US3374550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for drying paper
Assignee: General Electric Canada Co
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Filing: 1966-10-20
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Granted: 1968-03-26
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Expires: 1986-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jean D Belleau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:08
CPC Classifications
D; D21; D21F; D21F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD FOR DRYING A CONTINUOUSLY MOVING WEB OF NEWLY FORMED PAPER HAVING A HIGH WATER CONTENT COMPRISING THE STEPS OF: ADVANCING THE WEB OF PAPER TOWARDS A DRYING STATION, INTRODUCING INTO THE WEB JUST PRIOR TO THE DRYING STATION A SUBSTITUTE LIQUID MORE VOLATILE THAN WATER SO THAT THE SAID LIQUID REPLACES A PORTION OF THE WATER ORIGINALLY PRESENT IN THE PAPER, APPLYING A VACUUM TO THE WEB SIMULTANEOUSLY WITH THE ADDITION OF THE MORE VOLATILE LIQUID TO REMOVE THE EXCESS MORE VOLATILE LIQUID AND WATER FROM THE WEB, AND SUBSEQUENTLY ADVANCING THE WEB TO A DRYING STATION AND REMOVING SUBSTANTIALLY ALL OF THE REMAINDER OF THE MOISTURE FROM THE WEB.
Claim 2
Independent Claim
112 words
A METHOD FOR DRYING A CONTINUOUSLY MOVING WEB OF NEWLY FORMED PAPER HAVING A HIGH WATER CONTENT COMPRISING THE STEPS OF: ADVANCING THE WEB OF PAPER TOWARDS A DRYING STATION, INTRODUCING INTO THE WEB JUST PRIOR TO THE DRYING STATION A SUBSTITUTE LIQUID MORE VOLATILE THAN WATER SO THAT THE SAID LIQUID REPLACES A PORTION OF THE WATER ORIGINALLY PRESENT IN THE PAPER, APPLYING A VACUUM TO THE WEB SIMULTANEOUSLY WITH THE ADDITION OF THE MORE VOLATILE LIQUID TO REMOVE THE EXCESS MORE VOLATILE LIQUID AND WATER FROM THE WEB, AND SUBSEQUENTLY ADVANCING THE WEB TO A DRYING STATION AND REMOVING SUBSTANTIALLY ALL OF THE REMAINDER OF THE MOISTURE FROM THE WEB.
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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |