US PATENT SUBCLASS 264 / 125
.~.~ Sintering or heat fusing particles

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

109  DF  FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED PARTICLES {12}
123  DF  .~ Autogenously or by activation of dry coated particles {2}
125.~.~ Sintering or heat fusing particles {1}
126  DF  .~.~.~> Of organic material {1}

DEFINITION

Classification: 264/125

(under subclass 123) Processes in which the autogenous bonding of the particles is effected by the application of heat with or without pressure.

(1) Note. Heat resulting from the application of pressure alone is not considered to be a positive application of heat. Also, some but not all of the particles may be melted; essentially the formed body must be of joined particles, not particles liquified by heat. Patents in which powdered or particulate material is completely melted are provided for in subclasses 239+ based on various manipulative molding steps.

SEE OR SEARCH THIS CLASS, SUBCLASS:

239+, and see (1) Note above.

603+, for a process of sintering a shaped inorganic preform external of a mold.