Patents by Inventor David Lawrence Johnson

David Lawrence Johnson 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: 11931220
    Abstract: Wax-based compositions for making barrier layers used in oral treatment devices are thermally stable when formed into a flat sheet or three-dimensional article to a temperature of at least 45° C. and are plastically deformable at room temperature (25° C.). The wax-based compositions include a wax fraction homogeneously blended with a polymer fraction. The wax fraction includes at least one wax and the polymer fraction includes at least one polymer selected such that, when the at least one wax and at least one polymer are homogeneously blended together, they yield a wax-based composition having the desired properties of thermal stability and plastic deformability. Barrier layers and oral treatment devices made from such wax-based compositions are dimensionally stable to a temperature of at least 40° C. without external support and can be plastically deformed in a user's mouth to become at least partially customized to the size and shape of user's unique dentition.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: March 19, 2024
    Assignee: ULTRADENT PRODUCTS, INC.
    Inventors: Steven B. Johnson, David Lawrence Margetts, Barry Lee Hobson, Jonathan D. Scoville, Neil T. Jessop, Peter M. Allred, Dan E. Fischer
  • Patent number: 8220682
    Abstract: The hunting call holder 100 comprises a pocket apron 110 comprising heavy cloth sewn together in layers 161, 163, and 165 with different levels 162, 164, and 166; with a sleeve 120 wherein a support rod 800 is placed in the sleeve 120 to prevent the collapse of the hunting call holder 100 when the hunting call holder 100 is loaded with calls and gear; and strap closers 140 are attached at opposing ends of the hunting call holder 100 for attaching the hunting call holder 100 with a structure 900 of a pop-up blind.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: July 17, 2012
    Inventor: David Lawrence Johnson
  • Patent number: 8083028
    Abstract: A tray 100 for a tripod deer stand comprising two components 110, 111 wherein the first component 110 includes an inside width 140 that is greater than the second component 111 outside width 143 such that the second component 111 may slide within the first component 110, and wherein the first component 110 is adjusted in relation to the second component 111 to multiple desired overall tray widths 154 between a maximum width FIG. 2C and a minimum width FIG. 2A dependent upon the lengths of the first component 110 and the second component 111. At least two support brackets 160 and hardware 180 are included for securing the first component 110 with the second component 111 for a desired width, for securing the first and second component 110, 111 with the at least two support brackets 160, and for securing the support brackets 160 with the tripod deer stand.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: December 27, 2011
    Inventor: David Lawrence Johnson
  • Publication number: 20100206918
    Abstract: The hunting call holder 100 comprises a pocket apron 110 comprising heavy cloth sewn together in layers 161, 163, and 165 with different levels 162, 164, and 166; with a sleeve 120 wherein a support rod 800 is placed in the sleeve 120 to prevent the collapse of the hunting call holder 100 when the hunting call holder 100 is loaded with calls and gear; and strap closers 140 are attached at opposing ends of the hunting call holder 100 for attaching the hunting call holder 100 with a structure 900 of a pop-up blind.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 19, 2010
    Inventor: David Lawrence Johnson
  • Patent number: 7681850
    Abstract: A tree ladder stand tray 10 including a tray area 100 and tray supports 110, 120, 130, 140 on each of four sides with a bottom tray 150 attached to the four tray supports within the area formed by the tray supports, such that the supports form an edge to help prevent articles from falling off the tray area; and a bracket 160 including a forward and rear brace 170, 180 attached to the tray area such that the distance between the forward brace and the rear brace is such that the bracket will fit under a tree ladder stand 102 and the tree ladder stand tray may be attached with the tree ladder stand. The tree ladder stand tray may include a second tray area 200 with the tray areas on each side of the tree ladder stand. The tree ladder stand tray may be in combination with a tree ladder stand.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: March 23, 2010
    Inventor: David Lawrence Johnson
  • Publication number: 20090308689
    Abstract: A tray 100 for a tripod deer stand comprising two components 110, 111 wherein the first component 110 includes an inside width 140 that is greater than the second component 111 outside width 143 such that the second component 111 may slide within the first component 110, and wherein the first component 110 is adjusted in relation to the second component 111 to multiple desired overall tray widths 154 between a maximum width FIG. 2C and a minimum width FIG. 2A dependent upon the lengths of the first component 110 and the second component 111. At least two support brackets 160 and hardware 180 are included for securing the first component 110 with the second component 111 for a desired width, for securing the first and second component 110, 111 with the at least two support brackets 160, and for securing the support brackets 160 with the tripod deer stand.
    Type: Application
    Filed: June 17, 2008
    Publication date: December 17, 2009
    Inventor: David Lawrence Johnson
  • Publication number: 20080302931
    Abstract: A tree ladder stand tray 10 including a tray area 100 and tray supports 110, 120, 130, 140 on each of four sides with a bottom tray 150 attached to the four tray supports within the area formed by the tray supports, such that the supports form an edge to help prevent articles from falling off the tray area; and a bracket 160 including a forward and rear brace 170, 180 attached to the tray area such that the distance between the forward brace and the rear brace is such that the bracket will fit under a tree ladder stand 102 and the tree ladder stand tray may be attached with the tree ladder stand. The tree ladder stand tray may include a second tray area 200 with the tray areas on each side of the tree ladder stand. The tree ladder stand tray may be in combination with a tree ladder stand.
    Type: Application
    Filed: June 6, 2007
    Publication date: December 11, 2008
    Inventor: David Lawrence Johnson