US2969320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of tetraethyl lead from hydrocarbon liquids with sulfur dioxide
Assignee: ExxonMobil Oil Corp
•
Filing: 1959-02-03
•
Granted: 1961-01-24
•
Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 Shapiro Abraham
- 👤 Dan A H Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:03
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/08; C10G21/00; C10G21/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF REMOVING TETRAETHYL LEAD FROM A HYDROCARBON LIQUID WHICH COMPRISES: BRINGING SAID LIQUID INTO CONTACT WITH GASEOUS SULFUR DIOXIDE UNDER CONDITIONS CAPABLE OF CAUSING A SUBSTANTIAL DEGREE OF SOLUTION OF SAID SULFUR DIOXIDE IN SAID LIQUID, WHEREBY TETRAETHYL LEAD IS DECOMPOSED AND A LEAD-BEARING PRECIPITATE IS FORMED.
Claim 2
Independent Claim
49 words
THE METHOD OF REMOVING TETRAETHYL LEAD FROM A HYDROCARBON LIQUID WHICH COMPRISES: BRINGING SAID LIQUID INTO CONTACT WITH GASEOUS SULFUR DIOXIDE UNDER CONDITIONS CAPABLE OF CAUSING A SUBSTANTIAL DEGREE OF SOLUTION OF SAID SULFUR DIOXIDE IN SAID LIQUID, WHEREBY TETRAETHYL LEAD IS DECOMPOSED AND A LEAD-BEARING PRECIPITATE IS FORMED.
References Cited (Backward Citations)
US2580243A
Cited
US2368261A
Cited
US2448235A
Cited
US2453138A
Cited
US2651594A
Cited
US2745793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |