US3922223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple chromatographic column system
Assignee: United States Department of the Navy
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Filing: 1974-03-25
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Granted: 1975-11-25
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Expires: 1994-03-25
Abstract
Abstract A multiple chromatographic column system comprising a multiple station column cabinet and a multiple outlet two stage pressure manifold. The system provides a reliable device which will perform pressurized multiple column chromatography.
Inventors
- 👤 Gary L Burkhartsmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:27
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/466; B; B01; B01D; B01D15/00; B01D15/08; B01D15/10; B01D15/16; B01D15/163; B01D15/18; B01D15/1864; B01D15/1885; G01N30/28; G01N30/32; B01D15/26; B01D15/34; B01D15/36; B01D15/361
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A CHROMATOGRAPHIC COLUMN SYSTEM FOR FORCING A MOBILE PHASE MATERIAL THROUGH A STATIONARY PHASE MATERIAL COMPRISING: A. AN AIR SOURCE, B. SAID AIR SOURCE CONNECTED TO THE INPUT OF A PRIMARY REGULATOR, C. THE OUTPUT OF SAID REGULATOR CONNETED TO THE INPUT OF A MANIFOLD, D. THE OUTPUT OF SAID MANIFOLD CONNECTED TO THE INPUT OF AT LEAST ONE ON/OFF NEEDLE VALVE, E. THE OUTPUT OF SAID AT LEAST ONE ON/OFF NEEDLE VALVE CONNECTED TO AT LEAST ONE SECONDARY REGULATOR, F. THE OUTPUT OF SAID AT LEAST ONE SECONDARY REGULATOR CONNECTED BOTH TO AT LEAST ONE NEEDLE BLEED VALVE AND TO AT LEAST ONE PRESSURE COLUMN, G. THE OUTPUT OF SAID AT LEAST ONE PRESSURE COLUMN CONNECTED TO AT LEAST ONE FILTER, H. THE PRESSURE IN SAID AT LEAST ONE PRESSURE COLUMN IS MAINTAINED ON OR ABOUT A CONSTANT VALUE, AND I. SAID AT LEAST ONE ON/OFF NEEDLE VALVE, SAID AT LEAST ONE SECONDARY REGULATOR, SAID AT LEAST ONE NEEDLE BLEED VALVE, SAID AT LEAST ONE PRESSURE COLUMN, AND SAID AT LEAST ONE FILTER RESPECTIVELY COMPRISE A PLURALITY OF ON/OFF NEEDLE VALVES, A PLURALITY OF SECONDARY REGULATORS, A PLURALITY OF NEEDLE BLEED VALVES, A PLURALITY OF PRESSURE COLUMNS AND A PLURALITY OF FILTERS.
Claim 2
Dependent Claim
203 words
A CHROMATOGRAPHIC COLUMN SYSTEM FOR FORCING A MOBILE PHASE MATERIAL THROUGH A STATIONARY PHASE MATERIAL COMPRISING: A. AN AIR SOURCE, B. SAID AIR SOURCE CONNECTED TO THE INPUT OF A PRIMARY REGULATOR, C. THE OUTPUT OF SAID REGULATOR CONNETED TO THE INPUT OF A MANIFOLD, D. THE OUTPUT OF SAID MANIFOLD CONNECTED TO THE INPUT OF AT LEAST ONE ON/OFF NEEDLE VALVE, E. THE OUTPUT OF SAID AT LEAST ONE ON/OFF NEEDLE VALVE CONNECTED TO AT LEAST ONE SECONDARY REGULATOR, F. THE OUTPUT OF SAID AT LEAST ONE SECONDARY REGULATOR CONNECTED BOTH TO AT LEAST ONE NEEDLE BLEED VALVE AND TO AT LEAST ONE PRESSURE COLUMN, G. THE OUTPUT OF SAID AT LEAST ONE PRESSURE COLUMN CONNECTED TO AT LEAST ONE FILTER, H. THE PRESSURE IN SAID AT LEAST ONE PRESSURE COLUMN IS MAINTAINED ON OR ABOUT A CONSTANT VALUE, AND I. SAID AT LEAST ONE ON/OFF NEEDLE VALVE, SAID AT LEAST ONE SECONDARY REGULATOR, SAID AT LEAST ONE NEEDLE BLEED VALVE, SAID AT LEAST ONE PRESSURE COLUMN, AND SAID AT LEAST ONE FILTER RESPECTIVELY COMPRISE A PLURALITY OF ON/OFF NEEDLE VALVES, A PLURALITY OF SECONDARY REGULATORS, A PLURALITY OF NEEDLE BLEED VALVES, A PLURALITY OF PRESSURE COLUMNS AND A PLURALITY OF FILTERS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |