Patents by Inventor David Cowan
David 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).
-
Publication number: 20120276602Abstract: The present invention relates to a method for treatment of oil with a lipolytic enzyme which comprises contacting of the oil with particles of base-containing porous amorphous silica.Type: ApplicationFiled: October 19, 2010Publication date: November 1, 2012Applicant: Novozymes A/SInventors: Kaare Joergensen, Hanna Maria Lilbaek, Lars Saaby Pedersen, David Cowan, Hans Christian Holm, Hon Seng Yee, Jan Hemann
-
Patent number: 8101102Abstract: 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: GrantFiled: December 4, 2006Date of Patent: January 24, 2012Assignee: NOVA Chemicals Inc.Inventors: Jiansheng Tang, Michael T. Williams, David A. Cowan
-
Patent number: 8101101Abstract: 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: GrantFiled: December 4, 2006Date of Patent: January 24, 2012Assignee: NOVA Chemicals Inc.Inventors: Jiansheng Tang, Jeffory E. Russell, Christine Hetzer, David A. Cowan
-
Patent number: 8095612Abstract: The present invention provides methods and systems to score messages exchanged over a network. The methods and systems may gather message interactions of a recipient. A message originating from a sender and destined for the recipient may be received at an email client. A sender score of the message may be determined based on one or more of sender information, the gathered message interactions, and one or more attributes associated with the message. The message may be marked with the determined score in a user interface associated with the email client.Type: GrantFiled: September 18, 2009Date of Patent: January 10, 2012Assignee: MailRank, Inc.Inventors: David Cowan, Ethan Kurzweil, James Cham
-
Patent number: 8029617Abstract: 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: GrantFiled: November 4, 2009Date of Patent: October 4, 2011Assignee: 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: 20110214391Abstract: 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: ApplicationFiled: May 9, 2011Publication date: September 8, 2011Applicant: NOVA CHEMICALS INC.Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary Margaret Moore, Jay Bowman
-
Patent number: 7964272Abstract: 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: GrantFiled: October 31, 2007Date of Patent: June 21, 2011Assignee: NOVA Chemicals Inc.Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Jay Bowman
-
Publication number: 20110106085Abstract: An occipital plating system includes a plating assembly with a plate body defining a profile adapted for positioning on the occiput. The plate body includes a central portion that extends bi-laterally across the central axis of the spinal column to opposite lateral portions of the plate. At least one coupling member extends from each of the lateral portions of the plate body to receive a connecting element extending from the spinal column.Type: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Applicant: Warsaw Orthopedic, Inc.Inventors: William Barry Null, Marc Thomas Paul, Benjamin David Cowan, Jayant Jangra
-
Patent number: 7802342Abstract: 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: GrantFiled: July 25, 2007Date of Patent: September 28, 2010Assignee: The Acker-Cowan Group, L.L.C.Inventors: Benjamin David Cowan, James Frank Acker
-
Patent number: 7798830Abstract: 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: GrantFiled: September 12, 2008Date of Patent: September 21, 2010Assignee: Qwick Systems, LLCInventors: Scott Schneider, Brandon Jarvis, David Cowan
-
Patent number: 7790302Abstract: 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: GrantFiled: December 11, 2009Date of Patent: September 7, 2010Assignee: NOVA Chemicals Inc.Inventors: Tricia Ladely (Guevara), Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary Margaret Moore, legal representative, Jay Bowman
-
Patent number: 7785711Abstract: 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: GrantFiled: April 29, 2010Date of Patent: August 31, 2010Assignee: NOVA Chemicals Inc.Inventors: Jiansheng Tang, David A. Cowan, Dennis H. Piispanen, Michael T. Williams
-
Patent number: 7744692Abstract: A lightweight cementitious 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 10 to 50 volume percent of sand and/or other fine aggregate, where at least a portion of the sand and/or fine aggregate has a fineness modulus of less than 2; where the sum of components used does not exceed 100 volume percent, and where after the lightweight cementitious composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The cementitious composition can be used to make concrete masonry units, construction panels, road beds and other articles.Type: GrantFiled: March 22, 2006Date of Patent: June 29, 2010Assignees: Nova Chemicals, Inc., Metromont CorporationInventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary M. Moore, legal representative, Blain Hileman, Richard H. Pennell, Jr.
-
Patent number: 7699929Abstract: 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: GrantFiled: August 13, 2008Date of Patent: April 20, 2010Assignee: 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: 20100088984Abstract: 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: ApplicationFiled: December 11, 2009Publication date: April 15, 2010Applicant: NOVA Chemicals Inc.Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Jay Bowman
-
Publication number: 20100077041Abstract: The present invention provides methods and systems to score messages exchanged over a network. The methods and systems may gather message interactions of a recipient. A message originating from a sender and destined for the recipient may be received at an email client. A sender score of the message may be determined based on one or more of sender information, the gathered message interactions, and one or more attributes associated with the message. The message may be marked with the determined score in a user interface associated with the email client.Type: ApplicationFiled: September 18, 2009Publication date: March 25, 2010Applicant: MAILRANK, INC.Inventors: David Cowan, Ethan Kurzweil, James Cham
-
Publication number: 20100064943Abstract: 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: ApplicationFiled: November 4, 2009Publication date: March 18, 2010Applicant: NOVA CHEMICALS INC.Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary Margaret Moore, Tobias Blain Hileman
-
Patent number: 7666258Abstract: 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: GrantFiled: February 24, 2006Date of Patent: February 23, 2010Assignee: NOVA Chemicals Inc.Inventors: Tricia Guevara, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary Margaret Moore, legal representative
-
Patent number: D655833Type: GrantFiled: April 15, 2010Date of Patent: March 13, 2012Inventors: David Cowan, Pepin Sebastian Gelardi, Petar Miskovic
-
Patent number: RE43253Abstract: 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: GrantFiled: April 29, 2010Date of Patent: March 20, 2012Assignee: NOVA Chemicals Inc.Inventors: Tricia Guevara Ladely, Michael T. Williams, David A. Cowan, John K. Madish, Kolapo Adewale, Roger Moore, Mary Margaret Moore, legal representative, Blain Hileman