US2841005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic method and apparatus
Assignee: Gulf Oil Corp
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Filing: 1956-12-11
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Granted: 1958-07-01
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Expires: 1976-12-11
Abstract
No abstract record available.
Inventors
- 👤 Norman D Coggeshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:55
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/42; B; B01; B01D; B01D15/00; B01D15/08; B01D15/10; B01D15/18; B01D15/1814; B01D15/26; B01D15/36; B01D15/361
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A PARTITION CHROMATOGRAPHY APPARATUS WHICH COMPRISES AN ELONGATED TUBULAR PARTITION COLUMN CONTAINING A PARTITIONING MEDIA, THE TWO ENDS OF SAID COLUMN BEING RIGIDLY MOUNTED ON A ROTATABLE HEAD, SAID ROTATABLE HEAD HAVING TWO CHANNELS PASSING THERETHROUGH WHICH COMMUNICATE RESPECTIVELY WITH THE TWO ENDS OF SAID COLUMN, SAID ROTATABLE HEAD BEING ROTATABLYMOUNTED ON A STATIONARY CHARGE INLET BLOCK, SAID BLOCK HAVING A CARRIER FLUID CHANNEL AND AN EFFLUENT CHANNEL PASSING THERETHROUGH, THE OPENINGS OF SUCH CHANNELS ON THE SURFACE OF CONTACT OF SAID BLOCK WITH SAID ROTATABLE HEAD BEING SO POSITIONED THAT WHEN THE CARRIER FLUID CHANNEL COMMUNICATES WITH EITHER OF THE CHANNELS IN THE ROTATABLE HEAD THE EFFLUENT CHANNEL COMMUNICATES WITH THE OTHER CHANNEL IN THE ROTATABLE HEAD, A CARRIER FLUID LINE CONNECTING THE CARRIER FLUID CHANNEL WITH A SOURCE OF CARRIER FLUID, AN EFFLUENT LINE CONNECTING THE EFFELUENT CHANNEL WITH A DETECTING MEANS AND MEANS FOR INTRODUCING A FLUID CHARGE MIXTURE INTO THE CARRIER FLUID CHANNEL.
Claim 2
Dependent Claim
157 words
A PARTITION CHROMATOGRAPHY APPARATUS WHICH COMPRISES AN ELONGATED TUBULAR PARTITION COLUMN CONTAINING A PARTITIONING MEDIA, THE TWO ENDS OF SAID COLUMN BEING RIGIDLY MOUNTED ON A ROTATABLE HEAD, SAID ROTATABLE HEAD HAVING TWO CHANNELS PASSING THERETHROUGH WHICH COMMUNICATE RESPECTIVELY WITH THE TWO ENDS OF SAID COLUMN, SAID ROTATABLE HEAD BEING ROTATABLYMOUNTED ON A STATIONARY CHARGE INLET BLOCK, SAID BLOCK HAVING A CARRIER FLUID CHANNEL AND AN EFFLUENT CHANNEL PASSING THERETHROUGH, THE OPENINGS OF SUCH CHANNELS ON THE SURFACE OF CONTACT OF SAID BLOCK WITH SAID ROTATABLE HEAD BEING SO POSITIONED THAT WHEN THE CARRIER FLUID CHANNEL COMMUNICATES WITH EITHER OF THE CHANNELS IN THE ROTATABLE HEAD THE EFFLUENT CHANNEL COMMUNICATES WITH THE OTHER CHANNEL IN THE ROTATABLE HEAD, A CARRIER FLUID LINE CONNECTING THE CARRIER FLUID CHANNEL WITH A SOURCE OF CARRIER FLUID, AN EFFLUENT LINE CONNECTING THE EFFELUENT CHANNEL WITH A DETECTING MEANS AND MEANS FOR INTRODUCING A FLUID CHARGE MIXTURE INTO THE CARRIER FLUID CHANNEL.
References Cited (Backward Citations)
US2757541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |