US PATENT SUBCLASS 65 / 22
.~ With pore forming in situ


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

Internet Version by PATENTEC © 1999      Terms of Use



65 /   HD   GLASS MANUFACTURING

17.1  DF  PROCESSES {32}
22.~ With pore forming in situ


DEFINITION

Classification: 65/22

(under subclass 17.1) Processes combined with the step of forming pores or open cells in situ within a glass composition by a gas forming agent during or subsequent to the formation of a glass product.

SEE OR SEARCH THIS CLASS, SUBCLASS:

20, for processes of foaming slag in situ to form a cellular product.

141, for melt disintegrating or puffing means including fluid-melt contacting means.

SEE OR SEARCH CLASS

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

77+, for a process of bonding lamina including the step of forming pores in situ within a lamina. 264, Plastic and Nonmetallic Article Shaping or Treating: Processes,

41+, for processes under the class definition, which include a pore forming in situ step.

501, Compositions: Ceramic,

39, for processes of forming pores or open cells with a glass melt not combined with specific glass working and/or treating. The line between this class (501) and Class 65 on patents claiming the combination or pore-forming and broad glass working and/or treating is stated in the class definitions of Class 65.

521, Synthetic Resins or Natural Rubbers,

50+, for processes directed to the production of porous or cellular resinous bodies.