Appeal No. 1998-1569
Application 08/485,081
Various methods and materials have been developed to create protective coatings for
pipes. A typical method for protecting pipe involves providing an aluminum coating
which is applied to an iron pipe, as exemplified by U.S. Patent Nos. 4,755,224,
4,878,963 and 3,881,880. Aluminum is typically used as a pipe coating because it is
noted for its ability to resist corrosion. In these patents, a thin layer is applied to an
iron pipe before installation in a harsh environment, such as in or near salt water.
Many of the protective aluminum coatings and their methods of application were even
developed to enable the pipe to be used in high temperature environments.
The prior art also discloses protective pipe coating that employ alloys so as to
obtain the benefits offered by a combination of materials in a protective coating. For
example, U.S. Patent Nos. 4,891,274 and 5,234,514 utilize varying amounts of silicon
and several other materials to create aluminum alloys that provide varying degrees of
protection, as well as other benefits that aluminum alone can provide.
Reversed
Remanded
CHUNG K. PAK )
Administrative Patent Judge )
)
)
)
CHARLES F. WARREN ) BOARD OF PATENT
Administrative Patent Judge ) APPEALS AND
) INTERFERENCES
)
)
ROMULO H. DELMENDO )
Administrative Patent Judge )
Calvin E. Thorpe
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