US2690960A
Expired / Lapsed
US
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Detonation process of making carbon black
Assignee: Godfrey L Cabot Inc
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Filing: 1951-05-09
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Granted: 1954-10-05
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Expires: 1971-05-09
Abstract
No abstract record available.
Inventors
- 👤 George B Kistiakowsky
- 👤 Jr George D Halsey
- 👤 Murray E Malin
- 👤 Herbert T Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:53
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
A PROCESS FOR THE PRODUCTION OF CARBON BLACK WHICH COMPRISES THE STEPS OF CONFINING IN ONE PORTION OF A LIMITED REACTION SPACE A MAKE CHARGE OF A GASEOUS MEDIUM THAT CONTAINS A HYDROCARBON HAVING A HYDROGEN-CARBON RATIO NOT SUBSTANTIALLY GREATER THAN 2 IN ITS COMPOSITION, WHICH IS THERMODYNAMICALLY UNSTABLE TO THE DEGREE THAT IT WILL DETONATE WHEN STRUCK BY A DETONATION WAVE AND WHICH CONTAINS NO MORE THAN 1 OXYGEN ATOM PER CARBON ATOM, CONFINING IN ANOTHER PORTION OF SAID REACTION SPACE A DETONATION CHARGE OF A MATERIAL WHICH WILL DETONATE UPON IGNITION, INTERPOSING A SEPARATING MEDIM BETWEEN THE MAKE-CHARGE AND THE DETONATION CHARGE, IGNITING THE DETONATION CHARGE, IMPINGING THE RESULTING DETONATION WAVE AGAINST THE MAKE CHARGE WHEREBY THE MAKE CHARGE IS CAUSED TO DETONATE, AND RECOVERING THE CARBON BLACK PRODUCED THEREFROM.
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) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |