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US2426968A
Expired / Lapsed
US
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Method of esterifying polyhydric organic compounds
Assignee: Joseph E Seagram and Sons Inc
•
Filing: 1944-11-06
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Granted: 1947-09-02
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Expires: 1964-11-06
Abstract
No abstract record available.
Inventors
- 👤 Henry W Grubb
- 👤 Leo M O'hara
- 👤 Atwood Kenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:14
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1141266A
Cited
US1534752A
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US1881563A
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US1898687A
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US2053029A
Cited
GB465983A
Cited
US2173124A
Cited
US2224912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-01 | 1951-03-03 | 1951-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-01 | 1955-03-03 | 1955-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-01 | 1959-03-03 | 1959-09-02 | $7700.00 | Window Closed / Lapsed |