Re: U.S. Patents

[P3D Bill Burns <billb@xxxxxxxxx>]

P3D Hayden B. Baldwin wrote:
> 
> While looking for information on a patent I came across the following at
> the US Patent web site:
> 
> US Patent 5,371,562 was issued Dec. 6, 1994 to Timothy Hahm & Joseph
> Mainco of the Eastman Kodak Company for a "STEREOSCOPIC DISK and VIEWER
> and METHOD OF MAKING. The abstract for the patent reads as follows: "A
> stereoscopic disk for viewing stereo images in a binocular viewer
> includes a film disk with a plurality of stereo images pairs disposed
> around the perphery of the film disk, sandwiched between two pairs of
> disks of opaque material defining windows, in which the stereo images on
> the film disk are located."
> 
> Sounds like VIEW MASTER to me! Kodak patent in 1994? Something you folks
> at the Rochester conference forgot to tell us?  :-)
> 

The difference is that the Kodak disk is a single piece of film, the
multiple images being printed onto it from a single master negative,
rather than the Viewmaster method of making multiple film chip images
and mounting them into a cardboard disk.  Once the Kodak master disk is
made, this presumably simplifies the manufacturing process, and
eliminates mounting registration problems, at the expense of using
rather more film stock.
 
-- 
Bill Burns
Long Island   NY   USA
mailto:billb@xxxxxxxxx


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