US2794749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace carbon black slurries and process for making same
Assignee: Phillips Petroleum Co
•
Filing: 1950-06-09
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Granted: 1957-06-04
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Expires: 1970-06-09
Abstract
No abstract record available.
Inventors
- 👤 Walter A Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:53
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/215; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2006/00; C01P2006/22; C08J2321/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A AQUEOUS FURNACE CARBON BLACK SLURRIES HAVING VISCOSITIES OF LESS THAN 1000 CENTIPOISES AND CONTAINIG FROM 15 TO 25 WEIGHT PERCENT OF FURNACE CARBON BLACK HAVING A PH OF AT LEAST 8.6 COMPRISING, FURNACE CARBON BLACK, WATER FROM 0.5 TO 1.5 WEIGHT PERCENT OF SAID BLACK OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TANNINS, NATURAL-OCCURING TANNIN-CONTAINING MATERIALS, GALLIC ACID AND NATURAL-OCCURING GALLIC ACID-CONTAINING MATERIALS; FROM 1 TO 2.5 WEIGHT PERCENT OF SAID BLACK OF A MATERIALS; SELECTED FROM THE GROUP CONSISTING OF LIGNIN, LIGNIN SULFONATES, ALKALI METAL SALTS OF LIGNIN SULFONATES, AND AMMONIUM LIGNIN SULFONATES; AND FROM 0.1 TO 0.5 WEIGHT PERCENT OF SAID BLACK OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, AND AMMONIUM HYDROXIDE.
Claim 2
Dependent Claim
122 words
A AQUEOUS FURNACE CARBON BLACK SLURRIES HAVING VISCOSITIES OF LESS THAN 1000 CENTIPOISES AND CONTAINIG FROM 15 TO 25 WEIGHT PERCENT OF FURNACE CARBON BLACK HAVING A PH OF AT LEAST 8.6 COMPRISING, FURNACE CARBON BLACK, WATER FROM 0.5 TO 1.5 WEIGHT PERCENT OF SAID BLACK OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TANNINS, NATURAL-OCCURING TANNIN-CONTAINING MATERIALS, GALLIC ACID AND NATURAL-OCCURING GALLIC ACID-CONTAINING MATERIALS; FROM 1 TO 2.5 WEIGHT PERCENT OF SAID BLACK OF A MATERIALS; SELECTED FROM THE GROUP CONSISTING OF LIGNIN, LIGNIN SULFONATES, ALKALI METAL SALTS OF LIGNIN SULFONATES, AND AMMONIUM LIGNIN SULFONATES; AND FROM 0.1 TO 0.5 WEIGHT PERCENT OF SAID BLACK OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES, AND AMMONIUM HYDROXIDE.
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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) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |