US2450099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the condensation of an arylalkane in the presence of lead alkyl
Assignee: Universal Oil Products Co
•
Filing: 1945-11-23
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Granted: 1948-09-28
•
Expires: 1965-11-23
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:02
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875317A
Cited
US1573846A
Cited
US1975959A
Cited
US2009108A
Cited
US2259630A
Cited
US2160943A
Cited
US2271956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |