US2583013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation of sublimable material
Assignee: Standard Oil Development Co
•
Filing: 1945-10-26
•
Granted: 1952-01-22
•
Expires: 1965-10-26
Abstract
No abstract record available.
Inventors
- 👤 John A Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:10
CPC Classifications
B; B01; B01D; B01D7/00; B01D7/02; C; C07; C07C; C07C51/00; C07C51/54; C07C51/573
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD FOR RECOVERING FROM A VAPOR STREAM A CONTAINED PRODUCT WHICH IS NORMALLY SOLID AND CAPABLE OF SUBLIMING WHICH COMPRISES PASSING THE VAPOR STREAM THROUGH A COOLING ZONE MAINTAINED AT A TEMPERATURE SUITABLE TO EFFECT SOLIDIFICATION OF THE PRODUCT IN THE PRESENCE OF ADDED SOLID PARTICLES OF THE PRODUCT, SEPARATING THE SOLID PRODUCT FROM RESIDUAL VAPORS AND FEEDING BACK SOME OF SAID SOLID PRODUCT TO THE VAPOR STREAM ENTERING THE COOLING ZONE, WHILE MAINTAINING A SUFFICIENT VELOCITY IN SAID VAPOR STREAM TO CARRY
Claim 2
Independent Claim
84 words
A METHOD FOR RECOVERING FROM A VAPOR STREAM A CONTAINED PRODUCT WHICH IS NORMALLY SOLID AND CAPABLE OF SUBLIMING WHICH COMPRISES PASSING THE VAPOR STREAM THROUGH A COOLING ZONE MAINTAINED AT A TEMPERATURE SUITABLE TO EFFECT SOLIDIFICATION OF THE PRODUCT IN THE PRESENCE OF ADDED SOLID PARTICLES OF THE PRODUCT, SEPARATING THE SOLID PRODUCT FROM RESIDUAL VAPORS AND FEEDING BACK SOME OF SAID SOLID PRODUCT TO THE VAPOR STREAM ENTERING THE COOLING ZONE, WHILE MAINTAINING A SUFFICIENT VELOCITY IN SAID VAPOR STREAM TO CARRY
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |