Patents by Inventor David A. Cowan

David A. Cowan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7644548
    Abstract: A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, road beds and other articles.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: January 12, 2010
    Assignee: NOVA Chemicals Inc.
    Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary Margaret Moore, legal representative, Tobias Blain Hileman
  • Publication number: 20090240208
    Abstract: A syringe having two or more chambers having a needle defining two or more lumens for injecting a microparticle suspension into a desired space, the lumens being in fluid communication with respective chambers. One of the chambers has the microparticle suspension disposed therein while the other chamber is empty. The lumen in fluid communication with the empty chamber has a filter element disposed therein such that the suspension fluid may be withdrawn from the space into the empty chamber without withdrawing the microparticles.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 24, 2009
    Applicant: Warsaw Orthopedic, Inc.
    Inventor: Benjamin David Cowan
  • Publication number: 20090107578
    Abstract: A tire-sealing apparatus for injecting a sealing composition into a vehicle tire either as a prophylactic or for sealing an existing leak is in the form of a pressurizeable container for a flowable sealant compound. An inlet is provided for introducing compressed gas into the container to pressurize its contents. An outlet line is also provided to deliver the sealant into a tire, the pressurized gas acting on contents of the container and providing the motive force for the delivery. A dip tube extends into the compound and is coupled to a one-way valve to provide a controlled flow of the compound from the container into the tire while preventing back pressure of the tire from either delivering air or compound back into the container. A passageway between the outlet tube and an interior of the container is provided to allow a flow of compressed gas within the container into the outlet tube along with the sealant.
    Type: Application
    Filed: May 30, 2008
    Publication date: April 30, 2009
    Inventors: Saul Trachtenberg, David Cowan, Neal McLaughlin
  • Publication number: 20090104703
    Abstract: The invention provides isolated nucleic acid and amino acid sequences of sensory cell specific polypeptides, antibodies to such polypeptides, methods of detecting such nucleic acids and polypeptides, and methods of screening for modulators of sensory cell specific polypeptides.
    Type: Application
    Filed: December 2, 2008
    Publication date: April 23, 2009
    Applicant: The Regents of the University of California
    Inventors: Charles S. Zuker, Jon E. Adler, Juergen Lindemeier, David Cowan
  • Publication number: 20090075505
    Abstract: An electrical switch and outlet design which includes a modular electrical component system having a universal connector which can receive replacement switches, sockets and other electrical components. The connection between these switches, sockets or other components and the universal connector is controlled by a lifting system in which the entirety of the replacement module is inserted into a receptacle or removed therefrom without the user touching any electrical wiring. Essentially, components are changed by plugging a component into and unplugging one from a universal grounded connector.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 19, 2009
    Inventors: Scott Schneider, Brandon Jarvis, David Cowan
  • Publication number: 20080314295
    Abstract: A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, road beds and other articles.
    Type: Application
    Filed: August 13, 2008
    Publication date: December 25, 2008
    Applicant: NOVA CHEMICALS INC.
    Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adelwale, Roger Moore, Mary Margaret Moore, Tobias Blain Hileman
  • Publication number: 20080057290
    Abstract: A lightweight cementitious composition containing from 22 to 90 volume percent of a cement composition and from 10 to 78 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, where after the lightweight cementitious composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39. The cementitious composition can be used to make concrete masonry units, construction panels, road beds and other articles and can be included as a layer on wall panels and floor panels and can be used in insulated concrete forms. Aspects of the lightweight cementitious composition can be used to make lightweight structural units.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 6, 2008
    Applicant: NOVA CHEMICALS INC.
    Inventors: Tricia Guevara, Michael Williams, David Cowan, John Madish, Kolapo Adewale, Roger Moore, Jay Bowman
  • Publication number: 20080023032
    Abstract: An acoustic ceiling removal tool and associated method are provided wherein an elongated tubular handle defines a longitudinal cavity, and a scraping head is connected to a distal end of the handle. The scraping head has a manifold with a proximal end in fluid communication with the longitudinal cavity and an opposing open end defining a comparatively larger cross sectional area than the proximal end, a scraper blade supported by the manifold to dispose an operative scraping edge of the scraper blade adjacent the open end of the manifold, and an elastomeric boot sealingly engaging the proximal end of the manifold and extending therefrom to circumscribe the open end of the manifold.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 31, 2008
    Applicant: The Acker-Cowan Group, L.L.C.
    Inventors: Benjamin David Cowan, James Frank Acker
  • Publication number: 20070204862
    Abstract: Various apparatus are disclosed for controlling the combustion air vent of fuel-fired furnaces. For a first embodiment of the invention, a furnace-controlled air valve is placed in the combustion air duct. When the furnace begins a heating cycle, the valve is opened. When the heating cycle ends, the valve is closed and remains closed until the beginning of the next heating cycle. For a second embodiment of the invention, a positive-displacement air pump is placed in the combustion air duct. The air pump pumps air from the exterior into the mechanical room at a controlled rate during each heating cycle of the furnace. The air valve or the air pump is controlled directly or indirectly by the furnace thermostat.
    Type: Application
    Filed: February 7, 2007
    Publication date: September 6, 2007
    Inventor: Scott David Cowan
  • Publication number: 20070208751
    Abstract: A content modification platform facilitates personalized presentation and interaction associated with content such as web content, document content, transactional content, multimedia content, and the like. The platform provides sharing of personalization features to facilitate developing a community view of content, such as the internet Menu features are configured to modify source content through simple commands such as add, delete, replace targeted toward content and links to content. The content modification platform is beneficially and effectively used in a variety of on-line content types, environments, transactions, business activity, e-commerce, stock trading, education, human resources and many others. By facilitating a user defining what relationships between and among content is important to them, a customized view of the internet can be presented to the user.
    Type: Application
    Filed: November 22, 2006
    Publication date: September 6, 2007
    Inventors: David Cowan, Justin Label, Johan Sundstrom
  • Publication number: 20070191479
    Abstract: This invention relates to non-steroidal compounds that are modulators of androgen, glucocorticoid, mineralocorticoid, and progesterone receptors, and also to the methods for the making and use of such compounds.
    Type: Application
    Filed: March 3, 2005
    Publication date: August 16, 2007
    Inventors: Philip Turnbull, Rodolfo Cadilla, David Cowan, Andrew Larkin, Istvan Kaldor, Eugene Stewart
  • Publication number: 20070148386
    Abstract: A method for improving the resistance of fumigant sorption in a produce container made of expandable polystyrene particles in a fumigation process, and related produce container. Expandable polystyrene particles having a density ranging from 40.0 to 32.0 pounds per cubic foot and a blowing agent amount ranging from 2.5 to 7.5 weight percent are pre-expanded to form pre-expanded particles having a core bulk density ranging from 12.5 to 2.0 pounds per cubic foot, and a skin density ranging between 40.0 and 32.0 pounds per cubic foot and a thickness ranging from 0.1 to 2 microns. These pre-expanded particles are injected into a mold to form a produce container having a wall thickness ranging from 0.25 to 2.0 inches.
    Type: Application
    Filed: December 4, 2006
    Publication date: June 28, 2007
    Inventors: Jiansheng Tang, Michael T. Williams, David A. Cowan
  • Publication number: 20070148385
    Abstract: Methods for improving the resistance of fumigant sorption in produce containers made from expandable polystyrene particles in a fumigation process, and related produce containers. An embodiment involves pre-expanding the expandable polystyrene particles to form pre-expanded particles; applying a coating comprised of a chemical selected from the group consisting of mineral oil, polyethylene wax, ethylene vinyl alcohol copolymer, and polyethylene glycol to the pre-expanded particles and in amount of 0.05 to 5.0 parts per hundred; and forming the container from the pre-expanded particles. A further embodiment involves applying the chemical coating to the expandable particles; pre-expanding the expandable polystyrene particles to form pre-expanded particles; and forming the containers from the pre-expanded particles. Other methods involve increasing the cell size of the expandable particles used to form the produce container.
    Type: Application
    Filed: December 4, 2006
    Publication date: June 28, 2007
    Inventors: Jiansheng Tang, Jeffory E. Russell, Christine Hetzer, David A. Cowan
  • Publication number: 20070138341
    Abstract: A transformable skin. The transformable skin includes a first mechanism for enabling a first type of deformation of the skin. A second mechanism resists a second type of deformation that is different than the first type of deformation in direction or form. In a more specific embodiment, the first mechanism and the second mechanism are interconnected. The first type of deformation is strain deformation along a first path that is inline with a first axis of the skin. In the specific embodiment, the second type of deformation includes shear deformation and strain deformation that is inline with a second axis that is approximately perpendicular to the first axis. The first mechanism includes a plural partially planar spring structures arranged parallel to each other. The plural partially planar spring structures are resistant to bending and are interconnected via rigid connecting structures. The spring structures are partially planar, and the connecting structures are covered with an elastomeric material.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 21, 2007
    Inventors: Shiv Joshi, David Cowan
  • Publication number: 20070123548
    Abstract: This invention relates to compounds of formula (I) or (II) wherein, in either formula, independently; R1 and R2 are the same or are different and are C1-8 alkyl, C2-8 alkylene, C3-8 cycloalkyl, aryl, heteroaryl, heterocycloalkyl, C3-6 cycloalkylaryl, or heterocycloaryl; wherein said alkyl, alkylene, cycloalkyl, aryl, heteroaryl, heterocyclyl, cycloalkylaryl, or heterocycloaryl are unsubstituted or substituted by one or more groups selected from the group consisting of halogen, C1-8 alkyl, C1-8alkoxy, C1-8thioalkoxy, cycloalkyl, aryl, heteroaryl, heterocycloalkyl, CF3, SCF3, NHC(O)nR5, S(O)mR5, S(O)2NR5R6, C(S)NR5R6, CONR5R6, C(O)nR5; n is 0, 1 or 2; m is 0, 1 or 2; R5 is hydrogen, alkyl, aryl, alkylaryl, heterocycloalkyl, or heteroaryl and is unsubstituted or substituted by one or more groups selected from the group consisting of alkyl, C1-8alkoxy, aryl, heteroaryl, halogen, NO2, CN, N3, SCF3, and CF3; R6 is hydrogen, alkyl, aryl, alkylaryl, heterocycloalkyl, or heteroaryl and is unsubstituted or sub
    Type: Application
    Filed: February 3, 2005
    Publication date: May 31, 2007
    Inventors: David Cowan, Frank Navas III, Jeffrey Oplinger
  • Publication number: 20070027224
    Abstract: A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate, where the particles contain an antimicrobial agent; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, dining tables, counter surfaces, bench tops, and/or examination tables as well as other articles.
    Type: Application
    Filed: September 14, 2006
    Publication date: February 1, 2007
    Inventors: David Cowan, Tricia Guevara, Gary Matz
  • Publication number: 20070017440
    Abstract: A system, apparatus, and method for coating and curing disposable containers, e.g. cups that are made from thermoplastic particles, e.g. expandable polystyrene particles (EPS), and that are coated with a coating, e.g. latex coating. The system comprises a preparation station, a coating station, a curing station, and a container handling station. An apparatus comprising a rotatable wheel is used to position the containers into the several stations. The rotatable wheel contains a plurality of container holding means that consists of vacuum means selectively operable for retaining and releasing the containers relative to the stations and a rotatable platform for selectively rotating the containers to evenly apply and/or dry the coating on the containers and to increase the production rate for coating and/or curing the containers.
    Type: Application
    Filed: July 7, 2006
    Publication date: January 25, 2007
    Inventors: Jiansheng Tang, David Cowan, Dennis Piispanen
  • Publication number: 20060252867
    Abstract: Expandable or pre-expanded thermoplastic particles, e.g. polystyrene particles, used to form foam containers e.g. cups, bowls, are coated with a coating composition comprising a liquid part consisting of a) liquid polyethylene glycol with an average molecular weight of 200 to 800; and a solid part comprising components selected from the group consisting of b) polyolefin wax, e.g. polyethylene wax, c) a metal salt of higher fatty acids, e.g. zinc stearate or calcium stearate; d) polyethylene glycol with an average molecular weight of 900 to 10,000; and e) a fatty bisamide or fatty amide, e.g. ethylene bis-stearamide; and combinations of b) through e). The coating composition prevents or resists leakage of liquids and foods with oil and/or fatty components and improves the rim strength and ATF properties of foam containers.
    Type: Application
    Filed: July 3, 2006
    Publication date: November 9, 2006
    Inventors: Jiansheng Tang, David Cowan, Dennis Piispanen, Michael Williams
  • Publication number: 20060225618
    Abstract: A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, road beds and other articles.
    Type: Application
    Filed: March 22, 2006
    Publication date: October 12, 2006
    Inventors: Tricia Guevara, Michael Williams, David Cowan, John Madish, Kolapo Adewale, Roger Moore, Tobias Hileman, Mary Moore
  • Patent number: D583206
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: December 23, 2008
    Assignee: Trans Tech Products, LLC
    Inventors: Saul Trachtenberg, David Cowan, Neal McLaughlin