Patents by Inventor Stephen A. Milkovich

Stephen A. Milkovich 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).

  • Green sheets of controlled microporosity and method of producing same
    Patent number: 6319343
    Abstract: Ceramic green sheets of controlled microporosity and method of making same have been provided. Controlled microporosity is achieved by including certain ionic species in the ceramic composition, particularly boron, phosphorus and copper oxide.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: November 20, 2001
    Assignee: International Business Machines Corporation
    Inventors: Cynthia N. Felisberto, Stephen A. Milkovich, Robert Wolff Nufer
  • Green sheets of controlled microporosity and method of producing same
    Patent number: 5413842
    Abstract: Ceramic green sheets of controlled microporosity and method of making same have been provided. Controlled microporosity is achieved by including certain ionic species in the ceramic composition, particularly boron, phosphorus and copper oxide.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: May 9, 1995
    Assignee: International Business Machines Corporation
    Inventors: Cynthia N. Felisberto, Stephen A. Milkovich, Robert W. Nufer
  • Continuous air bearing vapor stabilization system and method
    Patent number: 5290504
    Abstract: An in situ stabilizing tool provides a stress relieved, ceramic green sheet for green sheet screened stability. A green sheet stablilization system uses air bearings as a means of conveying a continuous ceramic green sheet web in a frictionless and stress free state. Solvent vapor stabilization of green sheets in a continuous mode adjusts solvent concentration in the air bearing using a solvent bubbler. Solvent vapor is generated from a group of solvents (e.g. hydrocarbons, water, etc.) that can be vaporized and used to solvent plasticize the ceramic green sheets to achieve stress relaxation. Take up loops and sensors adjust for longitudinal shrinkage during the green sheet relaxation process.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: March 1, 1994
    Assignee: International Business Machines Corporation
    Inventors: Stephen A. Milkovich, Robert W. Nufer
  • Method of fabricating an improved multi-layer ceramic substrate
    Patent number: 4336088
    Abstract: A method of fabricating an improved multi-layer ceramic substrate for mounting semiconductor devices having a low incidence of cracks between metal filled surface vias, the substrate constructed with a top ceramic layer having a thickness that is at least 20 percent greater than the underlying sheets that embody a redistribution system.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: June 22, 1982
    Assignee: International Business Machines Corp.
    Inventors: Richard J. Hetherington, George E. Melvin, Stephen A. Milkovich, Ernest N. Urfer
  • Multi-layer ceramic substrate
    Patent number: 4302625
    Abstract: An improved multi-layer ceramic substrate for mounting semiconductor devices having a low incidence of cracks between metal filled surface vias, the substrate constructed with a top ceramic layer having a thickness that is at least 20 percent greater than the underlying sheets that embody a redistribution system.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: November 24, 1981
    Assignee: International Business Machines Corp.
    Inventors: Richard J. Hetherington, George E. Melvin, Stephen A. Milkovich, Ernest N. Urfer