Measuring and testing – Gas analysis – Gas chromatography
Reexamination Certificate
2007-05-15
2007-05-15
Cygan, Michael (Department: 2855)
Measuring and testing
Gas analysis
Gas chromatography
C073S023420, C137S597000, C137S240000
Reexamination Certificate
active
11064501
ABSTRACT:
There is provided a diaphragm sealed valve particularly advantageous in chromatographic systems. The valve is provided with first and second body and a seal member compressibly positioned therebetween. The first body comprises a first, a second and a common port, each opening and being interconnected to the others in a recessed fluid communication channel extending in a first interface of the first body. The valve is also provided with first and second plungers, each having a closed position wherein the plunger presses down the seal member against the seat of the corresponding port for closing said corresponding port, and an open position wherein the plunger extends away from the seat for allowing a fluid communication between the corresponding port and the channel. Complex valves are also provided as well as chromatographic systems and methods.
REFERENCES:
patent: 3019815 (1962-02-01), Nelson et al.
patent: 3085440 (1963-04-01), Guenther
patent: 3111849 (1963-11-01), Broerman
patent: 3139755 (1964-07-01), Reinecke et al.
patent: 3140615 (1964-07-01), Broerman
patent: 3198018 (1965-08-01), Broerman
patent: 3376894 (1968-04-01), Broerman
patent: 3387496 (1968-06-01), Broerman
patent: 3417605 (1968-12-01), Hahn
patent: 3439542 (1969-04-01), McCray
patent: 3492873 (1970-02-01), Broerman et al.
patent: 3545491 (1970-12-01), Broerman
patent: 3633426 (1972-01-01), Broerman
patent: 4112766 (1978-09-01), Ragains
patent: 4276907 (1981-07-01), Broerman
patent: 4333500 (1982-06-01), Broerman
patent: 4353243 (1982-10-01), Martin
patent: 4852851 (1989-08-01), Webster
patent: 4976750 (1990-12-01), Munari
patent: 5601115 (1997-02-01), Broerman
patent: 5765591 (1998-06-01), Wasson et al.
patent: 5927332 (1999-07-01), Richard
patent: 5952556 (1999-09-01), Shoji
patent: 6202698 (2001-03-01), Stearns
patent: 6227034 (2001-05-01), Trochesset
patent: 6250332 (2001-06-01), Backlund
patent: 6453725 (2002-09-01), Dahlgren et al.
U.S. Appl. No. 10/957,560, not yet published, Gamache et al.
“Model Eleven Diaphragm Valve for Process Gas Chromatography”, Optichrom Process Chromatograph, 4 p.
Fortier André
Gamache Yves
Cygan Michael
Darby & Darby
Mécanique Analytique Inc.
LandOfFree
Diaphragm-sealed valve, analytical chromatographic 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 Diaphragm-sealed valve, analytical chromatographic system..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diaphragm-sealed valve, analytical chromatographic system... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3792439