The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Dec. 22, 1995
Jon Alfred Casey, Poughkeepsie, NY (US);
Cynthia Jeane Calli, Newburgh, NY (US);
Darren T Cook, Newburgh, NY (US);
David B Goland, Croton-on-Hudson, NY (US);
John Ulrich Knickerbocker, Hopewell Junction, NY (US);
Mark Joseph LaPlante, Walden, NY (US);
David Clifford Long, Wappingers Falls, NY (US);
Daniel Scott Mackin, Pleasant Valley, NY (US);
Kathleen Mary McGuire, Walkill, NY (US);
Keith Colin O'Neil, Hughsonville, NY (US);
Kevin Michael Prettyman, Holmes, NY (US);
Michael Thomas Puchalski, Carmel, NY (US);
Joseph Christopher Saltarelli, Poughkeepsie, NY (US);
Candace Anne Sullivan, Pleasant Valley, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention relates generally to a new apparatus and method for screening using porous backing material. More particularly, the invention encompasses an apparatus that uses a porous backing material which is adhered to a green sheet during the screening process. Basically, a backing layer having a very high porosity is adhered to a green sheet, while the green sheet is screened. During the drying process of the green sheet some of the screening fluids are absorbed by the porous backing layer, which allows the screened vias of the green sheet to have a smooth surface.