Patent US2464187A successfully refreshed from Google Patents.
US2464187A
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Process for preparing finely divided materials
Assignee: FMC Corp
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Filing: 1943-05-20
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Granted: 1949-03-08
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Expires: 1963-05-20
Abstract
No abstract record available.
Inventors
- 👤 Max Y Seaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:23
CPC Classifications
B; B01; B01J; B01J2/00; C; C07; C07C; C07C19/00; C07C19/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1464844A
Cited
US1645142A
Cited
US1601898A
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US1659435A
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US1884313A
Cited
US1837869A
Cited
US1976204A
Cited
US2100151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |