Patents by Inventor Dennis Mark

Dennis Mark 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: 9346996
    Abstract: An oil well cementing product comprising DTPA-coated synthetic calcined gypsum, at least one accelerator, at least one retarder, at least one plasticizer and limestone is provided. Also provided are methods for cementing oil wells with mixtures comprising DTPA-coated synthetic calcined gypsum, at least one accelerator, at least one retarder, at least one plasticizer and limestone.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: May 24, 2016
    Assignee: UNITED STATES GYPSUM COMPANY
    Inventors: Dennis Mark Lettkeman, John Wesley Wilson, Doug Blackburn, Brian K. Ball, Raymond A. Kaligian, Mike L. Cloud
  • Publication number: 20160107931
    Abstract: DTPA-coated synthetic calcined gypsum is provided with alpha-like properties and obtained by spray-coating the synthetic caclined gypsum with DTPA. Cementitious compositions comprising DTPA-coated synthetic calcined gypsum and low water demand are provided as well. Methods for controlling an open time of a cementitious slurry by increasing or decreasing the amount of DTPA-coated synthetic calcined gypsum in the slurry are provided as well.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 21, 2016
    Inventors: Dennis Mark Lettkeman, John Wesley Wilson, Mike L. Cloud, Brian K. Ball, Raymond A. Kaligian, Doug Blackburn
  • Publication number: 20150315081
    Abstract: An ultra-light, pourable, self-drying cementitious product with improved density control and ultra-low water demand is provided. Compositions and methods for making the products are provided as well, including compositions and methods with ultra-low water demand.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 5, 2015
    Applicant: United States Gypsum Company
    Inventors: Dennis Mark Lettkeman, John Wesley Wilson, William Kelly Bedwell, Gary Franklin Miller, Raymond A. Kaligian
  • Patent number: 8857098
    Abstract: Sport fishing for lobsters by divers is done with a hand held net. Lobsters in a net try to escape through the large net opening by flipping their tails. It is accordingly an object of the invention to trap a lobster and prevent it from escaping. The Mark I lobster net closes by flipping a lever with the thumb, preventing the lobster from escape. The overall density of the net is greater than that of sea water. If the net is dropped, it will fall to the bottom and not drift off. The handle is painted a florescent yellow so that it can be seen on the ocean floor.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: October 14, 2014
    Inventor: James Dennis Marks
  • Publication number: 20130091755
    Abstract: Sport fishing for lobsters by divers is done with a hand held net. Lobsters in a net try to escape through the large net opening by flipping their tails. It is accordingly an object of the invention to trap a lobster and prevent it from escaping. The Mark I lobster net closes by flipping a lever with the thumb, preventing the lobster from escape. The overall density of the net is greater than that of sea water. If the net is dropped, it will fall to the bottom and not drift off. The handle is painted a florescent yellow so that it can be seen on the ocean floor.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Inventor: James Dennis Marks
  • Publication number: 20090305205
    Abstract: Programmable potty training device attachable to child, reminding Toddler to not forget potty time after meals. Accordingly, persuading child to go to restroom. Device attached to child activates device in restroom relaying charismatic character teaching sanitary proper potty training techniques.
    Type: Application
    Filed: April 3, 2009
    Publication date: December 10, 2009
    Inventor: Dennis Mark Hicks
  • Patent number: 7374611
    Abstract: In conjunction with water, a mixture can be used to prepare a sprayable slurry that hydrates to form a machinable plaster composition. The mixture includes from about 80% to about 98% by weight calcium sulfate hemihydrate, from about 1% to about 5% by weight adhesive binder for adhering said plaster mixture to a substrate and from about 0.001% to about 10% of a polysaccharide. The mixture is made into a slurry by the addition of from 10% to about 50 weight water based on the weight of the mixture.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: May 20, 2008
    Assignee: United States Gypsum Company
    Inventors: Dennis Mark Lettkeman, Raymond A. Kaligian, II, Eldon L. Whiteside, Salvatore C. Immordino, Jr.
  • Patent number: 7338990
    Abstract: A mixture is used in conjunction with water is used for preparing a slurry that hydrates to form an exterior gypsum cement. The mixture includes 30-70% by weight hydraulic cement, 30-70% by weight calcined gypsum and 0.05-2.5% polycarboxylate. When the mixture is added to water less than 40 weight % based on the weight of the mixture, a slurry is formed that expands very little while it cures.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: March 4, 2008
    Assignee: United States Gypsum Company
    Inventors: Dennis Mark Lettkeman, Raymond A. Kaligian, II, William K. Bedwell, Eldon L. Whiteside
  • Publication number: 20070158506
    Abstract: A bar clamp assembly configured to be secured to a structure through a fastener includes a bar clamp, a securing base, and a fastener retention member. The securing base may be integrally formed with the bar clamp, and is configured to receive and retain the fastener. The fastener retention member is within or on the securing base, and is configured to secure the fastener in the securing base. The bar clamp assembly may also include a plurality of braces, clips and other support structures between the bar clamp and the securing base in order to provide a more robust assembly.
    Type: Application
    Filed: March 14, 2007
    Publication date: July 12, 2007
    Inventors: Jason Trotter, Robert Dutzi, Dennis Mark, Jeremy Beck
  • Publication number: 20070119017
    Abstract: A grommet connector includes a first end portion and a second end portion with a barrier therebetween. The first end portion is adapted for insertion into a grommet, and the second end portion is adapted for connecting to another part, such as a nut or washer to form a subassembly of the grommet and the other part.
    Type: Application
    Filed: January 25, 2007
    Publication date: May 31, 2007
    Inventors: Jason Trotter, Robert Dutzi, Dennis Mark, Jeremy Beck
  • Publication number: 20070120022
    Abstract: A bar clamp assembly configured to be secured to a structure through a fastener includes a bar clamp, a securing base, and a fastener retention member. The securing base may be integrally formed with the bar clamp, and is configured to receive and retain the fastener. The fastener retention member is within or on the securing base, and is configured to secure the fastener in the securing base. The bar clamp assembly may also include a plurality of braces, clips and other support structures between the bar clamp and the securing base in order to provide a more robust assembly.
    Type: Application
    Filed: August 2, 2006
    Publication date: May 31, 2007
    Inventors: Jason Trotter, Robert Dutzi, Dennis Mark, Jeremy Beck
  • Publication number: 20070045978
    Abstract: A roll stabilizer for a vehicle includes a resilient member operatively connected between a movable end and a fixed end, and structure for activating and deactivating operation of the stabilizer by affecting compression of the resilient member.
    Type: Application
    Filed: August 14, 2006
    Publication date: March 1, 2007
    Inventors: Jeremy Beck, Jason Trotter, Dennis Mark, Robert Dutzi, Eric Jipp
  • Publication number: 20060248681
    Abstract: A grommet connector includes a first end portion and a second end portion with a barrier therebetween. The first end portion is adapted for insertion into a grommet, and the second end portion is adapted for connecting to another part, such as a nut or washer to form a subassembly of the grommet and the other part.
    Type: Application
    Filed: July 11, 2006
    Publication date: November 9, 2006
    Inventors: Jason Trotter, Robert Dutzi, Dennis Mark, Jeremy Beck
  • Patent number: 7056964
    Abstract: A composition is disclosed for a mixture to be used in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound. The mixture includes from about 50% to about 98% by weight calcium sulfate hemihydrate, having at least 25% of the calcium sulfate hemihydrate in the beta-calcined form. A polycarboxylate dispersant is included in the mixture in amounts from about 0.2% to about 10% by weight. The mixture also includes 0.05–50% by weight enhancing component. When combined with recommended amounts of water, a slurry is formed that is useful as a flooring composition.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: June 6, 2006
    Assignee: United States Gypsum Company
    Inventors: Dennis Mark Lettkeman, Raymond A. Kaligian, II, Eldon L. Whiteside, William K. Bedwell, Sharon Meiseman
  • Publication number: 20050194199
    Abstract: The present invention provides a handlebar tilting apparatus having upper and lower pivotally attached brackets, a lever, and appropriate connectors to fasten the brackets and lever to each other in accordance with the present invention. In the embodiment shown and described herein, the brackets each adopt a generally U-shaped configuration with opposing side members and a transition member extending therebetween and integral therewith. The lower bracket is stationary and is attached to the steering column of a vehicle using a handlebar for steering. The upper bracket is attached to the handlebar of the vehicle. The lever is pivotally attached to the upper bracket by a lever pin and supports a latch pin that selectively engages notches disposed in the lower bracket.
    Type: Application
    Filed: March 2, 2004
    Publication date: September 8, 2005
    Inventors: Dennis Marks, John Lind
  • Publication number: 20050051974
    Abstract: A ball socket ring seal for use with a ball joint assembly eliminates the need for a boot or bellows to protect the ball joint against the environment. The ball socket ring seal of the invention is positioned between the ball and the socket at the point of contact between the ball and socket. The ball socket ring seal not only provides a seal against the environment, it further functions as a wiper for the ball during articulation of the ball stud. The ball socket ring seal of the present invention reduces the weight and complexity of the ball joint assembly through the elimination of several parts, including the known boots or bellows, retainer rings, bands and clips.
    Type: Application
    Filed: April 23, 2004
    Publication date: March 10, 2005
    Inventors: Kenneth Dobson, Robert Dutzi, Dennis Mark
  • Publication number: 20020175325
    Abstract: The invention is a semiconductor optical device and a method of manufacture. The device includes a first waveguide having an edge, and a second waveguide adjacent to at least a portion of the first waveguide including the edge so that light is coupled from the first to the second waveguide. The second waveguide has a modal index which is essentially constant at least at the edge of the first waveguide. The method includes forming at least the second waveguide by Selective Area Growth (SAG) using oxide pads of a particular geometry to achieve the essentially constant modal index. In one embodiment, the device is an expanded beam laser with an expander portion which is less than 300 microns.
    Type: Application
    Filed: April 28, 2000
    Publication date: November 28, 2002
    Inventors: Muhammad Ashraful Alam, Julie Eng, Mark S. Hybertsen, John Evan Johnson, Leonard Jan-Peter Ketelsen, Roosevlet People, Janice People, Dennis Mark Romero
  • Patent number: 6306670
    Abstract: A system for flipping a semiconductor workpiece on its thin edge for microscope inspection of a workpiece facet is disclosed. The system has a holding device attached to a handling block. The holding device picks a workpiece by one of its thin edges. The edge of the workpiece may be attached to the holding device by vacuum. Then an operator rotates the handling block ninety degrees, which in turn rotates the holding device and workpiece ninety degrees. After rotation, one of the workpiece facets faces upward and perpendicular to the microscope for proper inspection of the facet.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: October 23, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Joseph Michael Freund, George John Przybylek, Dennis Mark Romero, John W. Stayt
  • Patent number: 6290805
    Abstract: A system is provided for removing large semiconductor work pieces from an adhesive film. A pick and place apparatus is provided with a collet bar with elongated sides and opposed ends. A channel extends into a cavity on a lower surface of the collet bar. The channel receives a vacuum. The collet bar is angled from a longitudinal axis of the larger work piece to be removed. The work piece may be aligned with a cylindrical roller located under the adhesive film. The angle is chosen to extend the bar across a majority of the width of the work piece. By lowering the collet bar, a first end contacts the work piece, which may be tilted on the roller. Further lowering of the collet bar tilts the semiconductor work piece up into the same plane as the lower surface of the collet bar.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: September 18, 2001
    Assignee: Agere Systems Optoelectronics Guardian Corp.
    Inventors: Joseph Michael Freund, George John Przybylek, Dennis Mark Romero
  • Patent number: 6277234
    Abstract: A demounting apparatus is described which releases semiconductor work pieces from an adhesive support structure. The demounting apparatus includes a conduit with a pair of opposed openings. A support structure is placed over one of the openings with a work piece mounted on a lower surface thereof. A vacuum is exerted on the conduit through a constricted outlet, thereby creating a pressure differential. The lower pressure within the demounting apparatus causes the support structure to elastically deform, thereby reducing its adherence on the work piece. The work piece is dislodged from the support structure and caught by a cushion positioned in the other opening. The cushion is pushed inwardly by the pressure differential. Other structures for releasing the work piece are also disclosed.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: August 21, 2001
    Assignee: Lucent Technologies, Inc.
    Inventors: Joseph Michael Freund, George John Przybylek, Dennis Mark Romero