Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Reexamination Certificate
2011-08-09
2011-08-09
Vanoy, Timothy C (Department: 1734)
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
Reexamination Certificate
active
07993622
ABSTRACT:
The present invention relates to a method for preparing dithionite solution with a reaction wherein sodium bisulfite is reduced with sodium borohydride solution to obtain dithionite, wherein the rise of the pH of the solution is prevented by adjusting the pH with carbon dioxide.
REFERENCES:
patent: 791675 (1905-06-01), Deschamps
patent: 1472828 (1923-11-01), Eustis
patent: 4788041 (1988-11-01), Sanglet
patent: 5094833 (1992-03-01), Ko et al.
patent: 5098679 (1992-03-01), Knollmueller
patent: 5562803 (1996-10-01), Wang et al.
patent: 2004/0000380 (2004-01-01), Goda
patent: 0027369 (1981-04-01), None
patent: 1375735 (2004-01-01), None
patent: 1418269 (2004-05-01), None
patent: 1524241 (2005-04-01), None
patent: 8810334 (1988-12-01), None
patent: 9220855 (1992-11-01), None
patent: 9722749 (1997-06-01), None
patent: 9856988 (1998-12-01), None
patent: 2008135631 (2008-11-01), None
Wartik et al., “Reactions of Carbon Dioxide with Sodium and Lithium Borohydrides”, J. Inorg. Nucl. Chem., 1958, vol. 7, pp. 404-411.
European Search Report dated Jun. 1, 2010 for Application No. 08761628.0-2124 / 2150489 PCT/FI2008050225, 6 pages.
Written Opinion of the International Searching Authority; International Application No. PCT/FI2008/050225 (7 pages), dated Jul. 28, 2009.
International Search Report; International Application No. PCT/FI2008/050225; Date of Mailing of ISR Jan. 8, 2008 (3 pages), dated Aug. 2008.
Cantor & Colburn LLP
Kemira Oyj
Vanoy Timothy C
LandOfFree
Method for preparing dithionite 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 preparing dithionite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing dithionite will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2785012