US2283364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for agglomerating carbon black
Assignee: United Carbon Co Inc
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Filing: 1938-04-29
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Granted: 1942-05-19
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Expires: 1958-04-29
Abstract
No abstract record available.
Inventors
- 👤 Hanson Hilding
- 👤 Robert W Skoog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:16
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; B; B01; B01J; B01J2/00; B01J2/20; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/384; C01P; C01P2004/00; C01P2004/60; C01P2006/00; C01P2006/10; C01P2006/80; C01P2006/82; Y; Y10; Y10S; Y10S425/00; Y10S425/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-05-18 | 1945-11-17 | 1946-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-05-18 | 1949-11-17 | 1950-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-05-18 | 1953-11-17 | 1954-05-19 | $7700.00 | Window Closed / Lapsed |