Patents by Inventor Bruce R. Walker

Bruce R. Walker 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).

  • Light emitting diode light source
    Patent number: 7789661
    Abstract: Light Emitting Diode Light Sources for Dental Curing are disclosed. Some embodiments of the invention include structures such as Light Emitting Diode Array(s), heat sink, heat dissipation, heat pipe, and control circuitry are disclosed.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: September 7, 2010
    Assignee: Koninklijke Philips Electronics N V
    Inventors: Calvin D. Ostler, Kevin D. Ostler, Bruce R. Walker, Marc C. Cimolino, Miles F. Elledge
  • Light emitting diode light source for curing dental composites
    Patent number: 7320593
    Abstract: Light Emitting Diode Light Sources for Dental Curing are disclosed. Some embodiments of the invention include structures such as Light Emitting Diode Array(s), heat sink, heat dissipation, heat pipe, and control circuitry are disclosed.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: January 22, 2008
    Assignee: TIR Systems Ltd.
    Inventors: Calvin D. Ostler, Kevin D. Ostler, Bruce R. Walker, Marc C. Cimolino, Miles F. Elledge
  • Light emitting diode light source for curing dental composites
    Publication number: 20010046652
    Abstract: Light Emitting Diode Light Sources for Dental Curing are disclosed. Some embodiments of the invention include structures such as Light Emitting Diode Array(s), heat sink, heat dissipation, heat pipe, and control circuitry are disclosed.
    Type: Application
    Filed: March 7, 2001
    Publication date: November 29, 2001
    Applicant: Ostler Scientific Internationsl, Inc.
    Inventors: Calvin D. Ostler, Kevin D. Ostler, Bruce R. Walker, Marc C. Cimolino, Miles F. Elledge
  • System for producing a pulsed, varied and modulated laser output
    Patent number: 6157661
    Abstract: A system and method are disclosed for providing a laser beam that is varied, such as being pulsed or modulated, rather than being a laser beam of constant intensity. Specific circuitry that includes timing and triggering means for pulsing a laser beam is disclosed, and methods and software for modulating a laser beam are disclosed. Pulsed and modulated laser beams have wide variety of applications, including curing polymeric materials such as dental composites. Modulated light from sources other than lasers may also be used for such curing.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: December 5, 2000
    Assignee: LaserPhysics, Inc.
    Inventors: Bruce R. Walker, Kevin D. Ostler
  • Portable refrigeration door open alarm apparatus
    Patent number: 5479152
    Abstract: A completely self-contained and portable alarm system that senses a condition in which a refrigerator or freezer door is not fully closed using a plurality of spring-tempered metallic sensor switches and which provides an audible tone from a piezoelectric transducer. By means of a selector switch, the alarm can occur either immediately upon opening the appliance door, after a predetermined delay has expired, or the alarm can be disabled by removing power from the electronic circuit. Compared to other refrigeration alarm systems this invention is not integral to the appliance itself; it senses only door-ajar conditions; is powered by common direct current means; and its mounting location is highly flexible. It can be easily installed by magnetic means on either side, or top of the appliance near the door by simply placing it where desired, accommodating a large number of new as well as older appliance models.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: December 26, 1995
    Inventors: Bruce R. Walker, Marc K. Uhrey