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US2451945A
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Preparation of potassium alcoholates
Assignee: GAF Chemicals Corp
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Filing: 1945-05-25
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Granted: 1948-10-19
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Expires: 1965-05-25
Abstract
No abstract record available.
Inventors
- 👤 William E Hanford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:34
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07C29/70; C07C31/00; C07C31/28; C07C31/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB279095A
Cited
US2278550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |