Patents by Inventor Martin H. Fox

Martin H. Fox 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).

  • Electrical insulation material
    Patent number: 9754701
    Abstract: Provided is an article containing non-cellulosic nonwoven fabric layer between two non-cellulosic nonwoven paper layers wherein one or both of the nonwoven paper and nonwoven fabric are electrically insulating. At least some embodiments are flame retardant.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: September 5, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Robert H. Turpin, David S. Stankes, Martin H. Fox, Mitchell T. Huang
  • ELECTRICAL INSULATION MATERIAL AND TRANSFORMER
    Publication number: 20160343465
    Abstract: An article comprises an inorganic filler, fully hydrolyzed polyvinyl alcohol fibers, a polymer binder, and high surface area fibers. The article can be formed as an electrically insulating paper for electrical equipment, such as a liquid filled transformer, which can thereby be substantially cellulose free.
    Type: Application
    Filed: January 27, 2015
    Publication date: November 24, 2016
    Inventors: Robert H. Turpin, Rhesa M. Browning, David V. Mahoney, Mitchell T. Huang, David S. Stankes, Martin H. Fox
  • Electrical insulation material
    Patent number: 9437348
    Abstract: Provided in at least one embodiment is a nonwoven paper layer directly fused on one or both sides with a nonwoven fabric layer wherein one or both of the nonwoven paper and nonwoven fabric are electrically insulating.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: September 6, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Robert H. Turpin, David S. Stankes, Martin H. Fox, Mitchell T. Huang
  • ELECTRICAL INSULATION MATERIAL
    Publication number: 20150118464
    Abstract: Provided is an article containing non-cellulosic nonwoven fabric layer between two non-cellulosic nonwoven paper layers wherein one or both of the nonwoven paper and nonwoven fabric are electrically insulating. At least some embodiments are flame retardant.
    Type: Application
    Filed: March 11, 2013
    Publication date: April 30, 2015
    Inventors: Robert H. Turpin, David S. Stankes, Martin H. Fox, Mitchell T. Huang
  • ELECTRICAL INSULATION MATERIAL
    Publication number: 20120156956
    Abstract: Provided in at least one embodiment is a nonwoven paper layer directly fused on one or both sides with a nonwoven fabric layer wherein one or both of the nonwoven paper and nonwoven fabric are electrically insulating.
    Type: Application
    Filed: March 23, 2011
    Publication date: June 21, 2012
    Inventors: Robert H. Turpin, David S. Stankes, Martin H. Fox, Mitchell T. Huang
  • High temperature insulation for liquid-filled transformers
    Patent number: 5368929
    Abstract: A high temperature insulation for liquid-filled transformers. This invention is a composite sheet material composed of a substrate saturated with a thermally stable polymeric resin that provides a micro-porous structure. This structure allows dielectric fluid to saturate the electrical insulation material. The insulation materials have a low moisture absorption, and do not generate water when aged during the life of the transformer. The invention improves transformer life expectancy with a cost effective alternate electrical sheet insulation material. This material has better heat aged electrical properties than cellulose, which is presently the most common insulator for liquid filled transformers.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: November 29, 1994
    Inventors: Paul E. Parker, Martin H. Fox, Robert H. Turpin, Thomas M. Golner