US3287207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of distributing siliceous fillers uniformly throughout a water-laid web while the web is on the fourdrinier wire
Assignee: JM Huber Corp
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Filing: 1964-04-17
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Granted: 1966-11-22
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Expires: 1984-04-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph O Treat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:22
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/68; D21H23/00; D21H23/02; D21H23/22; D21H23/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A METHOD OF DISTRIBUTING SILICEOUS FILLER PIGMENTS OF A PARTICLE SIZE OF FROM 0.01 TO 0.6 MICRON SUBSTANTIALLY UNIFORMLY THROUGHTOUT A MOVING WEB ON A FOURDRINIER PAPERMAKING MACHING WHICH CONSISTS ESSENTIALLY OF SPRAYING AN AQUEOUS SLURRY OF SAID FILLER PIGMENTS TO SAID MOVING WEB FROM A HEIGHT OF FROM ABOUT 6 INCHES TO ABOUT 4 FEET ABOVE THE MOVING WEB AT A SPRAY PRESSURE OF FROM ABOUT 3 P.S.I.G. TO ABOUT 20 P.S.I.G. FROM SPARY PRESSURE OF FROM ABOUT ABOVE THE MOVING WEB AND INTERMEDIATE THE HEADBOX AND THE FIRST VACUUM BOX OF THE PAPERMAKING MACHINE WHEREIN THE SOLIDS CONTENT OF THE MOVING WEB IS SUCH THAT THE FILLER IS UNIFORMLY DRAWN SUBSTANTIALLY COMPLETELY THERETHROUGH AND IS SUBSTANTIALLY COMPLETELY RETAINED THEREIN, THEREBY DISTRIBUTING SAID FILLER PIGMENT UNIFORMLY THROUGHOUT SAID MOVING WEB.
Claim 2
Independent Claim
131 words
A METHOD OF DISTRIBUTING SILICEOUS FILLER PIGMENTS OF A PARTICLE SIZE OF FROM 0.01 TO 0.6 MICRON SUBSTANTIALLY UNIFORMLY THROUGHTOUT A MOVING WEB ON A FOURDRINIER PAPERMAKING MACHING WHICH CONSISTS ESSENTIALLY OF SPRAYING AN AQUEOUS SLURRY OF SAID FILLER PIGMENTS TO SAID MOVING WEB FROM A HEIGHT OF FROM ABOUT 6 INCHES TO ABOUT 4 FEET ABOVE THE MOVING WEB AT A SPRAY PRESSURE OF FROM ABOUT 3 P.S.I.G. TO ABOUT 20 P.S.I.G. FROM SPARY PRESSURE OF FROM ABOUT ABOVE THE MOVING WEB AND INTERMEDIATE THE HEADBOX AND THE FIRST VACUUM BOX OF THE PAPERMAKING MACHINE WHEREIN THE SOLIDS CONTENT OF THE MOVING WEB IS SUCH THAT THE FILLER IS UNIFORMLY DRAWN SUBSTANTIALLY COMPLETELY THERETHROUGH AND IS SUBSTANTIALLY COMPLETELY RETAINED THEREIN, THEREBY DISTRIBUTING SAID FILLER PIGMENT UNIFORMLY THROUGHOUT SAID MOVING WEB.
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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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |