Patent US2468233A successfully refreshed from Google Patents.
US2468233A
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US
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Process of preparing casting solutions
Assignee: Celanese Corp
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Filing: 1945-06-28
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Granted: 1949-04-26
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Expires: 1965-06-28
Abstract
No abstract record available.
Inventors
- 👤 John H Prichard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:48
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/095; C08J2301/00; C08J2301/08; C08J2301/26; C08J2301/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1467105A
Cited
US1909935A
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US1982760A
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GB435058A
Cited
US2100425A
Cited
US2254904A
Cited
US2221019A
Cited
US2319051A
Cited
US2369484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |