Patents by Inventor David J. Ludlow

David J. Ludlow 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).

  • Spa construction and installation system
    Patent number: 8881321
    Abstract: A system for easier manufacture and installation of a spa using a unitary base with molded integral electrical chaseways and with vertical support members.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: November 11, 2014
    Inventors: David J. Ludlow, Stephen M. Fleischer, Richard Alex Eddington
  • In-ground spa installation
    Patent number: 8869469
    Abstract: A system for providing an in-ground installation of a portable spa using a Spa Vault assembly.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: October 28, 2014
    Assignee: Bullfrog International, L.C.
    Inventors: David J. Ludlow, Marvin Hinckley Howell
  • Spas and bathing systems with upgradeable and interchangeable jet stations
    Patent number: 8661576
    Abstract: A bathing system with a molded shell has hollows in the shell. A canister installed in each hollow with jets mounted upon the front jet plate of the canister. The canister is of simple construction that is mounted in a hollow and is removable and interchangeable for easy upgrading and repair of the bathing system.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: March 4, 2014
    Inventors: David J. Ludlow, Alan L. Robins, Trent L. Taylor, Derrick P. Christman, Michael J. Adams, Stephen M. Fleischer, Richard Alex Eddington, Marvin H. Howell
  • IN-GROUND SPA INSTALLATION
    Publication number: 20130152297
    Abstract: A system for providing an in-ground installation of a portable spa using a Spa Vault assembly.
    Type: Application
    Filed: August 23, 2012
    Publication date: June 20, 2013
    Inventors: David J. Ludlow, Marvin Hinckley Howell
  • SPAS AND BATHING SYSTEMS WITH UPGRADEABLE AND INTERCHANGEABLE JET STATIONS
    Publication number: 20110225720
    Abstract: A bathing system with a molded shell has hollows in the shell. A canister installed in each hollow with jets mounted upon the front jet plate of the canister. The canister is of simple construction that is mounted in a hollow and is removable and interchangeable for easy upgrading and repair of the bathing system.
    Type: Application
    Filed: March 21, 2011
    Publication date: September 22, 2011
    Inventors: Stephen M. Fleischer, Richard Alex Eddington, Marvin H. Howell, David J. Ludlow, Alan L. Robins, Trent L. Taylor, Derrick P. Christman, Michael J. Adams
  • Spas and bathing systems with upgradeable and interchangeable jet stations
    Patent number: 7908684
    Abstract: A bathing system with a molded shell has hollows in the shell. A canister installed in each hollow with jets mounted upon the front jet plate of the canister. The canister is of simple construction that is mounted in a hollow and is removable and interchangeable for easy upgrading and repair of the bathing system.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: March 22, 2011
    Assignee: Bullfrog International, L.C.
    Inventor: David J. Ludlow
  • SPA CONSTRUCTION AND INSTALLATION SYSTEM
    Publication number: 20090172873
    Abstract: A system for easier manufacture and installation of a spa using a unitary base with molded integral electrical chaseways and with vertical support members.
    Type: Application
    Filed: November 5, 2008
    Publication date: July 9, 2009
    Inventors: David J. Ludlow, Stephen M. Fleischer, Bronson Best Smith, Trent Loren Taylor
  • Top mounted biological filtration system for an aquarium
    Patent number: 5474673
    Abstract: A wet/dry filter system that is mounted on the top of an aquarium allows flexible flow control to and between the wet section and the dry section.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: December 12, 1995
    Inventor: David J. Ludlow