Patent US2773805A successfully refreshed from Google Patents.
US2773805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization of cracked naphthas with formaldehyde and sodium
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-02-01
•
Granted: 1956-12-11
•
Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 Byron M Vanderbilt
- 👤 John P Thorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:34
CPC Classifications
C; C10; C10G; C10G19/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
38 words
THE PROCESS OF REFINING A LIGHT PETROLEUM DISTILLATE BOILING IN THE MOTOR FUEL BOILING RANGE WHICH COMPRISES CONTACTING SAID DISTILLATE WITH FORMALDEHYDE AND THEN CONTACTING THE DISTILLATE IN VAPOR PHASE WITH AN ALKALI METAL ON A SOLID SUPPORT.
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) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |