Ultraviolet active wristband

Details Ultraviolet active wristband Ultraviolet active wristband

1998-03-12

1999-06-22

Nakarani, D. S.

Stock material or miscellaneous articles

Composite

Of carbohydrate

40633, 250372, 2504741, 359241, 359244, 428913, A44C 500, B32B 2900

Patent

active

059141972

ABSTRACT:
The present invention teaches an ultraviolet active wristband. The ultraviolet active wristband is made of the same materials as any wristband already in the market. However, the present wristband has the intriguing propriety of changing color reversibly from clear to any visible color (violet, blue, red, orange, yellow . . . ) when exposed to an ultraviolet source. The wavelength interval of the ultraviolet source photochromic substance such as spiropyrans, spiroxazines.

REFERENCES:
patent: 1151940 (1915-08-01), Gauvreau
patent: 1407239 (1922-02-01), Weiss
patent: 1427891 (1922-09-01), Ziegler
patent: 4122947 (1978-10-01), Falla
patent: 4906025 (1990-03-01), Schreindl
patent: 4980089 (1990-12-01), Heller
patent: 5028792 (1991-07-01), Mullis
patent: 5581090 (1996-12-01), Goudjil

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