US2859231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alkyllead compounds
Assignee: Ethyl Corp
•
Filing: 1955-12-29
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Granted: 1958-11-04
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Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Sidney M Blitzer
- 👤 Tillmon H Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:28
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR MANUFACTURING TETRAALKYLLEAD COMPOUNDS WHICH COMPRISES REACTING IN AN INERT CARRIER LIQUID A LEAD SALT OF AN ORGANIC ACID WHEREIN LEAD IS ATTACHED TO CARBON THROUGH AN INTERMEDIATE CHALKOGEN ATOM SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR AND WHEREIN SAID ORGANIC ACID CONTAINS FROM 1 TO 25 CARBON ATOMS INCLUSIVE WITH AN ALKYL METAL COMPOUND OF A METAL HAVING AN ELECTRODE POTENTIAL OF MORE THAN 0.3 VOLT, AND WHEREIN EACH ALKYL GROUP OF SAID ALKYL METAL COMPOUND CONTAINS UP TO 8 CARBON ATOMS INCLUSIVE.
Claim 2
Dependent Claim
88 words
A PROCESS FOR MANUFACTURING TETRAALKYLLEAD COMPOUNDS WHICH COMPRISES REACTING IN AN INERT CARRIER LIQUID A LEAD SALT OF AN ORGANIC ACID WHEREIN LEAD IS ATTACHED TO CARBON THROUGH AN INTERMEDIATE CHALKOGEN ATOM SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR AND WHEREIN SAID ORGANIC ACID CONTAINS FROM 1 TO 25 CARBON ATOMS INCLUSIVE WITH AN ALKYL METAL COMPOUND OF A METAL HAVING AN ELECTRODE POTENTIAL OF MORE THAN 0.3 VOLT, AND WHEREIN EACH ALKYL GROUP OF SAID ALKYL METAL COMPOUND CONTAINS UP TO 8 CARBON ATOMS INCLUSIVE.
References Cited (Backward Citations)
US1938180A
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 |