Very interesting.
Thanks for posting the patent.
It read like a scientific paper rather than a typical patient and divulged way
too much information, IMO, for the claim.
One item of interest was the mention of a waterproof medium in example three. I
wonder if that was a hint at what is now known as RC paper which I believe
Kodak introduced later in the sixties.
Regards,
Bill Riley
On Mar 2, 2021, at 12:14 AM, `Richard Knoppow <dickburk@xxxxxxxxxxxxx> wrote:
FWIW, this is the patent for Kodak Hypo Clearing Agent. The PDF is not
too large so I thought I would post it instead of just the patent number.
--
Richard Knoppow
dickburk@xxxxxxxxxxxxx
WB6KBL
<PHOTOGRAPHIC_WASHING_ACCELERATORS.pdf>
