Chemistry: analytical and immunological testing – Hydrogen – per se
Reexamination Certificate
2008-01-29
2008-01-29
Soderquist, Arlen (Department: 1743)
Chemistry: analytical and immunological testing
Hydrogen, per se
C250S281000, C250S282000, C250S286000, C250S287000, C250S288000, C436S139000, C436S141000, C436S173000, C436S175000, C436S178000, C436S181000
Reexamination Certificate
active
10702904
ABSTRACT:
A method is provided for the quantitative analysis of the contents, in nitrogen, of hydrogen and methane by ionic mobility spectrometry. The method includes the steps of: a) performing a measurement of the apparent hydrogen concentration in the nitrogen to be analyzed; b) performing a measurement of the apparent hydrogen concentration in a flow of the same sample of nitrogen, purified of all impurities but methane; and c) comparing the two measurements. A system of branched lines is also provided for carrying out the method.
REFERENCES:
patent: 4306887 (1981-12-01), Barosi et al.
patent: 4317995 (1982-03-01), Bradshaw et al.
patent: 4378499 (1983-03-01), Spangler et al.
patent: 5283199 (1994-02-01), Bacon, Jr. et al.
patent: 5304796 (1994-04-01), Siefering et al.
patent: 5457316 (1995-10-01), Cohen et al.
patent: 5475217 (1995-12-01), Bradshaw
patent: 5723861 (1998-03-01), Carnahan et al.
patent: 5736739 (1998-04-01), Uber et al.
patent: 5955886 (1999-09-01), Cohen et al.
patent: 6639214 (2003-10-01), Ketkar et al.
patent: 0 902 283 (1999-03-01), None
patent: 2 177 080 (1987-01-01), None
patent: WO 02-052255 (2002-07-01), None
Dotan, I. et al, Journal of Chemical Physics 1976, 65, 5028-5030.
Ogino, H. et al, Analytical Chemistry 1991, 63), 1376-1379.
Ridgeway, R. G. et al, Proceedings—Institute of Environmental Sciences 1992, 38th, 68-73.
Siefering, K. et al, Proceedings—Institute of Environmental Sciences 1992, 38th, 74-81.
Ketkar, S. N. et al, Journal of the Electrochemical Society 1992, 139, 3675-3678.
Kimura, T. et al, Proceedings—Institute of Environmental Sciences 1993, 39TH, 14-19.
Mitsui, Y. et al, Japanese Journal of Applied Physics, Part 1 1993, 32, 2886-2891.
Siefering, K. et al, Journal of Vacuum Science & Technology, A 1993, 11, 1593-1597.
Solcia, C. et al, Proceedings—Institute of Environmental Sciences 1994, 40th, 53-61.
Stimac, R. M.et al, Proceedings—Institute of Environmental Sciences 1996, 42nd, 5-12.
Pusterla, L. et al, Proceedings—Institute of Environmental Sciences 1997, 43rd, 336-346.
Ketkar, S. N. et al, Analytical Chemistry 2001, 73, 2554-2557.
Baumbach et al., “Ion Mobility Spectrometry: Arriving On Site and Moving Beyond a Low Profile”,Applied Spectroscopy, vol. 53, No. 9, pp. 338A-355A, 1999.
Backx et al., “Electron-ion coincidence measurements of CH4”,J. Phys. B: Atom. Molec. Phys., vol. 8, No. 18, pp. 3020-3033, 1975.
Pusterla Luca
Succi Marco
Akin Gump Strauss Hauer & Feld & LLP
Saes Getters S.p.A.
Soderquist Arlen
LandOfFree
Method of measuring the concentration of hydrogen and... 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 measuring the concentration of hydrogen and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of measuring the concentration of hydrogen and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3940134