US2818373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for vacuum distillation
Assignee: BDH Chemicals Ltd
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Filing: 1955-04-04
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Granted: 1957-12-31
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Ockrent Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:24
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/12; C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
APPARATUS FOR MOVING FILM MOLECULAR DISTILLATION COMPRISING: MEANS DEFINING A SEALED CHAMBER ADAPTED TO BE EVACUATED; A STATIONARY DISTILLING SURFACE; A CONDENSING CHAMBER; MEANS FOR HEATING SAID SURFACE; A CONDENSING SURFACE WITHIN SAID CHAMBER IN SPACES, RELATIVELY CLOSE RELATION TO SAID DISTILLING SURFACE; MEANS FOR FEEDING DISTILLAND TO SAID DISTILLING SURFACE; A FIRST MEMBER WITHIN SAID CHAMBER COMPRISING A WIPER FOR SAID DISTILLING SURFACE; A SECOND MEMBER OUTSIDE SAID CHAMBER, AT LEAST ONE OF SAID MEMBERS BEING A MAGNET AND THE OTHER MEMBER BEING ATTRACHED THERETO; AND MEANS MOVING SAID SECOND MEMBER TO CAUSE SAID WIPER MEMBER KTO MOVE OVER SAID DISTILLING SURFACE AND DISTRIBUTE A THIN FILM OF DISTILLAND THEREON.
Claim 2
Dependent Claim
111 words
APPARATUS FOR MOVING FILM MOLECULAR DISTILLATION COMPRISING: MEANS DEFINING A SEALED CHAMBER ADAPTED TO BE EVACUATED; A STATIONARY DISTILLING SURFACE; A CONDENSING CHAMBER; MEANS FOR HEATING SAID SURFACE; A CONDENSING SURFACE WITHIN SAID CHAMBER IN SPACES, RELATIVELY CLOSE RELATION TO SAID DISTILLING SURFACE; MEANS FOR FEEDING DISTILLAND TO SAID DISTILLING SURFACE; A FIRST MEMBER WITHIN SAID CHAMBER COMPRISING A WIPER FOR SAID DISTILLING SURFACE; A SECOND MEMBER OUTSIDE SAID CHAMBER, AT LEAST ONE OF SAID MEMBERS BEING A MAGNET AND THE OTHER MEMBER BEING ATTRACHED THERETO; AND MEANS MOVING SAID SECOND MEMBER TO CAUSE SAID WIPER MEMBER KTO MOVE OVER SAID DISTILLING SURFACE AND DISTRIBUTE A THIN FILM OF DISTILLAND THEREON.
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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |