US2942016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon zinc sulfate and sulfonate compounds
Assignee: Ethyl Corp
•
Filing: 1958-07-30
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Granted: 1960-06-21
•
Expires: 1978-07-30
Abstract
No abstract record available.
Inventors
- 👤 Gene C Robinson
- 👤 Jr Joseph R Zietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON ZINC SULFATE AND HYDROCARBON ZINC SULFONATE COMPOUNDS HAVING ONLY ONE CARBON TO ZINC LINKAGE AND ONLY ONE OXYGEN TO ZINC LINKAGE.
Claim 2
Dependent Claim
29 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON ZINC SULFATE AND HYDROCARBON ZINC SULFONATE COMPOUNDS HAVING ONLY ONE CARBON TO ZINC LINKAGE AND ONLY ONE OXYGEN TO ZINC LINKAGE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |