Patents Examined by Ling-Sui Choi
  • Patent number: 7838597
    Abstract: A fluid loss additive for hydraulic cement, comprising a polyvinyl alcohol resin and a fluid loss ameliorating sulfonic acid-functionalized co-resin, where the polyvinyl alcohol has a characteristic viscosity in the range of about 1 to about 25 cps. The invention includes, in some embodiments, an aqueous concentrate of the PVOH resin and the sulfonic acid-functionalized co-resin, where the total resin content is in the range of about 10% to about 40% and the viscosity is less than 15,000 cps. By way of the invention it is possible to adjust hydraulic cement slurry characteristics in real time upon demand and reduce inventory by providing a concentrated aqueous fluid loss additive.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: November 23, 2010
    Assignee: Sekisui Specialty Chemicals America, LLC
    Inventors: Michael E. George, Kristi J. Beckman, Freddie Lyn Sabins, Cory J. Sikora
  • Patent number: 7771470
    Abstract: Blue light blocking chromophore (BLBC) ophthalmic devices are disclosed. In an embodiment, BLBC is relatively concentrated in the device center gradually decreasing to the device edge to create a BLBC gradient.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: August 10, 2010
    Assignee: Key Medical Technologies, Inc.
    Inventor: Khalid Mentak
  • Patent number: 7718724
    Abstract: The present techniques provide a method for making wear surfaces comprising a thermoplastic matrix blended with ceramic particles. The wear surfaces may optionally contain other materials, such as friction modifying additives. Wear surfaces formed according to these techniques may be used to protect such surfaces as the side rails of conveyor belts, the teeth of buckets used on front end loaders, rock or debris chutes, and self dumping hoppers, among others.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: May 18, 2010
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: John L. DeCristofaro, Jason L. DeCristofaro, John Anthony Dispenza, Leon Klafter, Richard Thomas LaGrotta
  • Patent number: 7482413
    Abstract: The present invention relates to MgCl2.(EtOH),m(ROH)n(H2O)p adduct in which R is a C1-C15 hydrocarbon group different from ethyl, n and m are indexes, higher than 0, satisfying the equations (n+m)?0.7 and 0.05?n/(n+m)?0.95 and p is a number ranging from 0 to 0.7 with the proviso that when R is methyl and (n+m) is in the range of 0.7 to 1, the value of n/(n+m) ranges from 0.05 to 0.45. The catalyst components obtained from the adducts of the present invention are capable to give catalysts for the polymerization of olefins characterized by enhanced activity with respect to the catalysts prepared from the adducts of the prior art.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: January 27, 2009
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Giampiero Morini, Giulio Balbontin, Fabrizio Piemontesi, Maria Fusto, Gianni Vitale, Giansiro Prini
  • Patent number: 7420021
    Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 98.0 to 99.9 mol percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 2.0 to 0.1 mol percent of one or more alkoxysilane compounds.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: September 2, 2008
    Assignee: Union Carbide Chemicals & Plastics Technology LLC
    Inventor: Linfeng Chen
  • Patent number: 7408013
    Abstract: The invention pertains to low polydispersity copolymers useful for photoimaging and photoresist compositions, and to the photoimaging processes which use these compositions. The low polydispersity copolymers of this invention are prepared using controlled radical polymerization (CRP) techniques, such as RAFT (reversible addition fragmentation chain transfer) polymerization.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: August 5, 2008
    Assignee: Commonwealth Scientific and Industrial Research Organization
    Inventors: Andrew Edward Feiring, Michael Fryd, Frank Leonard Schadt, III
  • Patent number: 7405252
    Abstract: A vinyl chloride resin composition comprising 100 parts by mass of a vinyl chloride resin and a co-ground mixture of (a) 0.001 to 10 parts by mass of at least one member selected from the group consisting of an organic phosphoric ester compound and a metal salt thereof and (b) 0.001 to 10 parts by mass of a grinding aid. The composition is excellent in transparency, heat stability, and heat discoloration resistance.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: July 29, 2008
    Assignee: Adeka Corporation
    Inventors: Hidehiro Ishizuka, Daisuke Takeda, Yutaka Yonezawa
  • Patent number: 7402637
    Abstract: The invention relates to a method for producing a poly-1-olefin by polymerization of a 1-olefin of the formula R4C?CH2, in which R4 is hydrogen or an alkyl radical having from 1 to 10 carbon atoms, in suspension, in solution or in the gas the gas phase, at a temperature of from 20 to 200° C. and a pressure of from 0.5 to 50 bar, in the presence of a catalyst which consists of the product of the reaction of a magnesium alkoxide with a transition-metal compound (component a) and an organometallic compound (component b), whose component (a) has been produced by reacting a transitionmetal compound of titanium, zirconium, vanadium or chromium with a gelatinous dispersion of the magnesium alkoxide in an inert hydrocarbon.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: July 22, 2008
    Assignee: Bassell Poliolefine GmbH
    Inventors: Ludwig Böhm, Joachim Berthold
  • Patent number: 7396891
    Abstract: Aqueous coating compositions containing (1) a first polymer containing reactive functional groups with a selected level of carboxylic acid functionality and (2) a polyfunctional crosslinker agent containing functional groups that are reactive with appropriate functional groups of the first polymer, are disclosed. The two-component polymer compositions provide a combination of durability and ready removability of the final coating after curing. Two-component polymer compositions based on the first polymer containing hydroxyl functionality in addition to carboxylic acid functionality and use of a polyisocyanate as the polyfunctional crosslinker agent are especially useful as floor polish compositions.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: July 8, 2008
    Assignee: Rohm and Haas Company
    Inventors: Richard Thomas Gray, Alan Wayne Kohr, Dennis Michael Sharpe, Theodore Tysak
  • Patent number: 7393510
    Abstract: A method for removing contaminants from a process stream that includes the use of reticulated material to filter the process stream in a vessel located upstream of a process unit. The reticulated material can be used with other conventional filter media within the vessel.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: July 1, 2008
    Assignee: Crystaphase International, Inc.
    Inventors: John N. Glover, William D. Duke, Peter G. Ham
  • Patent number: 7393909
    Abstract: A porous, molecularly imprinted polymer and a process for its preparation are described. The porous, molecularly imprinted polymer is characterized in that it is obtainable by providing a porous silica; attaching a molecular template to the surface of the porous silica; filling the pores of the porous silica with a polymer, removing the silica and the molecular template, thereby leaving a porous, molecularly imprinted polymer. The process is characterized by the above defined process steps. Also described are a porous polymer vesicle and its preparation with the same features as defined for the porous, molecularly imprinted polymer and its preparation, except for the lack of the molecular template and thus the lack of the molecular imprint in the porous polymer.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: July 1, 2008
    Assignee: MIP Technologies AB
    Inventors: Börje Sellergren, Gunter Buchel
  • Patent number: 7390860
    Abstract: Polymerization processes in a bulk loop reactor are described herein. In particular, a method of contacting a flow of metallocene with a flow of propylene is provided. This method includes directing the flow of metallocene towards a junction, directing the flow of propylene towards the junction and maintaining a portion of the flow of metallocene separate from a portion of the flow propylene within a portion of the junction downstream of the flow of propylene into the junction. In another embodiment, a method of introducing a quantity of antifouling agent into a catalyst mixing system is provided. In this embodiment a portion of the antifouling agent is introduced at or downstream of a point of contact of a stream of propylene with a stream of catalyst. The antifouling agent may be a member, alone or in combination with other members, selected from Stadis 450 Conductivity Improver, Synperonic antifouling agent, and Pluronic antifouling agent.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: June 24, 2008
    Assignee: Fina Technology, Inc.
    Inventors: Ronald Tharappel, Renaud Oreins, William Gauthier, David Attoe, Kevin McGovern, Michel Messiaen, David Rauscher, Kai Hortmann, Michel Daumerie
  • Patent number: 7390764
    Abstract: This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises a post-contacted organometal compound, a post-contacted organoaluminum compound, and a post-contacted fluorided silica-alumina.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: June 24, 2008
    Assignee: Phillips Petroleum Company
    Inventors: Max P. McDaniel, Elizabeth A. Benham, Michael D. Jensen, Joel L. Martin, Gil R. Hawley
  • Patent number: 7388060
    Abstract: The invention relates to a catalyst component for olefin (co)polymerization, to preparation thereof, to a catalyst comprising the same, and to use thereof in olefin (co)polymerization. The catalyst component of the invention comprises magnesium, titanium, halogen, inner electron donor compound, and alkoxy group derived from a surface modifier, wherein the content of the alkoxy group derived from the surface modifier is in a range of from 0.01 to 3 percent by weight, based on the weight of the catalyst component.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: June 17, 2008
    Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry
    Inventors: Zhiwu Wang, Zhong Tan, Zhengyang Guo, Kai Zhang, Tianyi Li, Jun Xiao, Peng Kou, Liang Pan, Li'an Yan, Xingbo Li, Huijuan Xu, Haixiang Cui, Yu Wang, Ling Yang
  • Patent number: 7385005
    Abstract: A polyvinylacetal resin powder with a low metal content, being excellent in transparency, moisture resistance and electrical insulating properties and having a large specific surface area, and a process for its production, are presented. A polyvinylacetal resin powder obtained by reacting polyvinyl alcohol and an aldehyde in the presence of an acid catalyst, which has an acetalization degree of at least 60 mol %, a specific surface area of from 1.50 to 3.50 m2/g, a bulk density of from 0.12 to 0.19 g/cm3, an average particle diameter of from 0.5 to 2, 5 ?m and a metal content of at most 80 ppm.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: June 10, 2008
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshihiro Mashiko, Toshiaki Kawanishi, Koichi Matsunaga, Manabu Tsuzuki, Kazumasa Matsuoto, Koki Goto, Hitoshi Watanabe
  • Patent number: 7385019
    Abstract: Water-based fluids that can viscosify under shear or can produce a gel or form a gel under shear are obtained by dissolving polymers in an aqueous phase. These polymers comprise three types of functional groups: non-ionic functional groups that are hydrosoluble at the temperature under consideration, ionic functional groups, and functional groups that are hydrophobic at the temperature under consideration. These three types of functional groups can be distributed or spread in a random distribution along the polymer chain. A slightly block distribution is acceptable. For applications to oil wells, functional groups are used which exhibit LCST (Lower Critical Solution Temperature) behavior (i.e., a low critical solution temperature) instead of hydrophobic functional groups. At temperatures below the LCST, the functional groups are hydrophobic.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: June 10, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: Pierre Maroy, Arnaud Cadix, Dominique Hourdet, Ilias Iliopoulos, Françoise Lafuma
  • Patent number: 7385020
    Abstract: A pressure sensitive adhesive composition comprising a 2-octyl (meth)acrylate/(meth)acrylic acid copolymer and a crosslinking agent is described. The adhesive composition may be derived from renewable resources and provides good peel, shear and high temperature stability.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: June 10, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Kelly S. Anderson, Kevin M. Lewandowski, Duane D. Fansler, Babu N. Gaddam, Eugene G. Joseph
  • Patent number: 7381783
    Abstract: The present invention relates to a process for the polymerization of monomers utilizing a bulky ligand hafnium transition metal metallocene-type catalyst compound, to the catalyst compound itself and to the catalyst compound in combination with an activator. The invention is also directed to an ethylene copolymer composition produced by using the bulky ligand hafnium metallocene-type catalyst of the invention, in particular a single reactor polymerization process.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: June 3, 2008
    Assignee: Univation Technologies, LLC
    Inventors: Donald R. Loveday, Moses Olukayode Jejelowo, Sun-Chueh Kao
  • Patent number: 7381780
    Abstract: Improved catalyst compositions, and polymerization processes using such improved catalyst compositions, are provided. An example of an improved catalyst composition is a supported catalyst system that includes at least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator compound, and at least one silica support material, the at least one silica support material having a median particle size in the range of from 20 to 50 microns with no more than 10% of the particles having a size less than 10 microns and no more than 10% of the particles having a size greater than 50 microns and average pore diameter of at least ?220 angstroms.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: June 3, 2008
    Assignee: Univation Technologies, LLC
    Inventors: Maria A. Apecetche, Phuong A. Cao, Michael D. Awe, Ann M. Schoeb-Wolters, Ryan W. Impelman
  • Patent number: 7378188
    Abstract: An apparatus and method for sorption and desorption of molecular gas contained by storage sites of graphite nano-filaments randomly disposed in three-dimensional reticulated aerogel.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: May 27, 2008
    Assignees: EnerNext, LLC
    Inventors: Ralph C. Struthers, David B. Chang, Reza Toossi, Sion Ahdout, Lijuan Li, Robert G. Palomba