US3528785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black pelletization including heated boundary wall
Assignee: Cabot Corp
•
Filing: 1969-02-03
•
Granted: 1970-09-15
•
Expires: 1989-02-03
Abstract
No abstract record available.
Inventors
- 👤 George W Dingus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:24
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/30; B01J2/10; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2004/00; C01P2004/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2263118A
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US2787599A
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US2900668A
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US3019093A
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US2964392A
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US3206278A
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US3012874A
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US3032390A
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US3330874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |