Patents Examined by Fred Teskin
  • Patent number: 7709584
    Abstract: A process for preparing ethylene homopolymers and copolymers in a tubular reactor having two or more polymerization zones at temperatures of between 150° C. and 350° C. and pressures in the range from 500 to 5000 bar, using oxygen as initiator, which comprises using, as molar mass regulator, one or more aliphatic ketones of the formula I, where the variable R1 is a C1-C6-alkyl or C3-C12-cycloalkyl, ethylene homopolymers and copolymers obtainable therefrom and their user for producing injection-molded products in the cosmetics, medical and food sectors are described.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: May 4, 2010
    Assignee: Basell Polyolefine GmbH
    Inventors: Frank-Olaf Mähling, Andreas Deckers, Gernot Köhler, Axel Schmitz, Lars Wittkowski, Michael Hoppach
  • Patent number: 7459521
    Abstract: Polyolefins, preferably polyethylene, having a density of about 0.86 to about 0.93 g/mL, having three or more or branches of the formula (CH2CH2)mH wherein m is an integer of one or more, provided that said branched polyolefin has one both of the following properties: said branched polyolefin contains less than 2 methyl groups per 1000 methyl-ene atoms and at least 30 total branches per 1000 methylene groups; said branched polyolefin contains less than 0.3 branches of the formula —(CH2)5H per 1000 methylene groups; and in said branched polyolefin the level hexyl+ branches is at least 80% of the level of ethyl branches, and said polyolefin contains less than 2 methyl branches per 1000 methylene groups or less than 0.3 branches of the formula —(CH2)4CH3 per 1000 me-thylene groups or both, thereby allowing good seals to be formed rapidly. This is advantageous when heat sealing these polyolefins, for example in the form of single or multilayer films.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: December 2, 2008
    Assignee: E.I. DuPont de Nemours and Company
    Inventor: Joel Citron
  • Patent number: 7400941
    Abstract: The present technique provides for the use of spectroscopic probes, such as Raman probes, within the conduits of a polyolefin production system. The Raman probe or other spectroscopic probes may be used to obtain spectroscopic measurements of the contents of the conduits. The spectroscopic measurements may be processed and analyzed to determine the composition of the conduit contents. In addition, the spectroscopic measurements may be used in conjunction with correlations or other statistical models to determine one or more properties of interest of a constituent of the conduit contents. One or more processes upstream and/or downstream of the conduit may be adjusted in response to the determined composition or composition properties.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: July 15, 2008
    Assignee: Chrevron Phillips Chemical Company LP
    Inventor: David R. Battiste
  • Patent number: 7388055
    Abstract: The invention relates to functional norbornenes as initiators for radical polymerization, its polymer and fabrication method thereof. More particularly, the functional norbornenes can be selectively polymerized by ring-opening metathesis polymerization or radical polymerization to obtain various polynorbornene derivatives or grafted copolymer materials. The polynorbornene derivatives and grafted copolymer materials not only exhibit excellent functional properties but also enhanced physical and chemical properties after modification. The polynorbornene derivatives and grafted copolymer materials disclosed in the invention exhibit excellent heat resistance, transparency and water resistance. The invention also deals with a process for producing such derivatives and materials having controllable molecular weight with narrow molecular weight distribution.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: June 17, 2008
    Assignee: National Taiwan University of Science & Technology
    Inventors: Der-Jang Liaw, Ching-Cheng Huang, Jing-Yang Ju, Jiun-Tyng Liaw
  • Patent number: 7384994
    Abstract: Olefinic interpolymer compositions comprising the olefinic interpolymer, residuals from a transition metal catalyst and boron containing activator package, and a charge dissipation modifier and methods for making them. The compositions have dissipation factors that are at least 50% less than the corresponding olefinic interpolymer compositions which have not been treated with charge dissipation modifiers. The compositions are useful in wire and cable applications.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: June 10, 2008
    Assignee: Dow Global Technologies Inc.
    Inventors: Carlos Gilberto Ortiz, Peter Anthony Fox, Raymond L. Laakso, Jr., Gary R. Marchand, Steven R. Oriani, Walter Werner Schmiegel, Michael K. Laughner, Deepak R. Parikh
  • Patent number: 7384430
    Abstract: A component made from a crosslinked polymeric material, wherein the crosslinked polymeric material has a reduced crystallinity is described. An associated method for fabricating such a component is also described.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: June 10, 2008
    Assignee: DePuy Products, Inc.
    Inventors: Keith Greer, Richard S. King
  • Patent number: 7385002
    Abstract: The present invention relates to a process for preparing a resin binder for toner, comprising the steps of (A) carrying out an addition polymerization reaction of addition polymerization resin monomers including styrene in the presence or absence of an organic solvent; and (B) mixing the resulting reaction mixture from the step (A) with water at a rate of 0.002 to 0.5 parts by weight based on 100 parts by weight of the addition polymerization resin monomers per minute at a temperature of 100° to 300° C. during and/or after the step (A), wherein the amount of water to be mixed in the step (B) is 0.1 to 50 parts by weight based on 100 parts by weight of the addition polymerization resin monomers. The resin binder for a toner obtained according to the present invention can be used, for instance, for developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing method, and the like, and a toner containing the resin binder.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: June 10, 2008
    Assignee: Kao Corporation
    Inventors: Eiji Shirai, Tetsuya Ueno
  • Patent number: 7381782
    Abstract: The present invention provides a polymerizable composition and a resin formed object capable of providing a crosslinked cycloolefin resin formed object and a crosslinked cycloolefin resin composite excellent in heat resistance, more specifically, a polymerizable composition comprising a cycloolefin mixture containing 0.1 to 50 % by mole of a cycloolefin having, as a substituent group, a monovalent group including an aliphatic carbon-carbon unsaturated bond, a metathesis polymerization catalyst, and a radical generating agent; and formed objects produced by using a polymerizable composition described above which preferably further comprises a chain transfer agent and making the cycloolefin mixture undergo at least ring-opening polymenzation.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: June 3, 2008
    Assignee: Zeon Corporation
    Inventors: Tomoo Sugawara, Hirotoshi Tanimoto
  • Patent number: 7378465
    Abstract: A tire component including a tire tread that comprises a vulcanized rubber, a rubber filler, and a modified rubber, where the modified rubber i) contains pendent or functional groups that contain carboxylic acid or anhydride groups, ii) has pendently grafted thereto a polymerized metal salt of an unsaturated carboxylic acid, or iii) contains both i and ii. The use of such modified rubbers in tire components advantageously increases the G? of such components.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: May 27, 2008
    Assignee: Bridgestone Corporation
    Inventors: Chenchy Jeffrey Lin, William Hergenrother, Daniel Graves, Georg G. A. Böhm
  • Patent number: 7374527
    Abstract: A rubber roller, for use in an image-forming apparatus, which is formed by molding a rubber composition into the shape of a roller. In the rubber roller, a complex elastic modulus E* of rubber and a surface roughness Rz of the rubber roller satisfy a relationship indicated by an equation (1) shown below; and a hardness change of the rubber is set to not more than five points when the rubber ages at 70° C. for eight days: 7×Ln E*?0.12×Rz+3.0?10.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: May 20, 2008
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Akira Minagoshi
  • Patent number: 7368508
    Abstract: The present invention relates to novel functional norbornenes as initiators for radical polymerization, its polymer and a process for producing the same. More particularly, the novel functional norbornenes can be selectively polymerized by ring-opening metathesis polymerization or radical polymerization to obtain various polynorbornene derivatives or grafted copolymer materials. The polynorbornene derivatives and grafted copolymer materials not only exhibit excellent functional properties but also enhanced physical and chemical properties after modification. The polynorbornene derivatives and grafted copolymer materials disclosed in the present invention exhibit excellent heat resistance, transparency and water resistance. The present invention also deals with a process for producing such derivatives and materials having controllable molecular weight with narrow molecular weight distribution.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: May 6, 2008
    Assignee: National Taiwan University of Science & Technology
    Inventors: Der-Jang Liaw, Ching-Cheng Huang, Jing-Yang Ju, Jiun-Tyng Liaw
  • Patent number: 7368509
    Abstract: The present invention relates to novel functional norbornenes as initiators for radical polymerization, its polymer and a process for producing the same. More particularly, the novel functional norbornenes can be selectively polymerized by ring-opening metathesis polymerization or radical polymerization to obtain various polynorbornene derivatives or grafted copolymer materials. The polynorbornene derivatives and grafted copolymer materials not only exhibit excellent functional properties but also enhanced physical and chemical properties after modification. The polynorbornene derivatives and grafted copolymer materials disclosed in the present invention exhibit excellent heat resistance, transparency and water resistance. The present invention also deals with a process for producing such derivatives and materials having controllable molecular weight with narrow molecular weight distribution.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: May 6, 2008
    Assignee: National Taiwan University of Science & Technology
    Inventors: Der-Jang Liaw, Ching-Cheng Huang, Jing-Yang Ju, Jiun-Tyng Liaw
  • Patent number: 7365152
    Abstract: A process is described for preparing polyisobutene having a low halogen content, in which isobutene is polymerized in the presence of a catalyst which comprises a halogenated Lewis acid, the catalyst is removed and/or deactivated, and the resulting polyisobutene is contacted with a zeolite of an average pore size of from 5 to 15 ?.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: April 29, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Peter Rath, Thomas Perner, Eckard Schauss
  • Patent number: 7365132
    Abstract: A polymer support is provided which comprises protected hydroxypolyC2-4 alkyleneoxy chains attached to a cross-linked polymer wherein the protected hydroxypolyC2-4 alkyleneoxy chain contains from 2 to 10 C2-4 alkyleneoxy groups and wherein the hydroxypolyC2-4 alkyleneoxy chains are protected with an acid labile group. The acid labile protecting group is preferably a poly-aryl methane protecting group. A monomer and process for the preparation of said support are also provided.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: April 29, 2008
    Assignee: Avecia Biotechnology Inc.
    Inventors: David John Moody, Donald Alfred Wellings
  • Patent number: 7361716
    Abstract: A polymer comprising structural units of the formula I is prepared according to a novel method, in which the starting compound R1 ‘S—(CHR’2)—Ar—(CHR2)—SR1 is polymerized with a base, preferably in an aprotic solvent. The polymer comprises 50 to 1000 structural units of the formula I. The solution comprising the polymer thus prepared has a lower viscosity than a solution of a similar polymer with a greater chain length. The solution comprising the polymer thus prepared may be applied as a layer on a substrate. Electronic components with layers prepared with the polymer of the invention show better properties.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: April 22, 2008
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Wolter Ten Hoeve, Margaretha Maria De Kok, Bart-Hendrik Huisman, Peter Tobias Herwig, Albert Jos Jan Marie Van Breemen
  • Patent number: 7358293
    Abstract: A thermoplastic composition contains a polycarbonate resin, an aromatic vinyl copolymer, an impact modifier and a mineral filler, wherein the composition has a lightness L* of greater than or equal to about 70 under one or more of CIE D65, CWF-2 or C illumination using a 2° observer at 360 to 750 nanometers (nm), including specular components. Alternatively, a thermoplastic composition may contain a polycarbonate resin, a vinyl aromatic copolymer, an impact modifier and a mineral filler, and less than or equal to about 400 parts per million iron, by weight of the composition. An article may be formed by molding, extruding, shaping or forming such a composition to form the article.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: April 15, 2008
    Assignee: General Electric Company
    Inventor: Naveen Agarwal
  • Patent number: 7358290
    Abstract: A thermoplastic molding composition is disclosed. The composition that contains at least one member selected from the group consisting of aromatic polycarbonate and polyester carbonate, a rubber-modified vinyl (co)polymer, and calcium carbonate having average particle diameter of less than 100 nm is particularly suitable for making articles resistant to hydrolysis.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: April 15, 2008
    Assignee: Bayer MaterialScience AG
    Inventors: Eckhard Wenz, Thomas Eckel, Olaf Meincke, Holger Warth, Herbert Eichenauer
  • Patent number: 7358298
    Abstract: The present invention provides an adhesive composition containing a block copolymer, wherein the block copolymer has a polymer block (A) which is principally composed of a ?-methyl styrene unit, and a polymer block (B) which is principally composed of a conjugated diene unit and of which at least part of carbon-carbon unsaturated double bonds may be hydrogenated, and having a good holding power at high temperatures.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: April 15, 2008
    Assignee: Kuraray Co., Ltd.
    Inventors: Yoshihiro Morishita, Hiromichi Nakata, Kenichi Hamada, Kazushige Ishiura
  • Patent number: 7354970
    Abstract: A novel polyvinyl chloride copolymer paste resin comprising a copolymer of a vinyl chloride monomer and a macromonomer of the present invention can be synthesized with high productivity, and can provides a plastisol having high gelation properties, storage stability, superior tensile properties in low-temperature working conditions and heat resistance.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: April 8, 2008
    Assignee: Kaneka Corporation
    Inventors: Mitsuyoshi Kuwahata, Shinbe Matsuzaki, Toshihito Kawauchi, Nobuki Toba
  • Patent number: RE40816
    Abstract: A braided stent (1) for transluminal implantation in body lumens is self-expanding and has a radial expanded configuration in which the angle ? between filaments is acute. Some or all of filaments (6,7) are welded together in pairs at each end (4,5) of the stent to provide beads (8), thereby strengthening the stent and assisting its deployment from a delivery device. The stent is preferably completely coated using a biocompatible polymeric coating, said polymer preferably having pendant phosphoryl choline groups. A method of making the stent by braiding and welding is described as well as a delivery device for deploying the device. The present invention provides a biocompatible crosslinked coating and a crosslinkable coating polymer composition for forming such a coating.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: June 30, 2009
    Assignee: Biocompatibles UK Limited
    Inventors: Alistair Stewart Taylor, Peter William Stratford, Yiannakis Petrou Yianni, Matthew John Woodroffe, Lee Rowan