US2859232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of organolead compounds
Assignee: Ethyl Corp
•
Filing: 1958-03-11
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Granted: 1958-11-04
•
Expires: 1978-03-11
Abstract
No abstract record available.
Inventors
- 👤 Sidney M Blitzer
- 👤 Tillmon H Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:42
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR MAKING HYDROCARBON LEAD COMPOUNDS WHICH COMPRISES REACTING A HYDROCARBON MAGNESIUM HALIDE WHEREIN THE HYDROCARBON RADICAL HAS UP TO ABOUT 10 CARBON ATOMS WITH A LEAD CHALKOGEN WHEREIN THE CHALKOGEN IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR.
Claim 2
Dependent Claim
42 words
A PROCESS FOR MAKING HYDROCARBON LEAD COMPOUNDS WHICH COMPRISES REACTING A HYDROCARBON MAGNESIUM HALIDE WHEREIN THE HYDROCARBON RADICAL HAS UP TO ABOUT 10 CARBON ATOMS WITH A LEAD CHALKOGEN WHEREIN THE CHALKOGEN IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR.
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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |