US2695871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary molecular vacuum still
Assignee: Abbott Laboratories
•
Filing: 1951-09-25
•
Granted: 1954-11-30
•
Expires: 1971-09-25
Abstract
No abstract record available.
Inventors
- 👤 Jr John Shavel
- 👤 Harold E Zaugg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:24
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/12; B01D3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
VACUUM DISTILLATION APPARATUS COMPRISING, A CYLINDER, EVACUATING MEANS FOR SAID CYLINDER, CLOSURE MEANS ABUTTING ONE END OF SAID CYLINDER, A VAPORIZING CHAMBER AXIALLY DISPOSED IN SAID CYLINDER, CONDENSER MEANS CLOSING THE OTHER END OF SAID CYLINDER AND EXTENDING INTO SAID CHAMBER, THE INNER END OF SAID CONDENSER BEING MOVABLE WITH RESPECT TO THE AXIS OF THE VAPORIZING CHAMBER, SAID CHAMBER ROTATABLY CONNECTED TO SAID CLOSURE MEANS, MEANS FOR ROTATING SAID CHAMBER, AND RADIANT HEATING MEANS EXTERNALLY DISPOSED ON SAID CYLINDER.
Claim 2
Dependent Claim
80 words
VACUUM DISTILLATION APPARATUS COMPRISING, A CYLINDER, EVACUATING MEANS FOR SAID CYLINDER, CLOSURE MEANS ABUTTING ONE END OF SAID CYLINDER, A VAPORIZING CHAMBER AXIALLY DISPOSED IN SAID CYLINDER, CONDENSER MEANS CLOSING THE OTHER END OF SAID CYLINDER AND EXTENDING INTO SAID CHAMBER, THE INNER END OF SAID CONDENSER BEING MOVABLE WITH RESPECT TO THE AXIS OF THE VAPORIZING CHAMBER, SAID CHAMBER ROTATABLY CONNECTED TO SAID CLOSURE MEANS, MEANS FOR ROTATING SAID CHAMBER, AND RADIANT HEATING MEANS EXTERNALLY DISPOSED ON SAID CYLINDER.
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) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |