Patent US4951656A successfully refreshed from Google Patents.
US2580243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of deleading gasoline
Assignee: —
•
Filing: —
•
Granted: 1951-12-25
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Expires: 1968-12-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:09
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/08; C10G21/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR DELEADING GASOLINE CONTAINING TETRAETHYLLEAD WHICH COMPRISING TREATING SAID GASOLINE WITH AN INORGANIC OXIDE OF NITROGEN.
Claim 2
Dependent Claim
18 words
A PROCESS FOR DELEADING GASOLINE CONTAINING TETRAETHYLLEAD WHICH COMPRISING TREATING SAID GASOLINE WITH AN INORGANIC OXIDE OF NITROGEN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |