Data card

Details Data card Data card

1977-09-26

1980-05-13

Kilgore, Robert M.

Registers

Records

Fluorescent, phosphorescent, radiation emitting

331 945F, 235468, 250365, G06K 1906, G06K 710, H03F 122, G11B 100

Patent

active

042024919

ABSTRACT:
A data card wherein various data are recorded with a fluorescent material which emits infrared rays when excited by infrared rays is disclosed.
The data card according to this invention has such merit that it is very effective for the preservation of secrecy and the prevention of forgery, that it is not affected by stains, that different information can be recorded thereon one over the other, and that it can be read by an extraordinarily compact reader.

REFERENCES:
patent: Re27770 (1973-10-01), Siegel
patent: 3279826 (1966-10-01), Rudershausen
patent: 3316500 (1967-04-01), Newman
patent: 3355675 (1967-11-01), Varsanyi
patent: 3473027 (1969-10-01), Freeman
patent: 3536894 (1970-10-01), Travioli
patent: 3668079 (1972-06-01), Diamond
patent: 3719901 (1973-03-01), Monchamp
patent: 3725811 (1973-04-01), Murphy
patent: 3763356 (1973-10-01), Berler
patent: 3786237 (1974-01-01), Postal
patent: 3829662 (1974-08-01), Furahashi
patent: 3919447 (1975-11-01), Kilmer
patent: 3933094 (1976-01-01), Murphy
patent: 3946203 (1976-03-01), Hecht
patent: 3975098 (1976-08-01), West

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