US PATENT SUBCLASS 264 / 623
.~.~ Shaping by extrusion (e.g., spinning, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

603  DF  OUTSIDE OF MOLD SINTERING OR VITRIFYING OF SHAPED INORGANIC ARTICLE OR PREFORM {30}
621  DF  .~ Utilizing sol or gel {2}
623.~.~ Shaping by extrusion (e.g., spinning, etc.)

DEFINITION

Classification: 264/623

Shaping by extrusion (e.g., spinning, etc.):

(under subclass 621) Process wherein an article is formed by forcing a supply of article forming material through a confining and shaping orifice.

SEE OR SEARCH THIS CLASS, SUBCLASS:

176.1+, for processes of shaping by extrusion that do not involve sintering of the formed article outside of a mold.

634, for shaping by extrusion of nonsol or nongel materials followed by sintering outside the mold.

SEE OR SEARCH CLASS

425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

376.1+, for an extrusion shaping machine for nonmetals; see the search notes thereunder.