Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Solid hydrocarbon polymer
Reexamination Certificate
2011-07-19
2011-07-19
Caldarola, Glenn (Department: 1771)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Solid hydrocarbon polymer
C508S512000, C508S486000, C508S150000, C508S165000
Reexamination Certificate
active
07981849
ABSTRACT:
A reversible thermal thickening grease for microelectronic packages, in which the grease contains filler particles; at least one polymer; and a binder; in which the filler particles are dispersed within the binder, in which one or more segments of the at least one polymer may be attached to the filler particles prior to dispersion in the binder, and in which the polymer collapses at temperatures below a Theta temperature and swells at temperatures above a Theta temperature. During the operation of a microelectronic package, grease pump-out and air proliferation are minimized with use of the reversible thermal thickening grease, while grease fluidity is retained under repetitive thermal stresses.
REFERENCES:
patent: 3243369 (1966-03-01), Dekking
patent: 7626251 (2009-12-01), Lu et al.
Feger Claudius
Gelorme Jeffrey D.
Iruvanti Sushumna
Kumar Rajneesh
Nnebe Ijeoma M.
Caldarola Glenn
Connolly Bove & Lodge & Hutz LLP
Goloboy Jim
International Business Machines - Corporation
Morris, Esq. Daniel P.
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