Chemistry: analytical and immunological testing – Tracers or tags
Patent
1994-09-30
1996-06-11
Warden, Jill
Chemistry: analytical and immunological testing
Tracers or tags
436 27, 436 29, 436172, G01N 2164
Patent
active
055255167
ABSTRACT:
This invention provides a method for imparting invisible markings for identification purposes to petroleum hydrocarbons by incorporating one or more infrared fluorescing compounds therein. Certain infrared fluorophores from the classes of squaraines (derived from squaric acid), phthalocyanines and naphthalocyanines are useful in providing invisibly marked petroleum hydrocarbons such as crude oil, lubricating oils, waxes, gas oil (furnace oil), diesel oil, kerosene and in particular gasoline. The near infrared fluorophores are added to the hydrocarbons at extremely low levels and are detected by exposing the marked hydrocarbon compositions to near infrared radiation having a wavelength in the 670-850 nm range and then detecting the emitted fluorescent light via near infrared light detection means.
REFERENCES:
patent: 2058774 (1936-10-01), Colligan
patent: 2925333 (1960-02-01), Thompson et al.
patent: 3004821 (1961-01-01), Gano
patent: 3164449 (1965-01-01), Buxbaum
patent: 3350384 (1967-10-01), Conway
patent: 3435054 (1969-03-01), Kranz et al.
patent: 3574550 (1971-04-01), Scott
patent: 3630941 (1971-12-01), Bergmark
patent: 3690809 (1972-09-01), Orelup
patent: 3704106 (1972-11-01), Orelup
patent: 3862120 (1975-01-01), Orelup
patent: 4009008 (1977-02-01), Orelup
patent: 4049393 (1977-09-01), Orelup
patent: 4209302 (1980-06-01), Orelup
patent: 4278444 (1981-07-01), Beyer et al.
patent: 4303407 (1981-12-01), Marangelli et al.
patent: 4540595 (1985-09-01), Acitelli et al.
patent: 4659676 (1987-04-01), Rhyne
patent: 4735631 (1988-04-01), Orelup
patent: 4755469 (1988-07-01), Shewalter
patent: 4764474 (1988-09-01), Orelup
patent: 4992204 (1991-02-01), Kluger
patent: 5093147 (1992-03-01), Andrus et al.
patent: 5143853 (1992-09-01), Walt
patent: 5201921 (1993-04-01), Luttermann et al.
patent: 5279967 (1994-01-01), Bode
patent: 5292855 (1994-03-01), Krutak
patent: 5336714 (1994-08-01), Krutak
PCT International Publication No. WO94/12874, 9 Jun. 1994.
Cushman Michael R.
Krutak James J.
Weaver Max A.
Carrillo Sharidan
Eastman Chemical Company
Gwinnell Harry J.
Harding Karen A.
Warden Jill
LandOfFree
Method for tagging petroleum products does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for tagging petroleum products, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for tagging petroleum products will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-351204