Tsutsumi, Yoshinori Funaki
  • Patent number: 7091306
    Abstract: The present invention relates to an improved process for preparing polyalkenylsuccinimides having a sediment level less than 0.1 vol % comprising the steps of: (a) preparing a polyalkenyl derivative of an unsaturated acidic reagent by (i) reacting a polyalkylene with an unsaturated acidic reagent in the absence of a strong acid until at least 25% of the polyalkylene is converted to a polyalkenyl derivative of an unsaturated acidic reagent; (ii) continuing the reaction with an excess of the unsaturated acidic reagent in the presence of a strong acid to convert at least some of the unreacted polyalkylene to additional polyalkenyl derivative of an unsaturated acidic reagent; and (iii) removing the unreacted unsaturated acidic reagent; (b) reacting the unfiltered product of step (a) with a polyamine having at least one basic nitrogen atom; (c) diluting the product of step (b); and (d) subsequently filtering the polyalkenylsuccinimide product.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: August 15, 2006
    Assignees: Chevron Oronite Company LLC, Chevron Oronite S. A.
    Inventors: Mohammed Heddadj, William R. Ruhe, Jr., Gilles P. Sinquin