Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2007-09-04
2007-09-04
Ryan, Patrick Joseph (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S010000, C429S006000
Reexamination Certificate
active
10721615
ABSTRACT:
A fuel cell system comprises a fuel cell, a hydrogen discharge valve for discharging hydrogen from the fuel cell under a predetermined condition, a hydrogen concentration reduction device for reducing the concentration of hydrogen discharged from the hydrogen discharge valve, a hydrogen sensor for detecting an instantaneous hydrogen concentration of a gas processed by the hydrogen concentration reduction device and an average hydrogen concentration calculating unit for calculating an average hydrogen concentration per hour of a gas processed by the hydrogen concentration reduction device, wherein a hydrogen discharge from the fuel cell by the hydrogen discharge valve is prohibited in the event that an instantaneous hydrogen concentration detected by the hydrogen sensor exceeds a first threshold, or in the event that an average hydrogen concentration calculated by the average hydrogen concentration calculating unit exceeds a second threshold which is lower than the first threshold.
REFERENCES:
patent: 2001/0014415 (2001-08-01), Iio et al.
patent: 2002/0094469 (2002-07-01), Yoshizumi et al.
patent: 01-89155 (1989-04-01), None
patent: 08-031436 (1996-02-01), None
patent: 2002-93438 (2002-03-01), None
patent: WO-03/010841 (2003-02-01), None
patent: WO-03/032426 (2003-04-01), None
Hayashi Masanori
Murakami Yoshikazu
Numata Hideo
Ueda Kenichiro
Lahive & Cockfield LLP
Laurentano, Esq. Anthony A.
Lewis Ben
Ryan Patrick Joseph
LandOfFree
Fuel cell system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuel cell system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel cell system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3742121