US2684293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized tetraethyllead compositions
Assignee: Ethyl Corp
•
Filing: 1952-01-22
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Granted: 1954-07-20
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Expires: 1972-01-22
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Hill
- 👤 Pree David O De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:51
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/103; C10L1/14; C10L1/22; C10L1/232; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A NEW COMPOSITION STABLE TO OXIDATION CONSISTING ESSENTIALLY OF TETRAETHYLLEAD AND, IN QUANTITY SUFFICIENT TO INHIBIT DETERIORATION IN THE PRESENCE OF OXYGEN, A DI-SUBSTITUTED DIHYDROXYBENZENE, ONE SUBSTITUENT OF WHICH IS AN ALKYLAMINOMETHYL CONTAINING 1 TO 6 CARBON ATOMS AND THE SECOND SUBSTITUENT OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND ALKYLAMINOMETHYL CONTAINING 1 TO 6 CARBON ATOMS.
Claim 2
Dependent Claim
60 words
A NEW COMPOSITION STABLE TO OXIDATION CONSISTING ESSENTIALLY OF TETRAETHYLLEAD AND, IN QUANTITY SUFFICIENT TO INHIBIT DETERIORATION IN THE PRESENCE OF OXYGEN, A DI-SUBSTITUTED DIHYDROXYBENZENE, ONE SUBSTITUENT OF WHICH IS AN ALKYLAMINOMETHYL CONTAINING 1 TO 6 CARBON ATOMS AND THE SECOND SUBSTITUENT OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND ALKYLAMINOMETHYL CONTAINING 1 TO 6 CARBON ATOMS.
References Cited (Backward Citations)
US2361337A
Cited
US2553441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |