US2867843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for compacting finely divided solids
Assignee: Dow Silicones Corp
•
Filing: 1955-01-10
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Granted: 1959-01-13
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Expires: 1975-01-10
Abstract
No abstract record available.
Inventors
- 👤 Harold L Browne
- 👤 Owen C Cookingham
- 👤 Donn W Pendleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:05
CPC Classifications
B; B30; B30B; B30B5/00; B30B5/04; B30B5/06; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/60; C01; C01P; C01P2006/00; C01P2006/10; Y; Y10; Y10S; Y10S100/00; Y10S100/903; Y10S100/907; Y10S425/00; Y10S425/101; Y10S425/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1949175A
Cited
US2067401A
Cited
US2161308A
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US2167432A
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US2569226A
Cited
US2483638A
Cited
US2635301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |