US3319403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic device
Assignee: Alltech Associates Inc
•
Filing: 1965-08-10
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Granted: 1967-05-16
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Expires: 1985-08-10
Abstract
No abstract record available.
Inventors
- 👤 Rose Arthur
- 👤 Robert E Kemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:36
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/60; G01N30/6052; G01N30/6073; G01N30/6078; G01N30/6034; G01N30/6043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A COLUMN FOR THE SEPARATION OF MIXTURES OF GASES BY FIXED PHASE-MOVING PHASE CHROMATOGRAPHY COMPRISING: AT LEAST THREE STRAIGHT RODS DISPOSED IN PARALLEL RELATIONSHIP AND IN TANGENTICAL CONTACT WITH ONE ANOTHER FORMING A PLURALITY OF PARALLEL CHANNELS THEREBETWEEN CONTAINING CHROMATOGRAPHIC SEPARATING MATERIAL; CLAMPING MEANS ADAPTED TO SECURE SAID PLURALITY OF RODS IN FIXED POSITION; MEANS TO CONNECT THE END PORTIONS OF EACH OF SAID CHANNELS FORMED BY SAID AT LEAST THREE STRAIGTH RODS, WITH
Claim 2
Dependent Claim
74 words
A COLUMN FOR THE SEPARATION OF MIXTURES OF GASES BY FIXED PHASE-MOVING PHASE CHROMATOGRAPHY COMPRISING: AT LEAST THREE STRAIGHT RODS DISPOSED IN PARALLEL RELATIONSHIP AND IN TANGENTICAL CONTACT WITH ONE ANOTHER FORMING A PLURALITY OF PARALLEL CHANNELS THEREBETWEEN CONTAINING CHROMATOGRAPHIC SEPARATING MATERIAL; CLAMPING MEANS ADAPTED TO SECURE SAID PLURALITY OF RODS IN FIXED POSITION; MEANS TO CONNECT THE END PORTIONS OF EACH OF SAID CHANNELS FORMED BY SAID AT LEAST THREE STRAIGTH RODS, WITH
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |