US2830879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
After treatment of channel carbon black
Assignee: Godfrey L Cabot Inc
•
Filing: 1955-03-10
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Granted: 1958-04-15
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Expires: 1975-03-10
Abstract
No abstract record available.
Inventors
- 👤 Rollins E Dobbin
- 👤 Curt B Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:59
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN THE PROCESS FOR PRODUCING CARBON BLACK BY IMPINGEMENT OF HYDROCARBON FLAMES AGAINST RECIPROCATING CHANNELS WITHIN A SHELTER, THE IMPROVEMENT WHICH COMPRISES PROVIDING A SERIES OF IMPINGEMENT AND TREATING ZONES IN ALTERNATION WITH ONE ANOTHER ALONG AND BENEATH THE MOVING CHANNELS, BURNING A HYDROCARBON GAS UNDERCARBON BLACK FORMING CONDITIONS IN THE IMPINGEMENT ZONES, THEREBY DEPOSITING CARBON BLACK ON THE CHANNELS CONDUCTING A SELECTED TREATING GAS OF COMPOSITION DIFFER-
Claim 2
Dependent Claim
68 words
IN THE PROCESS FOR PRODUCING CARBON BLACK BY IMPINGEMENT OF HYDROCARBON FLAMES AGAINST RECIPROCATING CHANNELS WITHIN A SHELTER, THE IMPROVEMENT WHICH COMPRISES PROVIDING A SERIES OF IMPINGEMENT AND TREATING ZONES IN ALTERNATION WITH ONE ANOTHER ALONG AND BENEATH THE MOVING CHANNELS, BURNING A HYDROCARBON GAS UNDERCARBON BLACK FORMING CONDITIONS IN THE IMPINGEMENT ZONES, THEREBY DEPOSITING CARBON BLACK ON THE CHANNELS CONDUCTING A SELECTED TREATING GAS OF COMPOSITION DIFFER-
References Cited (Backward Citations)
US2013774A
Cited
US2479708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |