Appeal 2007-1112
Application 10/692,116
13. Seal states that these composite overwraps “offer very high
strength-to-weight ratios and are ideal for making lightweight
pressure vessels.” (Seal at 1:24-27).
14. According to Seal, the overwraps “have relatively high
permeability and cannot contain high pressure liquids or gases or
low pressure gases for extended periods of time” and therefore
“must have a liner to prevent leakage.” (Seal at 1:27-31).
15. Seal notes that one of the two “primary technologies” is
“graphite/epoxy composite with a yielding aluminum liner”. (Seal
at 1:39-42).
16. The invention of Seal is described as a composite overwrapped
pressure vessel made of a titanium alloy such as titanium alloyed
with aluminum. (Seal at 2:6-19).
17. The overwrap “can comprise a graphite/epoxy composite.” (Seal
at 2:64-68).
18. An object of Seal is to provide a cylinder that is strong while
being low in weight. (Seal at 3:16-26).
19. Luttmann states that its “invention relates to a process for
producing a filled, sealed and sterilized container [such as a metal
can] comprising at least one can body and at least one lid body,
which can be opened without the aid of a tool…” (Luttmann at
1:11-15).
20. According to Luttmann, “[a] particular problem occurs in
containers where, after filling and sealing, the contents must be
preserved by sterilization [since] the internal pressure within the
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