US2537076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen fluoride recovery
Assignee: Standard Oil Co
•
Filing: 1948-08-25
•
Granted: 1951-01-09
•
Expires: 1968-08-25
Abstract
No abstract record available.
Inventors
- 👤 David A Mccaulay
- 👤 Arthur P Lien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:46
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/19; C01B7/191
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A PROCESS FOR RECOVERING HYDROGEN FLUORIDE FROM A GASEOUS MIXTURE CONTAINING THE SAME, WHICH PROCESS COMPRISES CONTACTING SAID MIXTURE WITH A VICINAL DITHIOETHER HAVING THE FORMULA
Claim 2
Dependent Claim
26 words
A PROCESS FOR RECOVERING HYDROGEN FLUORIDE FROM A GASEOUS MIXTURE CONTAINING THE SAME, WHICH PROCESS COMPRISES CONTACTING SAID MIXTURE WITH A VICINAL DITHIOETHER HAVING THE FORMULA
References Cited (Backward Citations)
US2379041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |