Patents by Inventor David Strickland

David Strickland 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: 20150307712
    Abstract: An asphalt composition comprising aggregate, bitumen, sulphur and resin-based binder, wherein the resin-based binder comprises a thermoplastic hydrocarbon resin and a diluent. Methods of preparing asphalt compositions and asphalt pavements are also disclosed.
    Type: Application
    Filed: December 7, 2012
    Publication date: October 29, 2015
    Inventors: Guy Lode Magda Maria VERBIST, David STRICKLAND, Majid Jamshed CHUGHTAI, Sunil ASHTEKAR
  • Patent number: 9074099
    Abstract: The invention provides a bituminous composition comprising a bitumen in an amount ranging from 20 to 80% wt, a copolymer comprising one or more vinyl aromatic compounds and one or more conjugated dienes, in an amount of 0.1 to 7 % wt, and sulphur in an amount of 20 to 60% wt, all percentages based on the weight of bitumen, copolymer and sulphur. It further provides a process for making this composition and asphalt compositions comprising such bituminous composition.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: July 7, 2015
    Assignee: Shell Oil Company
    Inventors: Majid Jamshed Chughtai, Jacques Colange, Denis Lebas, David Strickland
  • Patent number: 9028602
    Abstract: The invention provides a bituminous composition comprising a bitumen in an amount ranging from 20 to 90% wt, a carboxylic additive in an amount of from 0.25 to 5% wt, and sulphur in an amount of 5 to 75% wt, all percentages based on the weight of bitumen, carboxylic additive and sulphur, wherein the carboxylic additive is selected from carboxylic acids, carboxylic esters and carboxylic anhydrides. It further provides a process for making this composition and asphalt compositions comprising such bituminous composition.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 12, 2015
    Assignee: Shell Oil Company
    Inventors: Majid Jamshed Chughtai, Anindya Kumar Ghosal, Michael David Lankshear, David Strickland
  • Publication number: 20150125205
    Abstract: An asphalt composition comprising aggregate, bitumen, sulphur and surfactant, wherein the surfactant is selected from cationic surfactants, amphoteric surfactants and mixtures thereof. Methods of preparing asphalt compositions and asphalt pavements are also disclosed.
    Type: Application
    Filed: December 7, 2012
    Publication date: May 7, 2015
    Inventors: David Strickland, Majid Jamshed Chughtai, Sunil Ashtekar
  • Publication number: 20140147205
    Abstract: The invention provides a bituminous composition comprising 20 to 80 wt % bitumen, 0.1 to 7 wt % of a copolymer formed from monomers including ethylene and glycidyl methacrylate or glycidyl acrylate, and 20 to 60 wt % sulphur, all weight percentages based on the weight of the bituminous composition. It further provides a process for making this composition and asphalt compositions comprising such bituminous composition.
    Type: Application
    Filed: April 5, 2012
    Publication date: May 29, 2014
    Inventors: David Strickland, Majid Jamshed Chughtai, Richard Walter May
  • Patent number: 8557034
    Abstract: A process for manufacturing asphalt is disclosed. The process comprises the steps of: (i) heating bitumen; (ii) heating aggregate; and (iii) mixing the hot bitumen with the hot aggregate in a mixing unit to form asphalt. From 10 to 200 wt % of sulphur, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii) and from 0.1 to 20 wt % of a compound of formula A, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii). R1 and R2 are independently chosen from C6-C30 alkyl or alkenyl.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: October 15, 2013
    Assignee: Shell Oil Company
    Inventors: Jacques Colange, David Strickland
  • Publication number: 20130210966
    Abstract: The invention provides a bituminous composition comprising a bitumen in an amount ranging from 20 to 80% wt, a copolymer comprising one or more vinyl aromatic compounds and one or more conjugated dienes, in an amount of 0.1 to 7 % wt, and sulphur in an amount of 20 to 60% wt, all percentages based on the weight of bitumen, copolymer and sulphur. It further provides a process for making this composition and asphalt compositions comprising such bituminous composition.
    Type: Application
    Filed: February 23, 2011
    Publication date: August 15, 2013
    Inventors: Majid Jamshed Chughtai, Jacques Colange, Denis Lebas, David Strickland
  • Patent number: 8361216
    Abstract: A method of making a sulfur-extended asphalt mixture with a minimum of hydrogen sulfide gas release into the atmosphere by using sulfur granules with specific physical properties and which are made by successively coating a starting sulfur seed particle with liquid sulfur that is solidified between coatings to thereby build up the a sulfur particle of a desired size. The sulfur granules are used to in the preparation of a sulfur, bitumen and aggregate mixture to provide the sulfur-extended asphalt.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: January 29, 2013
    Assignee: Shell Oil Company
    Inventors: Majid Jamshed Chughtai, Helen Jayne Davies, Richard Walter May, David Strickland
  • Publication number: 20130004662
    Abstract: The invention provides a bituminous composition comprising a bitumen in an amount ranging from 20 to 90% wt, a carboxylic additive in an amount of from 0.25 to 5% wt, and sulphur in an amount of 5 to 75% wt, all percentages based on the weight of bitumen, carboxylic additive and sulphur, wherein the carboxylic additive is selected from carboxylic acids, carboxylic esters and carboxylic anhydrides. It further provides a process for making this composition and asphalt compositions comprising such bituminous composition.
    Type: Application
    Filed: February 23, 2011
    Publication date: January 3, 2013
    Inventors: Majid Jamshed Chughtai, Anindya Kumar Ghosal, Michael David Lankshear, David Strickland
  • Publication number: 20120061863
    Abstract: An apparatus for molding at least one side of an ophthalmic diffractive lens. The apparatus includes a first mold, wherein the first mold includes at least a first portion made of plastic, and wherein the first portion includes a first pattern on a surface thereof, the first pattern configured to impart a diffractive optical pattern on a surface on the at lest one side of the ophthalmic diffractive lens molded using the first mold.
    Type: Application
    Filed: July 11, 2011
    Publication date: March 15, 2012
    Applicant: PIXELOPTICS, INC.
    Inventors: Bryan Cox, Youval Katzman, Yassin Turshani, Anita Trajkovska, Venkatramani Iyer, David Strickland
  • Publication number: 20110290151
    Abstract: A method of making a sulfur-extended asphalt mixture with a minimum of hydrogen sulfide gas release into the atmosphere by using sulfur granules with specific physical properties and which are made by successively coating a starting sulfur seed particle with liquid sulfur that is solidified between coatings to thereby build up the a sulfur particle of a desired size. The sulfur granules are used to in the preparation of a sulfur, bitumen and aggregate mixture to provide the sulfur-extended asphalt.
    Type: Application
    Filed: July 30, 2010
    Publication date: December 1, 2011
    Inventors: Majid Jamshed CHUGHTAI, Helen Jayne Davies, Richard Walter May, David Strickland
  • Publication number: 20110041729
    Abstract: A process for manufacturing asphalt is disclosed. The process comprises the steps of : (i) heating bitumen; (ii) heating aggregate; and (iii) mixing the hot bitumen with the hot aggregate in a mixing unit to form asphalt. From 10 to 200 wt % of sulphur, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii) and from 0.1 to 20 wt % of paraffin wax is added in at least one of the steps (i), (ii) or (iii).
    Type: Application
    Filed: April 1, 2009
    Publication date: February 24, 2011
    Inventors: Jacques Colange, David Strickland
  • Publication number: 20110041732
    Abstract: A process for manufacturing asphalt is disclosed. The process comprises the steps of: (i) heating bitumen; (ii) heating aggregate; and (iii) mixing the hot bitumen with the hot aggregate in a mixing unit to form asphalt. From 10 to 200 wt % of sulphur, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii) and from 0.1 to 20 wt % of a compound of formula A, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii). R1 and R2 are independently chosen from C6-C30 alkyl or alkenyl.
    Type: Application
    Filed: April 1, 2009
    Publication date: February 24, 2011
    Inventors: Jacques Colange, David Strickland
  • Patent number: 7511630
    Abstract: A floor display system, including a floor covering, an electronic display device associated with the floor covering, wherein the electronic display device is configurable to display electronically modifiable arbitrary content, a controller, and a sensing device coupled to the controller, wherein the brightness of an image displayed by the electronic display device is capable of being varied based on information received by the controller from the sensing device. The sensing device may include a proximity detector. The electronic display device may include a plurality of separate panels.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: March 31, 2009
    Assignee: Intellimat, Inc.
    Inventors: David Strickland, Scott C. Cleland, Ronald D. Blum
  • Publication number: 20070261796
    Abstract: An automatic bead seating assembly to automatically move a bead seating assembly or manifold into contact with a wheel or tire assembly and cause the bead to be seated. The assembly comprises an extendable and retractable seater arm attached at one end to a base, with a bead seater or manifold assembly attached or mounted at the other end. The bead seater or manifold assembly may comprises a reservoir filled with compressed air or other gas, and a hose or pipe for movement of the air or gas from the reservoir to a nozzle of an appropriate size and shape to fit a particular wheel or tire. The seater arm extends forward until the bead seater or manifold assembly comes into contact with the wheel or tire assembly, whereupon air or gas from the manifold reservoir is released, causing the tire bead to be seated. The seater arm then retracts.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 15, 2007
    Inventor: David Strickland
  • Publication number: 20060231212
    Abstract: An apparatus and method for simply and inexpensively positioning mounted automobile and truck tires for effective setting of a bead, with subsequent inflation in an efficient manner. In one exemplary embodiment, the apparatus is a wheel-like structure with an outer rim in the shape of a polygon, such as a circle, octagon, hexagon, or square. The outer rim supports a plurality of mounting brackets adapted to hold tires for inflation. Tires that have been mounted on wheel rims are placed on the mounting brackets, a bead is set by a blast of air, and an air inflation hose is connected to the tire. The wheel rotates, so that additional tires can be placed on subsequent mounting brackets, resulting in a series of tires being inflated continuously and simultaneously. When a tire is completely inflated, the hose is disconnected and the tire removed from the device for storage, shipping or further handling.
    Type: Application
    Filed: April 18, 2006
    Publication date: October 19, 2006
    Inventor: David Strickland
  • Publication number: 20030106714
    Abstract: The present invention utilizes a coiled tubing unit at the ocean floor to perform operations previously not possible, or performed in a less efficient manner from the surface of the ocean. The operations of the present invention involve, sub sea drilling, salvage operations, and sub sea pipeline cleanout.
    Type: Application
    Filed: December 12, 2001
    Publication date: June 12, 2003
    Inventors: Michael Lee Smith, David Strickland
  • Patent number: 6567657
    Abstract: A method and system for automatically adjusting charges to a pre-paid account in a telecommunications or distributed processing network following a failure in the network. After a service that is chargeable against the pre-paid account is initiated in the network, a failure in the network is detected. The failure prevents a charging node from receiving event data relating to the pre-paid account. After recovery from the failure, a message is sent to the charging node containing service status information. The charging node adjusts the account balance in accordance with the service status information.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: May 20, 2003
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Gerald Holly, Akilan Tiburtius, Arturo Vega, Hanh Duy Vo, Nadia Bishai, Jacques Bugnon, David Strickland
  • Patent number: 6101251
    Abstract: An apparatus and method are disclosed for playing an announcement to a calling party that is placing a call in an anonymous manner to prompt the calling party to respond in a manner which causes a switch to make the call identifiable by the called party. The apparatus is operable to play the announcement if the called party is a subscriber to anonymous call rejection and has activated the feature and if the calling party is calling in an anonymous mode. If the calling party does not respond within a specified time period the call is blocked. Specified responses include verbal responses as well as key entries on the calling party phone. A typical specified time period is five seconds.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 8, 2000
    Assignee: Ericsson Inc
    Inventor: David Strickland
  • Patent number: 5933487
    Abstract: A method and apparatus for improving call connection to one of a plurality of destination numbers on a calling list is disclosed. The method involves monitoring the inband signals between an interrogating mobile switching center and a remote node during call setup procedures. An inband monitoring device looks for terminating signals indicating that call setup to the remote nodes will not be completed. Upon detection of such a termination signal, the call setup procedure is immediately discontinued without waiting for expiration of a call answer timeout period.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: August 3, 1999
    Assignee: Ericsson Inc.
    Inventor: David Strickland