US2859225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of organolead compounds
Assignee: Ethyl Corp
•
Filing: 1955-03-25
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Granted: 1958-11-04
•
Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 Sidney M Blitzer
- 👤 Tillmon H Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:41
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR MAKING HYDROCARBON LEAD COMPOUNDS WHICH COMPRISES REACTING A LEAD CHALKOGEN IN WHICH THE CHALKOGEN IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR WITH A STABLE METALLO HYDROCARBON COMPOUND HAVING UP TO AND INCLUDING 10 CARBON ATOMS IN EACH HYDROCARBON RADICAL AND WHEREIN SAID METAL IN SAID METALLO HYDROCARBON COMPOUND IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS, GROUP II-B METALS, GROUP III-A METALS, WHEREIN THE METAL IS ATTACHED TO CARBON, AND COMBINATIONS OF SUCH METALS WHEREIN EACH METAL IN SAID COMBINATION IS ONLY ATTACHED TO THE OTHER METAL AND TO CARBON.
Claim 2
Dependent Claim
100 words
A PROCESS FOR MAKING HYDROCARBON LEAD COMPOUNDS WHICH COMPRISES REACTING A LEAD CHALKOGEN IN WHICH THE CHALKOGEN IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR WITH A STABLE METALLO HYDROCARBON COMPOUND HAVING UP TO AND INCLUDING 10 CARBON ATOMS IN EACH HYDROCARBON RADICAL AND WHEREIN SAID METAL IN SAID METALLO HYDROCARBON COMPOUND IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS, GROUP II-B METALS, GROUP III-A METALS, WHEREIN THE METAL IS ATTACHED TO CARBON, AND COMBINATIONS OF SUCH METALS WHEREIN EACH METAL IN SAID COMBINATION IS ONLY ATTACHED TO THE OTHER METAL AND TO CARBON.
References Cited (Backward Citations)
US2786860A
Cited
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 |