ALTERNATIFF's website contains lots of info about .tiff and .tif images,
if you go through the many pages there, including the technical stuff.
TIFF format simply doesn't have much in the way of standards, so you
can't view all TIFFs with all supposed TIFF viewers.
No, I could not view the Patent Office Tiffs online, as I don't have
Alternatiff installed.....Quicktime 3.x plugin balks on them. I haven't
tried Irfan because I haven't downloaded the file.
Note that at the Alternatiff site, they mention that the new Netscape
6.x doesn't work at the Patent Office web site......sounds like Netscape
6 is not ready for prime time.