US2850403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black pellets and a process for their manufacture
Assignee: Godfrey L Cabot Inc
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Filing: 1954-04-05
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Granted: 1958-09-02
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Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jeptha V Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:25
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/28; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K9/00; C08K9/04; C01; C01P; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/21
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
ESSENTIALLY CARBON BLACK PELLETS HAVING DEPOSITED WITHIN THE INTERSTICES THEREOF AND THEREON CARBON IN AN AMOUNT EQUAL TO ABOUT 0.1-0.4% OF THE WEIGHT OF THE BLACK PRODUCED BY SPRAYING A CARBOHYDRATE MATERIAL DISSOLVED IN WATER ONTO THE CARBON BLACK DURING PELLETIZATION THEREOF AND DRYING THE PELLETS THEREBY PRODUCED SUFFICIENTLY TO EVAPORATE SUBSTANTIALLY ALL OF THE WATER THEREFROM AND TO SUBSTANTIALLY COMPLETELY CARBONIZE THE CARBOHYDRATE ADMIXED THEREWITH.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |