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US2511901A Expired / Lapsed US ⏱️ 0.0 years remaining

Agglomeration of carbon black

Assignee: —
•
Filing: —
•
Granted: 1950-06-20
•
Expires: 1967-06-20
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Abstract

No abstract record available.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 01:03
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 128 words
A CONTINUOUS PROCESS FOR PELLETING CARBON BLACK WHICH COMPRISES CONTACTING SMALL GLOBULES OF LATEX WITH DRY FLOCULENT CARBON BLACK ON AN EXTENDED INCLINED MOVING SURFACE OF DRY FLOCCULENT CARBON BLACK TO PRODUCE AGGLOMERATES OF LATEX AND CARBON BLACK, SAID INCLINED MOVING SURFACE MAKING AN ANGLE OF APPROXIMATELY 40* WITH THE HORIZONTAL AND MOVING IN A GENERALLY DOWNWARD DIRECTION AT SAID ANGLE, ADDING FURTHER DRY FLOCCULENT CARBON BLACK TO THE SURFACE OF SAID AGGLOMERATES BY ROLLING SAID AGGLOMERATES DOWN SAID INCLINED SURFACE IN THE DIRECTION OF MOVEMENT OF SAID INCLINED SUFACE, SEPARATING AGGLOMERATES FROM UNAGGLOMERATED CARBON BLACK, RECYCLING THE UNAGGLOMERATED CARBON BLACK INTO THE FIRST MENTIONED DRY FLOCCULENT CARBON BLACK DRYING THE SEPARATED AGGLOMERATES TO A DESIRED MOISTURE CONTENT AND REMOVING DRIED AGGLOMERATES AS THE PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim 128 words
A CONTINUOUS PROCESS FOR PELLETING CARBON BLACK WHICH COMPRISES CONTACTING SMALL GLOBULES OF LATEX WITH DRY FLOCULENT CARBON BLACK ON AN EXTENDED INCLINED MOVING SURFACE OF DRY FLOCCULENT CARBON BLACK TO PRODUCE AGGLOMERATES OF LATEX AND CARBON BLACK, SAID INCLINED MOVING SURFACE MAKING AN ANGLE OF APPROXIMATELY 40* WITH THE HORIZONTAL AND MOVING IN A GENERALLY DOWNWARD DIRECTION AT SAID ANGLE, ADDING FURTHER DRY FLOCCULENT CARBON BLACK TO THE SURFACE OF SAID AGGLOMERATES BY ROLLING SAID AGGLOMERATES DOWN SAID INCLINED SURFACE IN THE DIRECTION OF MOVEMENT OF SAID INCLINED SUFACE, SEPARATING AGGLOMERATES FROM UNAGGLOMERATED CARBON BLACK, RECYCLING THE UNAGGLOMERATED CARBON BLACK INTO THE FIRST MENTIONED DRY FLOCCULENT CARBON BLACK DRYING THE SEPARATED AGGLOMERATES TO A DESIRED MOISTURE CONTENT AND REMOVING DRIED AGGLOMERATES AS THE PRODUCT OF THE PROCESS.

References Cited (Backward Citations)

US295298A Cited
US1876630A Cited
US1239221A Cited
US1558688A Cited
GB270658A Cited
US1863834A Cited
US1846518A Cited
US1980130A Cited
US2071846A Cited
US2185158A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1953-06-19 1953-12-19 1954-06-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1957-06-19 1957-12-19 1958-06-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1961-06-19 1961-12-19 1962-06-20 $7700.00 Window Closed / Lapsed

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