Patents by Inventor Joseph R. Rellick

Joseph R. Rellick 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).

  • Method for fabricating multilayer circuits
    Patent number: 4806188
    Abstract: The invention is directed to a method for fabricating multilayer circuits on rigid substrates using conventional dielectric green tape and thick film conductive pastes while maintaining excellent X-Y dimensional stability.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: February 21, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Method for fabricating multilayer circuits
    Patent number: 4799984
    Abstract: The invention is directed to a method for fabricating multilayer circuits on rigid ceramic substrates using conventional dielectric green tape and thick film conductive pastes in which the number of firing steps is substantially reduced while maintaining excellent X-Y dimensional stability.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: January 24, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Dielectric compositions and method of forming a multilayer interconnection using same
    Patent number: 4655864
    Abstract: A casting composition for making dielectric green tapes comprising a dispersion of finely divided solids of (a) a noncrystallizable glass and (b) a mixture of refractory oxides in a solution of (c) organic polymer, which is readily depolymerizable at 825.degree.-1025.degree. C. in a nonoxidizing atmosphere, dissolved in (d) volatile nonaqueous solvent.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: April 7, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Conductive element metallized with a thick film gold composition
    Patent number: 4547436
    Abstract: A conductive element having a metallization paste screen printed on its surface is made using a paste containing 65 to 97% by weight gold and 3 to 25% by weight cadmium/antimony alloy dispersed in an inert liquid vehicle.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: October 15, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Conductive element metallized with a thick film silver composition
    Patent number: 4544611
    Abstract: A conductive element having a metallization paste screen printed on its surface is made using a paste containing 65 to 95% by weight silver and 5 to 35% by weight cadmium/antimony alloy dispersed in a liquid vehicle.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: October 1, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Thick film gold metallization composition
    Patent number: 4466830
    Abstract: Paste composition for electrical terminal contact metallization containing 65 to 97% by weight gold and 3 to 25% by weight cadmium/antimony alloy dispersed in an inert liquid vehicle.
    Type: Grant
    Filed: November 19, 1982
    Date of Patent: August 21, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Thick film silver metallization composition
    Patent number: 4462827
    Abstract: Paste composition for metal surface metallization containing 65 to 95% by weight silver and 5 to 35% by weight cadmium/antimony alloy dispersed in a liquid vehicle.
    Type: Grant
    Filed: November 19, 1982
    Date of Patent: July 31, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Silicon solar cell N-region metallizations comprising a nickel-antimony alloy
    Patent number: 4361718
    Abstract: The n-type region of a silicon solar cell is metallized with a nickel-antimony alloy to provide an external contact.
    Type: Grant
    Filed: November 9, 1981
    Date of Patent: November 30, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sanford M. Marcus, Joseph R. Rellick
  • Solar cell metallizations comprising a nickel-antimony alloy
    Patent number: 4342795
    Abstract: A silicon solar cell is metallized with a nickel-antimony alloy to provide external contacts.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: August 3, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sanford M. Marcus, Joseph R. Rellick
  • Mixed oxide bonded copper conductor compositions
    Patent number: 4323483
    Abstract: Thick film copper conductor compositions useful for forming microwave conduit conductors are disclosed. The compositions contain copper, copper oxide, lead oxide and bismuth oxide dispersed in an inert liquid vehicle.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: April 6, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph R. Rellick
  • Air-fireable conductor composition
    Patent number: 4255291
    Abstract: Air-fireable thick film conductor compositions are provided. The conductor composition is a paste containing (1) an inorganic powder made from an intermetallic phase copper-aluminum powder, aluminum powder and a glass frit and (2) an inert organic liquid vehicle.
    Type: Grant
    Filed: June 21, 1979
    Date of Patent: March 10, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Christopher R. S. Needes, Joseph R. Rellick