Patent US1566778A successfully refreshed from Google Patents.
Patent US2742342A successfully refreshed from Google Patents.
US2742342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for vaporization of sublimate solids
Assignee: Individual
•
Filing: 1952-06-10
•
Granted: 1956-04-17
•
Expires: 1972-06-10
Abstract
No abstract record available.
Inventors
- 👤 John N Dew
- 👤 Cedomir M Sliepcevich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:50
CPC Classifications
A; A01; A01M; A01M1/00; A01M1/20; A01M1/2022; A01M1/2061; A01M1/2083
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
A METHOD FOR SUBLIMING LINDANE WHICH COMPRISES HEATING AIR WITHIN A CONFINED PASSGEWAY TO A TEMPERATURE BETWEEN 50 AND 65* C. SUCH THAT A CURRENT OF HEATED AIR IS INDUCED, SUPPORTING A PERVIOUS LAYER OF LINDANE WITHIN SAID CONFINED PASSAGEWAY AT A SUBSTANTIAL DISTANCE ABOVE THE ZONE OF HEATING SUCH THAT SAID INDUCED CURRENT OF HEATED AIR PERCOLATE THROUGH SAID PERVIOUS LAYER OF LINDANE AT A TEMPERATURE BELOW ITS MELTING POINT AND MAINTAINING SAID SOLIDS BETWEEN 50 AND 60* C. THEREBY SUBLIMING THE LINDANE WITHOUT MELTING THE SOLIDS AT A RATE LIMITED BY THE INDUCED AIR CIRCULTION.
References Cited (Backward Citations)
US1988617A
Cited
US1992684A
Cited
US2143246A
Cited
US2501496A
Cited
US2513919A
Cited
US1975082A
Cited
US2180213A
Cited
US2591818A
Cited
US2541637A
Cited
US2616024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |