Gas separation: processes – With control responsive to sensed condition – Gas flow rate sensed
Reexamination Certificate
2006-01-10
2006-01-10
Hopkins, Robert A. (Department: 1724)
Gas separation: processes
With control responsive to sensed condition
Gas flow rate sensed
C095S025000, C095S026000, C055S467000, C096S422000, C096S424000
Reexamination Certificate
active
06984256
ABSTRACT:
An operational state of a system for filtering imaging by-products from an airflow is monitored by comparing a measurement of the flow rate of the airflow to a threshold. Additionally, an operational state of a filtration element is monitored by accumulating a count indicative of the remaining capacity of the filtration element in a memory device coupled to the filtration element.
REFERENCES:
patent: 4751501 (1988-06-01), Gut
patent: 4786295 (1988-11-01), Newman et al.
patent: 6186140 (2001-02-01), Hoague
patent: 6203590 (2001-03-01), Byrd et al.
patent: 6387156 (2002-05-01), Richardson, Jr. et al.
Burgess David Bruce
Dall William John
Kheifets Alexander
Lamprecht Anton W.
Leonard Dean Laurent
Creo Inc.
Hopkins Robert A.
Oyen Wiggs Green & Mutala LLP
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