US3574547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High structure,high surface area carbon black
Assignee: Ashland LLC
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Filing: 1966-07-12
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Granted: 1971-04-13
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Expires: 1986-07-12
Abstract
Abstract A FURNACE CARBON BLACK PROCESS INCLUDING THE USE OF A PRESELECTED FEEDSTOCK SPRAY ANGLE AND INJECTION OF ALKALINE EARTH METAL INTO THE REACTOR, A CARBON BLACK PRODUCT HAVING THE COMBINED PROPERTIES OF UNUSUAL HIGH SURFACE AREA AND HIGH STRUCTURE LEVEL, AND THE USE OF SUCH CARBON BLACK IN ORGANIC DEPOLARIZED ELECTROLYTIC CELLS ARE DISCLOSED.
Inventors
- 👤 Fletcher A Hinson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:59
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01P; C01P2006/00; C01P2006/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |