Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2006-05-23
2006-05-23
Crepeau, Jonathan (Department: 1746)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S006000
Reexamination Certificate
active
07049014
ABSTRACT:
A fuel cell using a secondary alcohol such as 2-propanol as fuel is disclosed. The fuel is oxidized directly at the anode without any reforming. Such a direct secondary alcohol fuel cell (D2AFC) possesses a much higher performance than a direct methanol fuel cell, especially at current densities less than 200 mA/cm2. In addition, fuel loss due to crossover in a direct 2-propanol fuel cell (D2PFC) is less than one-sixth of that in a direct methanol fuel cell (DMFC).
REFERENCES:
patent: 3013908 (1961-12-01), Luck et al.
patent: 3113049 (1963-12-01), Worsham
patent: 4262063 (1981-04-01), Kudo et al.
patent: 4390603 (1983-06-01), Kawana et al.
patent: 4478917 (1984-10-01), Fujita et al.
patent: 5599638 (1997-02-01), Surampudi et al.
patent: 5672438 (1997-09-01), Banerjee et al.
patent: 5904740 (1999-05-01), Davis
patent: 6248460 (2001-06-01), Surampudi et al.
patent: 6383670 (2002-05-01), Edlund et al.
patent: 6492047 (2002-12-01), Peled et al.
patent: 2003/0022033 (2003-01-01), Stimming et al.
patent: 2004/0001979 (2004-01-01), Qi et al.
patent: 2001-068138 (2001-03-01), None
Fedkiw, P., et al., “Pulsed-Potential Oxidation of Methanol,” Journal of the Electrochemical Society vol. 135, No. 10, pp. 2459-2465, Oct. 1988.
Bianchi, G., et al., “Anodic oxidation of propane and C3 compounds in acid solution on the platinum electrode,” Chimica e I'Industria 46 (5), 1964, 501-8 (abstract only).
Hollett Mark
Kaufman Arthur
Qi Zhigang
Banner David L.
Crepeau Jonathan
H Power Corporation
Mark Levy & Associates
LandOfFree
Direct secondary alcohol fuel cells has received 1 rating(s) and 1 review(s), resulting in an average rating of 2.50 on a scale from 1 to 5. The overall rating for this patent is questionable.
If you have personal experience with Direct secondary alcohol fuel cells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct secondary alcohol fuel cells will most certainly appreciate the feedback.
dmm
This patent should not have been granted. It does not pass the "non-obvious" test. All it does is take a pre-existing type of (commercially available) fuel cell, and substitutes rubbing alcohol for the fuel rather than wood alcohol or grain alcohol. It is like granting a patent on woodstoves that burn oak instead of pine, because the applicant has found that oak burns better than pine, without making any special change to the woodstove.
Was this review helpful to you? Rating [ 2.50 ]
Profile ID: LFUS-PAI-O-3529606