US2845136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatography
Assignee: Consolidated Electrodynamics Corp
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Filing: 1955-09-12
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Granted: 1958-07-29
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Expires: 1975-09-12
Abstract
No abstract record available.
Inventors
- 👤 Charles F Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:02
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/50; G01N30/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A COLUMN FOR THE CHROMATOGRAPHIC SEPARATION OF A GAS SAMPLE FLOWING THROUGH THE COLUMN FROM A FLUID INLET TO A FLUID OUTLET, THE COMBINATION COMPRISING A PLURALITY OF STRUCTURALLY STABLE PERMEABLE REFRACTORY WAFERS OF A DIAMETER APPROXIMATING THE INSIDE DIAMETER OF THE COLUMN DISPOSED IN SUBSTANTIALLY UNINTERRUPTED FACE-TOFACE CONTACT TRANSVERSELY IN THE COLUMN BETWEEN SAID FLUID INLET AND SAID FLUID OUTLET, THE SEVERAL WAFERS CONSTITUTING MEANS TO IMPART SUBSTANTIALLY UNIFORM DISTRIBUTION OF FLOWING GAS THROUGHOUT SUBSTANTIALLY THE ENTIRE CROSSSECTIONAL AREA OF THE COLUMN AND THROUGHOUT THAT PORTION
Claim 2
Dependent Claim
88 words
IN A COLUMN FOR THE CHROMATOGRAPHIC SEPARATION OF A GAS SAMPLE FLOWING THROUGH THE COLUMN FROM A FLUID INLET TO A FLUID OUTLET, THE COMBINATION COMPRISING A PLURALITY OF STRUCTURALLY STABLE PERMEABLE REFRACTORY WAFERS OF A DIAMETER APPROXIMATING THE INSIDE DIAMETER OF THE COLUMN DISPOSED IN SUBSTANTIALLY UNINTERRUPTED FACE-TOFACE CONTACT TRANSVERSELY IN THE COLUMN BETWEEN SAID FLUID INLET AND SAID FLUID OUTLET, THE SEVERAL WAFERS CONSTITUTING MEANS TO IMPART SUBSTANTIALLY UNIFORM DISTRIBUTION OF FLOWING GAS THROUGHOUT SUBSTANTIALLY THE ENTIRE CROSSSECTIONAL AREA OF THE COLUMN AND THROUGHOUT THAT PORTION
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |