Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1975-10-01
1978-01-31
Padgett, Benjamin R.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
23230LC, 252299, 252408, 428 1, 116114Y, 106 19, 106 20, C09K 334, G01K 1116, C09D 1110
Patent
active
040709124
ABSTRACT:
Polymeric mixtures of a cholesterol material and a monomer are disclosed which can advantageously be utilized for the construction of temperature indicating devices. Each polymeric composition exhibits a color at temperatures below a fixed threshold temperature and then appears colorless at the threshold temperature. This characteristic permits safe, compact, accurate, fast responsive, disposable temperature indicating and warning devices to be made.
REFERENCES:
patent: 3576761 (1971-04-01), Davis
patent: 3600060 (1971-08-01), Churchill et al.
patent: 3617374 (1971-11-01), Hodson et al.
patent: 3619254 (1971-11-01), Davis
patent: 3620889 (1971-11-01), Baltzer
patent: 3633425 (1972-01-01), Sanford
patent: 3661142 (1972-05-01), Flam
patent: 3826141 (1974-07-01), Pickett et al.
patent: 3871232 (1975-03-01), Pickett et al.
patent: 3885982 (1975-05-01), Fergason
patent: 3898354 (1975-08-01), Parker
patent: 3929021 (1975-12-01), Pecorella
patent: 3969264 (1976-07-01), Davis
patent: 3974317 (1976-08-01), Sharple ss
McClintock, executor by Jerry
McNaughtan, deceased Thomas J.
Ferrill, Jr. Thomas M.
Gron T. S.
Padgett Benjamin R.
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