Chemistry: analytical and immunological testing – Process or composition for determination of physical state...
Patent
1980-11-24
1983-06-21
Richman, Barry
Chemistry: analytical and immunological testing
Process or composition for determination of physical state...
436 58, 436147, 436169, 436905, 374106, 116200, 116216, 2504741, 422 56, 422 58, 426 88, 430270, G01K 1112, G01N 3100, G01T 102, G01T 108
Patent
active
043892175
ABSTRACT:
A recording device is described, useful as an integrated time-temperature or radiation-dosage history indicator. The device contains a substrate having deposited thereon at least two indicating units, one being unreacted and representing zero time of exposure and the other unit being pre-reacted. Each unit is comprised of an acetylenic compound containing at least one --C.tbd.C--C.tbd.C-- group, capable of reacting by 1,4-addition polymerization thereby forming an end-point color after an irreversible, progressive color change upon thermal annealing or exposure to actinic radiation. The end-point color represents an integrated time-temperature history of thermal annealing or radiation-dosage history. Each unit is constructed such that the time required to form the end-point color by thermal annealing at a given temperature or for a known thermal history, or exposure to actinic radiation at a given average radiation dosage rate, is predetermined. A process is also described for using the device as well as an article having the device affixed thereto.
REFERENCES:
patent: T910005 (1973-05-01), Rasch et al.
patent: 3501302 (1970-03-01), Poltz
patent: 3679738 (1972-07-01), Creameans
patent: 3723121 (1973-03-01), Houser
patent: 3743505 (1973-07-01), Bloom et al.
patent: 3822134 (1974-07-01), Rasch et al.
patent: 3999946 (1976-12-01), Patel et al.
patent: 4070912 (1978-01-01), McNaughton
patent: 4189399 (1980-02-01), Patel
patent: 4195055 (1980-03-01), Patel
patent: 4195056 (1980-03-01), Patel
patent: 4195058 (1980-03-01), Patel
patent: 4208186 (1980-06-01), Patel
patent: 4228126 (1980-10-01), Patel
patent: 4235108 (1980-11-01), Patel
patent: 4238352 (1980-12-01), Patel
patent: 4276190 (1981-06-01), Patel
Baughman Ray H.
Miller Granville G.
Patel Gordhanbhai N.
Allied Corporation
Doernberg Alan M.
Fuchs Gerhard H,.
Richman Barry
Stroup, Jr. Kenneth E.
LandOfFree
Integrated time-temperature or radiation-dosage history recordin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated time-temperature or radiation-dosage history recordin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated time-temperature or radiation-dosage history recordin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2108957