US3411929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for collecting and treating carbon black
Assignee: Ashland LLC
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Filing: 1966-01-19
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Granted: 1968-11-19
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Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:52
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/487; C09C1/50; C09C1/56; C09C1/565; C01; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |