Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Reexamination Certificate
2005-05-03
2005-05-03
Mai, Ngoclan T. (Department: 1742)
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
C419S065000, C419S066000, C508S421000, C508S433000, C508S441000, C508S443000, C508S444000, C508S185000, C508S150000, C508S389000, C508S390000
Reexamination Certificate
active
06887295
ABSTRACT:
The present invention relates to improved metallurgical powder compositions that incorporate solid lubricants, methods for preparing and using the same, and methods of making compacted parts. Ejection properties, such as stripping pressure and sliding pressure, of compacted parts can be improved by using the solid lubricants. The solid lubricants contain functionalized polyalkylene glycol lubricants that contain a phosphate group, phosphite group, hypophosphate group, hypophosphite group, polyphosphate group, thiophosphate group, dithiophosphate group, thiocarbamate group, dithiocarbamate group, borate group, thiosulfate group, sulfate group, a sulfonate group or combinations thereof.
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Luk Sydney
Poszmik George
Hoeganaes Corporation
Mai Ngoclan T.
Woodcock & Washburn LLP
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