Patents by Inventor David Bushnell

David Bushnell 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: 10158033
    Abstract: An optoelectronic device has a layered construction, comprising a base layer, a first conductive layer, a photoactive layer and a second conductive layer. Plural separation channels extending through the photoactive layer and the first conductive layer separate the photoactive layer into photoactive regions, and insulator material extends through the respective separation channels to the base layer. Between adjacent photoactive regions, electrical connectors extend inside the lateral extent of the insulator material between a surface of a second electrode that is in electrical contact with one photoactive region to an opposing surface of a first electrode that is in electrical contact with the other photoactive region. By forming the electrical connectors extend inside the lateral extent of the insulator material, the overall size of the connection is minimized.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: December 18, 2018
    Assignee: OXFORD PHOTOVOLTAICS LIMITED
    Inventors: Terence Alan Reid, David Bushnell, Jim Watts
  • Publication number: 20170005211
    Abstract: An optoelectronic device has a layered construction, comprising a base layer, a first conductive layer, a photoactive layer and a second conductive layer. Plural separation channels extending through the photoactive layer and the first conductive layer separate the photoactive layer into photoactive regions, and insulator material extends through the respective separation channels to the base layer. Between adjacent photoactive regions, electrical connectors extend inside the lateral extent of the insulator material between a surface of a second electrode that is in electrical contact with one photoactive region to an opposing surface of a first electrode that is in electrical contact with the other photoactive region. By forming the electrical connectors extend inside the lateral extent of the insulator material, the overall size of the connection is minimised.
    Type: Application
    Filed: December 19, 2014
    Publication date: January 5, 2017
    Applicant: OXFORD PHOTOVOLTAICS LIMITED
    Inventors: Terence Alan REID, David BUSHNELL, Jim WATTS
  • Patent number: 8089147
    Abstract: An insulated metal substrate composite has a patterned conductive layer on one surface and receives one or more electrodes of MOSFETs or other die on the patterned segments which lead to the edge of the IMS. The outer periphery of the IMS is cupped or bent to form a shallow can with two or more die fixed to and thermally coupled to the flat web of the can while electrodes on the die surfaces thermally coupled to the web of the can lead to terminals on the rim of the can which are coplanar with the bottom surfaces of the die. The electrodes can be externally or internally connected to form a half bridge circuit.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: January 3, 2012
    Assignee: International Rectifier Corporation
    Inventors: Mark Pavier, David Bushnell
  • Publication number: 20070096274
    Abstract: An insulated metal substrate composite has a patterned conductive layer on one surface and receives one or more electrodes of MOSFETs or other die on the patterned segments which lead to the edge of the IMS. The outer periphery of the IMS is cupped or bent to form a shallow can with two or more die fixed to and thermally coupled to the flat web of the can while electrodes on the die surfaces thermally coupled to the web of the can lead to terminals on the rim of the can which are coplanar with the bottom surfaces of the die. The electrodes can be externally or internally connected to form a half bridge circuit.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 3, 2007
    Inventors: Mark Pavier, David Bushnell