Patent US2415355A successfully refreshed from Google Patents.
US2415355A
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Densifying finely divided materials
Assignee: Shawinigan Chemicals Ltd
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Filing: 1943-07-30
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Granted: 1947-02-04
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Expires: 1963-07-30
Abstract
No abstract record available.
Inventors
- 👤 Kaufmann Charles
- 👤 Andersen Arthur Hoijord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:57
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0041; B; B01; B01J; B01J2/00; B01J2/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB326494A
Cited
US1153103A
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FR601270A
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US1801487A
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US1915733A
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US1958279A
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US1908807A
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US2005542A
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US2059432A
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US2057312A
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US2349080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-03 | 1950-08-05 | 1951-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-03 | 1954-08-05 | 1955-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-03 | 1958-08-05 | 1959-02-04 | $7700.00 | Window Closed / Lapsed |