US3354035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process of drying uncoated fibrous webs
Assignee: Albemarle Paper Manufacturing Co
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Filing: 1966-11-08
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Granted: 1967-11-21
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Expires: 1986-11-08
Abstract
No abstract record available.
Inventors
- 👤 Bruce C Gottwald
- 👤 Brenton S Halsey
- 👤 Robert C Williams
- 👤 John M Haigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:12
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A CONTINUOUS PROCESS FOR DRYING AN UNCOATED FIBROUS WEB MATERIAL CONTAINING VOLATILE LIQUID COMPRISING THE COMBINATION OF SIMULTANEOUS STEPS OF (A) CONTACTING SAID UNCOATED FIBROUS WEB MATERIAL CONTINUOUSLY WITH A SUBSTANTIAL PORTION OF A ROTATING DRUM SURFACE HEATED TO A TEMPERATURE OF AT LEAST ABOUT 250*F., AND (B) PRESSING, WITH A CONTINUOUS PLIABLE MEMBER MORE POROUS THAN SAID UNCOATED FIBROUS WEB MATERIAL, SUBSTANTIALLY ALL OF THE CONTACTING MATERIAL AGAINST SAID SUBSTANTIAL PORTION OF A ROTATING DRUM SURFACE AT A PRESSURE OF AT LEAST ABOUT 5 P.S.I. AND AT LEAST AS GREAT AS THE VAPOR PRESSURE OF SAID VOLATILE LIQUID AT SAID TEMPERATURE OF THE HEATED DRUM SURFACE.
Claim 2
Dependent Claim
107 words
A CONTINUOUS PROCESS FOR DRYING AN UNCOATED FIBROUS WEB MATERIAL CONTAINING VOLATILE LIQUID COMPRISING THE COMBINATION OF SIMULTANEOUS STEPS OF (A) CONTACTING SAID UNCOATED FIBROUS WEB MATERIAL CONTINUOUSLY WITH A SUBSTANTIAL PORTION OF A ROTATING DRUM SURFACE HEATED TO A TEMPERATURE OF AT LEAST ABOUT 250*F., AND (B) PRESSING, WITH A CONTINUOUS PLIABLE MEMBER MORE POROUS THAN SAID UNCOATED FIBROUS WEB MATERIAL, SUBSTANTIALLY ALL OF THE CONTACTING MATERIAL AGAINST SAID SUBSTANTIAL PORTION OF A ROTATING DRUM SURFACE AT A PRESSURE OF AT LEAST ABOUT 5 P.S.I. AND AT LEAST AS GREAT AS THE VAPOR PRESSURE OF SAID VOLATILE LIQUID AT SAID TEMPERATURE OF THE HEATED DRUM SURFACE.
References Cited (Backward Citations)
US3110612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |