US3379673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmented compositions and method of manufacture
Assignee: Cabot Corp
•
Filing: 1963-02-28
•
Granted: 1968-04-23
•
Expires: 1983-02-28
Abstract
No abstract record available.
Inventors
- 👤 Raymond P Rossman
- 👤 Merrill E Jordan
- 👤 Eli M Dannenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:23
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR MAKING SUPERIOR ARTICLES FROM CARBON BLACK-FILLED POLYMERIC COMPOSITONS WITHOUT THE NECESSITY FOR PROCESSING SAME AT PRESSURES SUBSTANTIALLY ABOVE ATMOSPHERIC WHICH COMPRISES DISPERSING IN A POLYMERIC SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, POLYBUTENE, COPOLYMERS THEREOF AND MIXTURES THEREOF AN OIL FURNACE CARBON BLACK HAVING AN AVERAGE PARTICLE DIAMETER BETWEEN ABOUT 20 AND ABOUT 30 MILLIMICRONS, AN OIL ABSORPTION FACTOR OF BETWEEN ABOUT 110 LBS. AND ABOUT 250 LBS./LB., A SURFACE AREA BETWEEN ABOUT 110 AND ABOUT 220 M.2/GRAM, AND WHICH HAS BEEN HEATED TO A TEMPERATURE ABOVE ABOUT 500*C. IN THE ABSENCE OF ANY SUBSTANTIAL AMOUNTS OF AIR AND EXTRUDING THE RESULTING DISPERSION INTO THE FINAL SHAPE DESIRED AT ABOUT ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
117 words
A PROCESS FOR MAKING SUPERIOR ARTICLES FROM CARBON BLACK-FILLED POLYMERIC COMPOSITONS WITHOUT THE NECESSITY FOR PROCESSING SAME AT PRESSURES SUBSTANTIALLY ABOVE ATMOSPHERIC WHICH COMPRISES DISPERSING IN A POLYMERIC SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, POLYBUTENE, COPOLYMERS THEREOF AND MIXTURES THEREOF AN OIL FURNACE CARBON BLACK HAVING AN AVERAGE PARTICLE DIAMETER BETWEEN ABOUT 20 AND ABOUT 30 MILLIMICRONS, AN OIL ABSORPTION FACTOR OF BETWEEN ABOUT 110 LBS. AND ABOUT 250 LBS./LB., A SURFACE AREA BETWEEN ABOUT 110 AND ABOUT 220 M.2/GRAM, AND WHICH HAS BEEN HEATED TO A TEMPERATURE ABOVE ABOUT 500*C. IN THE ABSENCE OF ANY SUBSTANTIAL AMOUNTS OF AIR AND EXTRUDING THE RESULTING DISPERSION INTO THE FINAL SHAPE DESIRED AT ABOUT ATMOSPHERIC PRESSURE.
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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |