Chemistry: analytical and immunological testing – Process or composition for determination of physical state... – Surface area – porosity – imperfection – or alteration
Patent
1994-04-22
1996-12-10
Soderquist, Arlen
Chemistry: analytical and immunological testing
Process or composition for determination of physical state...
Surface area, porosity, imperfection, or alteration
436 1, 436127, 436138, 436172, 436904, 422 56, 422 86, G01N 3100
Patent
active
055830471
ABSTRACT:
A method of detecting the permeability of an article to oxygen is disclosed. A fluorescent redox indicator, preferably riboflavin, is dispersed in a carrier and placed on an impermeable substrate. The article to be measured is placed adjacent to the carrier. Residual oxygen is removed, the redox indicator is photoreduced, the article and carrier are exposed to oxygen, and the indicator is exposed to UV light.
REFERENCES:
patent: 3725658 (1973-04-01), Stanley et al.
patent: 3768976 (1973-10-01), Hu et al.
patent: 4023934 (1977-05-01), Spinner et al.
patent: 4169811 (1979-10-01), Yoshikawa et al.
patent: 4349509 (1982-09-01), Yoshikawa et al.
patent: 4478792 (1984-10-01), McConnaughfy et al.
patent: 4526752 (1985-07-01), Perlman et al.
patent: 4657736 (1987-04-01), Marsoner et al.
patent: 4659674 (1987-04-01), Bauman et al.
patent: 4810655 (1989-03-01), Khalil et al.
patent: 5096813 (1992-03-01), Krumhar et al.
patent: 5104811 (1992-04-01), Berger et al.
patent: 5107696 (1992-04-01), Mayer et al.
patent: 5155046 (1992-01-01), Hui et al.
patent: 5211875 (1993-05-01), Speer et al.
patent: 5316949 (1994-05-01), Bull et al.
"Fluorometric Analysis of Riboflavin and Its Coenzymes"; Jacek Koziol; Methods in Enzymology, vol. XVIII, Vitamins and Coenzymes 1971; pp. 253-285.
"Photochemistry of Flavins"; G. R. Penzer and G. K. Radda; Methods in Enzymology vol. XVIII, Vitamins and Coenzymes 1971; Part B, pp. 479-495.
Fisher Scientific Ctalog 1988, p. SDS 261C.
M. Koizumi et al. Bull. Chem. Soc. Japan 1964, 37, 108-117.
A. V. Karyakin et al. Zh. Fiz. Khim. 1962, 36, 2286-2287.
A. V. Karyakin et al. Chem. Abstr. 1963, 58, 5159c.
K. L. Arvan et al., Chem. Abstr. 1964, 60, 8815b.
M. Koizumi et al. Chem. Abstr. 1964, 60, 10096f.
C. Kemal et al. J. Am. Chem. Soc. 1977, 99, 7272-7286.
J. Cantet et al. Angl. Chem. 1990, 62, 1502-1506.
C. Franco et al. Talanta 1990, 37, 905-909.
Barmore Charles R.
Blinka Thomas A.
Bull Christopher
Speer Drew V.
Looper Valerie E.
Soderquist Arlen
W. R. Grace & Co.,-Conn.
LandOfFree
Method of detecting the permeability of an object to oxygen 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 of detecting the permeability of an object to oxygen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting the permeability of an object to oxygen will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-423693