[X3D-Public] US Patent 6,754,400

[Tom Sparks]

----- Original Message -----

From: Don Brutzman <brutzman at nps.edu>

>The Background node was approved by ISO as part of the VRML 97
>international standard back in 1997.  This would appear to provide
>prior art regarding several surprising claims made in 2001 by
>patent 6754400.  Joe's helpful comments also make sense. 
<snip>
Is there any records why this background node was deiced upon?

you can keep up to date with the case at http://groups.google.com/group/vr-patents
 

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