US3401189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetramethyl lead manufacture
Assignee: EIDP Inc
•
Filing: 1966-02-07
•
Granted: 1968-09-10
•
Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 Sandy Charles Anthony
- 👤 Tullio Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:58
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR MAKING TETRAMETHYL LEAD WHICH COMPRISES REACTING MONOSODIUM-LEAD ALLOY WITH METHYL CHLORIDE IN THE LIQUID PHASE, AT LEAST 1 MOEL OF METHYL CHLORIDE BEING PRESENT PER MOLE OF ALLOY, IN THE PRESENCE OF 0.05 TO 1 MOLE, PER MOLE OF ALLOY, OF A HYDROXYLAMINE OF THE FORMULA RONH2 WHERE R IS HYDROGEN OR LOWER ALKYL, AT A TEMPERATURE OF 20* TO 120*C.
Claim 2
Dependent Claim
64 words
A PROCESS FOR MAKING TETRAMETHYL LEAD WHICH COMPRISES REACTING MONOSODIUM-LEAD ALLOY WITH METHYL CHLORIDE IN THE LIQUID PHASE, AT LEAST 1 MOEL OF METHYL CHLORIDE BEING PRESENT PER MOLE OF ALLOY, IN THE PRESENCE OF 0.05 TO 1 MOLE, PER MOLE OF ALLOY, OF A HYDROXYLAMINE OF THE FORMULA RONH2 WHERE R IS HYDROGEN OR LOWER ALKYL, AT A TEMPERATURE OF 20* TO 120*C.
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |