Chemistry: electrical and wave energy – Processes and products
Patent
1980-09-10
1982-01-05
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
G01D 1506
Patent
active
043092551
ABSTRACT:
A medium for electrochromic recording is provided by treating paper with a water soluble leuco methylene blue compound having the formula ##STR1## wherein R is a sulfonated aromatic or sulfonated aliphatic moiety.
REFERENCES:
patent: Re29427 (1977-10-01), Sekine
patent: 3864684 (1975-02-01), Shimuzu
patent: 3871972 (1975-03-01), Sekine
patent: 3951757 (1976-04-01), Yoshino
patent: 4211616 (1980-07-01), Sambucetti
Gendler Paul L.
Grant Barbara D.
Snyder Clinton D.
International Business Machines - Corporation
Tufariello T. M.
Walsh Joseph G.
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