Patents Examined by Richard D. Lovering
  • Patent number: 6440330
    Abstract: The invention involves the demulsification and liquefaction of hydrocarbon based sludges. A demulsifier and a liquefaction agent and methods of using the same are disclosed. In a preferred embodiment, the demulsifier contains a salt of DDBSA, polypropylene glycol, and citrene. In a preferred embodiment, the liquefaction agent contains a glycol ether and sodium silicate. In another preferred embodiment, the liquefaction agent contains a glycol ether and citrene. In preferred practice, the sludge is treated with the liquefaction agent, circulated, treated with the demulsifier, and circulated further. An object of the invention is to provide a hydrocarbon based sludge that is sufficiently liquefied to be pumped and which is sufficiently demulsified to allow the waters, oils, and solids in the sludge to separate.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: August 27, 2002
    Assignee: TexChem Group International, LLC
    Inventor: Gale Campbell
  • Patent number: 6441054
    Abstract: An exemplary surface active agent admixture composition of the invention comprises (1) a first surface active agent comprising a betaine, an alkyl or aryl or alkylaryl sulfonate, or mixture thereof; and (2) a second surface active agent comprising a nonionic oxyalkylene-containing polymer surfactant. The present invention therefore provides a system for ensuring the presence in a hydratable cementitious composition (when hardened) a sufficient air volume and sufficient air void fineness and consistency. Further exemplary admixture compositions may comprise one or more plasticizers and one or more clay activity-modifying agents. Cementitious compositions and methods for modifying cementitious compositions, which incorporate the above-mentioned surface active agent combination, are also described. The invention provides the ability to adjust and stabilize air void systems in hydratable cementitious compositions, while allowing conventional air entraining agent (AEA) dosage practices to be followed.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: August 27, 2002
    Assignee: W.R. Grace & Co.-Conn
    Inventors: Chia-Chih Ou, Ara A. Jeknavorian, Christon L. Hill
  • Patent number: 6437007
    Abstract: This invention pertains generally to precursors and deposition methods suited to aerogel thin film fabrication. An aerogel precursor sol which contains an oligomerized metal alkoxide (such as TEOS), a high vapor pressure solvent (such as ethanol) and a low vapor pressure solvent (such as water and 1-butanol) is disclosed. By a method according to the present invention, such a precursor sol is applied as a thin film to a semiconductor wafer, and the high vapor pressure solvent is allowed to evaporate while evaporation of the low vapor pressure solvent is limited, preferably by controlling the atmosphere adjacent to the wafer. The reduced sol is then allowed to gel at a concentration determined by the ratio of metal alkoxide to low vapor pressure solvent. One advantage of the present invention is that it provides a stable, spinnable sol for setting film thickness and providing good planarity and gap fill for patterned wafers.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: August 20, 2002
    Assignee: Texas Instruments Incorporated
    Inventors: Douglas M. Smith, Gregory P. Johnston, William C. Ackerman, Shin-Puu Jeng, Bruce E. Gnade
  • Patent number: 6432182
    Abstract: In accordance with the present invention, a method of treating the surface of an organic substrate, particularly a circuitized surface of an organic substrate, which method reduces the spread of adhesive resin that is subsequently deposited on the surface, is provided. This method comprises the steps of applying a treatment solution comprising a fatty acid compound, an alkalizing agent, and a solvent comprising water and from about 5% to about 90% by volume of an organic solvent selected from the group consisting of an alcohol, a glycol ether, and combinations thereof to the surface; and then removing substantially all of the solvent from the solution to provide a thin film on the surface of said substrate. The film comprises the fatty acids that were present in the treatment solution. In a preferred embodiment the treatment solution further comprises a chelating agent.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: August 13, 2002
    Assignee: International Business Machines Corporation
    Inventors: John Joseph Konrad, Konstantinos I. Papathomas, John A. Welsh
  • Patent number: 6432540
    Abstract: Flame retardant molding compositions that are substantially free of halogen, phosphorus, and antimony are disclosed. Also disclosed are the use of these flame retardant molding compositions to coat electronic devices such as integrated circuits.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: August 13, 2002
    Assignee: Loctite Corporation
    Inventor: Anthony A. Gallo
  • Patent number: 6428913
    Abstract: A functional film formed by coating a substrate with a coating composition having a partial hydrolyzate of a metallic compound containing a hydrolyzable reaction site, the partial hydrolyzate being a sol solution containing (1) a magnesium alkoxide, (2) diethanolamine, (3) water, and (4) an organic solvent. The coating may also be heated to form the functional film.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: August 6, 2002
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Toshio Yoshihara, Nobuko Takahashi, Satoshi Mitamura
  • Patent number: 6423303
    Abstract: Water-in-oil emulsions are disclosed that comprise (a) water; (b) from about 10 to 65% by weight of an oil; and (c) an emulsification system comprising a polysiloxane polyalkyl polyether copolymer and a phthalic anhydride derivative, substantially permanently maintaining the water and oil as an emulsion, the emulsification system and the emulsification system being substantially free from aluminum and zirconium salts, the emulsion being at a pH of from about 5 to 10.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: July 23, 2002
    Assignee: Stepan Company
    Inventors: Irma Ryklin, Branko Sajic
  • Patent number: 6422734
    Abstract: A static foam generating apparatus including a pipe having an inner diameter, an axis, an input end, and an output end is disclosed. A plurality of perforated discs are disposed in the pipe, the discs positioned parallel to each other and perpendicular to the pipe axis. A plurality of spacer rings are disposed within the pipe, a spacer ring separating each perforated disc from each adjacent perforated disc. Additionally, a method for generating foam including the steps of providing a static foam generating apparatus including a pipe having an inner diameter, an axis, an input end, and an output end, supplying feed water to the pipe, supplying surfactant to the pipe, and supplying air to the pipe is disclosed.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: July 23, 2002
    Assignee: National Gypsum Properties, LLC
    Inventors: Gopalakrishnan Sethuraman, Ronald S. Finkelstein, Larry W. Kingston, Robert C. Mitchell, W. Roy Burke
  • Patent number: 6420466
    Abstract: The invention relates to a process for preparing a solution that is active as a thixotropic agent and contains urea urethanes, in which monohydroxyl compounds are reacted with an excess of toluene diisocyanate, the unreacted portion of the toluene diisocyanate is removed from the reaction mixture and the monosiocyanate adduct obtained is further reacted with diarines in the presence of a lithium salt to form urea urethanes. The invention also relates to the use of the solution for imparting thixotropic properties to coating compounds.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: July 16, 2002
    Assignee: BYK-Chemie GmbH
    Inventors: Karlheinz Haubennestel, Ulrich Orth
  • Patent number: 6420437
    Abstract: A neutral titanium dioxide colloid sol having a high stability in a neutral range and capable of forming a colorless transparent coating even when dried at room temperature is produced by mixing an acid titanium dioxide sol comprising 50 to 100 parts by weight of titanium dioxide colloidal particles and 5 to 50 parts by weight of a chelating agent for titanium ions with 1 to 50 parts by weight of an alkaline substance comprising at least one of alkali metal compounds and amine compounds, and optionally by adjusting the pH value of the liquid mixture to 5 to 10, or adjusting the pH value of the liquid mixture to 6 to 10, and then applying a deionization treatment to the mixture to thereby charge the titanium dioxide colloidal particles with negative electricity.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: July 16, 2002
    Assignee: Nihon Parkerizing Co., Ltd.
    Inventors: Kazuhiko Mori, Mitsuru Nakamura, Masanobu Tanaka
  • Patent number: 6417316
    Abstract: Curable epoxy resin compositions, which are obtainable by heating a composition containing at least one epoxy compound, which contains on average at least one, preferably more than one, 1,2-epoxy group and optionally also one or several hydroxyl groups in the molecule, in the presence of at least one Lewis acid as catalyst, wherein the Lewis acid is a salt of trifluoromethanesulfonic acid or of perchloric acid, the counterion of which carries a 2- to 6-fold positive charge, until the epoxy value, measured in equivalent epoxy/kg (Eq/kg) of the starting material, has been reduced by 1 to 60 percent, preferably by 5 to 50 percent; a process for their preparation, and their use for the preparation of fully cured moulded compositions or coatings.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: July 9, 2002
    Assignee: Vantico Inc.
    Inventors: Rolf Wiesendanger, Walter Fischer
  • Patent number: 6414109
    Abstract: Provided is a process for producing a tetrahydrofuran polymer using a heteropoly-acid catalyst wherein the content of Al in the heteropoly-acid is 4 ppm or less.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 2, 2002
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventor: Takaharu Akedo
  • Patent number: 6409943
    Abstract: A radiotheraputical source of Rhenium188 comprises metallic Tungsten188 or a metal oxide of Tungsten188. Therapeutic device using Rhenium188 comprise a radioactive source for the in situ generation of Rhenium188 from Tungsten188.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: June 25, 2002
    Assignee: The State of Israel, Atomic Energy Commission
    Inventors: Efraim Lavie, Daniel Kijel, Eliahu Sayag, Yehoshua Michael Bettan
  • Patent number: 6410605
    Abstract: A process for preparing a solid particles-containing emulsion comprising mixing an oil droplets-in-water emulsion with lipophilic solid particles or a dispersion thereof, thereby allowing to include the lipophilic solid particles in the oil droplets. The solid particles-containing emulsion can be suitably used in paints, inks for ink jet printers, fiber-treated agents, coating materials, adhesives, skin cosmetics, hair cosmetics, and the like.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: June 25, 2002
    Assignee: Kao Corporation
    Inventors: Toshiya Shimada, Kouichi Funada, Hidetake Nakamura, Hideaki Kubo
  • Patent number: 6410635
    Abstract: Provided are curable coating compositions comprised of any of a variety of film-forming polymers containing reactive functional groups, a curing agent containing functional groups which are reactive with the functional groups of the polymer, and an exfoliated silicate material derived from a layered silicate which has been exfoliated with a polymer which is compatible with both the film-forming polymer and the curing agent. The inclusion of the exfoliated silicate material enhances coating properties such as adhesion, appearance, crater resistance, and rheology control.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: June 25, 2002
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Alan J. Kaylo, Richard F. Karabin, Tie Lan, Michael G. Sandala
  • Patent number: 6410615
    Abstract: An epoxy resin composition for semiconductor encapsulation comprising an epoxy resin, a phenolic resin, a hardening accelerator and an inorganic filler. The epoxy resin composition having the following properties (X) to (Z) does not cause the chip tilting attributable to resin flow during resin encapsulation, such as semiconductor element shifting or gold wire deformation, and can obtain highly reliable semiconductor devices: (X) the viscosity thereof as measured with a flow tester at 175° C. is from 50 to 500 P; (Y) the minimum melt viscosity thereof as determined from the temperature dependence of viscosity thereof as measured with a dynamic viscoelastic meter at a shear rate of 5 (1/s) is 1×105 poise or lower; and (Z) the ratio of the viscosity thereof as measured at 90° C. (Z1) to that as measured at 110° C. (Z2) both with a dynamic viscoelastic meter at a shear rate of 5 (1/s), (Z1/Z2), is 2.0 or higher.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: June 25, 2002
    Assignee: Nitto Denko Corporation
    Inventors: Takashi Taniguchi, Minoru Yamane, Tsutomu Nishioka, Tadaaki Harada, Toshitsugu Hosokawa, Kazuhiro Ikemura, Sadahito Misumi, Shinichi Ohizumi
  • Patent number: 6398866
    Abstract: One object of the present invention is an agent for the reduction of the degree of shrinkage in hydraulic binders, whereby said agent comprises an alkanolamine of formula R—NH—(AOH) wherein R is hydrogen or a linear or branched aliphatic or cyclic C1-C6-alkyl group, and A is a C2H4-group or C3H6-group, alone or in combination with hydroxy compounds and/or ethers. Furthermore a method for the reduction of the dry shrinkage of binders such as cement, admixed cement, puzzolanas and thereof produced mortars and concretes by means of such a shrinkage reducing agent is described.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: June 4, 2002
    Assignee: Sika AG, vorm. Kaspar Winkler & Co.
    Inventors: Franz Wombacher, Theodor A. Bürge, Urs Mäder
  • Patent number: 6399718
    Abstract: The present invention provides a polyurethane resin obtainable by (A) in a first reaction stage (A) reacting (a) one or more di- and/or polyisocyanates, (b) one or more compounds (b) which have at least one group which ensures dispersibility in water and more than one group which is reactive toward isocyanate groups, and (c) if desired, one or more compounds having at least 2 and not more than 3 OH groups to give an intermediate (A) having free isocyanate groups and having urethane groups, (B) in a second reaction stage (B) adding (d) one or more monoisocyanates to the intermediate (A) obtained in stage (A), and (C) subsequently reacting the resulting mixture (B) with one or more hydroxyl-containing polymers (D) to give the polyurethane resin (P), using less than 20% by weight, based on the weight of the polyurethane resin (solids content), of polyalkylene oxide diols and/or polyalkylene oxide polyols to prepare the polyurethane resin.
    Type: Grant
    Filed: February 21, 2000
    Date of Patent: June 4, 2002
    Assignee: BASF Coatings AG
    Inventors: Heinz-Peter Rink, Horst Hintze-Brüning, Peter Weinert
  • Patent number: 6391927
    Abstract: Dispersibility of thickener is constant for every lot and viscosity difference is little. Fine bubbles existing in the thicker in ink follower are removed. A step of homogenizing the thickener at any temperature within a range of 40° C. to 130° C. is included. Preferably, a step of homogenizing the thickener at any temperature within a range of 100° C. to 130° C. is included.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: May 21, 2002
    Assignee: Mitsubishi Pencil Kabushikikaisha
    Inventors: Norio Ogura, Youji Takeuchi, Kiyoshi Iwamoto, Tadashi Kamagata, Katsuhiko Shiraishi
  • Patent number: 6391338
    Abstract: The present invention is a method of preparing a system for delivering a bio-affecting agent and the composition prepared thereby. The invention includes forming a molecular dispersion of the bio-affecting agent in an increased energy state in a water-soluble polymer which is compatible with the bio-affecting agent. As a consequence of transforming the bio-affecting agent to an increased-energy condition and freezing it in such condition in a water-soluble polymer, the bio-affecting agent is made available (“bio-available”) to a bio-system upon dissolution of the polymer. This method and composition has been found extremely effective for delivery of otherwise substantially non-soluble drugs and other bio-affecting ingredients.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: May 21, 2002
    Assignee: Biovail Technologies Ltd.
    Inventors: Steven E. Frisbee, Garry L. Myers, Richard C. Fuisz, Andrea S. Blake, Robert K. Yang