Patents by Inventor Mark Markovitz

Mark Markovitz 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: 4975319
    Abstract: Curable compositions containing a reaction product of at least one bisphenol polyglycidyl ether, at least one epoxidized novolak and at least one brominated bisphenol, in combination with a polyphenylene ether and further components including specific catalysts and hardeners, may be used in the preparation of laminates useful as printed circuit boards and having excellent physical and electrical properties.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: December 4, 1990
    Assignee: General Electric Company
    Inventors: Erik W. Walles, John H. Lupinski, Mark Markovitz, Robert E. Colborn, James R. Presley, Michael J. Davis, Michael G. Minnick, Steven J. Kubisen, Jr., John E. Hallgren, Donald A. Bolon, Victoria J. Eddy, Patricia C. Irwin
  • Patent number: 4906711
    Abstract: The viscosities of solventless compositions of epoxy resins containing 1,2 epoxy groups and having at least two epoxide groups per molecule and effective amounts of hardener are markedly reduced whereby they are useful for vacuum-pressure impregnation, pre-impregnation electrical insulating material and structural composite applications by addition of a reactive diluent comprising an aromatic vinyl monomer.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: March 6, 1990
    Assignee: General Electric Company
    Inventor: Mark Markovitz
  • Patent number: 4853423
    Abstract: Curable compositions containing a reaction product of at least one bisphenol polyglycidyl ether, at least one epoxidized novolak and at least one brominated bisphenol, in combination with a polyphenylene ether and further components including specific catalysts and hardeners, may be used in the preparation of laminates useful as printed circuit boards and having excellent physical and electrical properties.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: August 1, 1989
    Assignee: General Electric Company
    Inventors: Erik W. Walles, John H. Lupinski, Mark Markovitz, Robert E. Colborn, James R. Presley, Michael J. Davis, Michael G. Minnick, Steven J. Kubisen, Jr., John E. Hallgren, Donald A. Bolon, Victoria J. Eddy, Patricia C. Irwin
  • Patent number: 4760296
    Abstract: Resinous compositions used as electric insulation have unique corona-resistance increased from 10- to 100-fold or more by the addition of organoaluminate, organosilicate or fine alumina or silica of critical particle size, and dynamoelectric machines and transformers incorporating coils made of wire strands coated with these novel compositions consequently have substantially increased service lives.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: July 26, 1988
    Assignee: General Electric Company
    Inventors: Don R. Johnston, Mark Markovitz
  • Patent number: 4692499
    Abstract: A thermosetting resin composition of an epoxy resin mixture of 1,2 epoxy resin having at least two epoxide groups per molecule and a polyglycol diepoxide having viscosity of 2,000-5,000 centipoises at 25.degree. C. and in addition small but effective amounts of both a catalytic hardener and an accelerator has special utility in the production of composite molded bodies of electrical insulation having thermoplastic shells because of its unique combination of properties including thermal stability, thermal-cycling crack resistance, high impact strength, toughness, room-temperature curability and bondability to both thermoplastic and metallic surfaces, and because it does not stress crack thermoplastic shells to which it is bonded in curing.
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: September 8, 1987
    Assignee: General Electric Company
    Inventors: Kevork A. Torossian, Mark Markovitz, Frederick E. Cox
  • Patent number: 4656090
    Abstract: The viscosities of solventless compositions of epoxy resins containing 1, 2 epoxy groups and having at least two epoxide groups per molecule and effective amounts of catalytic hardener and phenolic accelerator are dramatically reduced to make them useful for vacuum-pressure impregnation and also for pre-impregnated insulating material applications by addition of 3-33% of reactive diluent such as styrene.
    Type: Grant
    Filed: February 25, 1986
    Date of Patent: April 7, 1987
    Assignee: General Electric Company
    Inventor: Mark Markovitz
  • Patent number: 4631230
    Abstract: A thermosetting resin composition of an epoxy resin mixture of 1,2 epoxy resin having at least two epoxide groups per molecule and a polyglycol diepoxide having viscosity of 2,000-5,000 centipoises at 25.degree. C. and in addition small but effective amounts of both a catalytic hardener and an accelerator has special utility in the production of composite molded bodies of electrical insulation having thermoplastic shells because of its unique combination of properties including thermal stability, thermal-cycling crack resistance, high impact strength, toughness, room-temperature curability and bondability to both thermoplastic and metallic surfaces, and because it does not stress crack thermoplastic shells to which it is bonded in curing.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: December 23, 1986
    Assignee: General Electric Company
    Inventors: Kevork A. Torossian, Mark Markovitz, Frederick E. Cox
  • Patent number: 4605581
    Abstract: A carbon current collection brush having improved wear characteristics and exhibiting a relatively low coefficient of friction at its sliding contact surface (e.g., with a commutator or slip ring) is made by impregnating a brush blank with a solution containing an organometallic compound and an organic resin. The thereby impregnated brush blank is then cured to remove volatiles and retain approximately one to nine percent, by weight, of the organometallic compound and the organic resin in the brush blank.
    Type: Grant
    Filed: August 20, 1985
    Date of Patent: August 12, 1986
    Assignee: General Electric Company
    Inventors: Robert W. Stevens, Mark Markovitz
  • Patent number: 4603182
    Abstract: The viscosities of solventless compositions of epoxy resins containing 1, 2 epoxy groups and having at least two epoxide groups per molecule and effective amounts of catalytic hardener and phenolic accelerator are dramatically reduced to make them useful for vacuum-pressure impregnation and also for pre-impregnated insulating material applications by addition of 3-33% of reactive diluent such as styrene.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: July 29, 1986
    Assignee: General Electric Company
    Inventor: Mark Markovitz