Patent FR1318688A successfully refreshed from Google Patents.
US2466445A
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Reaction product of a polyhydroxyl alcohol with a trivalent metal sulfate
Assignee: Individual
•
Filing: 1946-12-13
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Granted: 1949-04-05
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Expires: 1966-12-13
Abstract
No abstract record available.
Inventors
- 👤 Landau Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/144; D06M13/148; C; C07; C07C; C07C31/00; C07C31/28; D06M11/00; D06M11/51; D06M11/55; D06M11/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-04 | 1952-10-04 | 1953-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-04 | 1956-10-04 | 1957-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-04 | 1960-10-04 | 1961-04-05 | $7700.00 | Window Closed / Lapsed |