Patent US3313646A successfully refreshed from Google Patents.
US3313646A
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Method and an apparatus for subjecting a film to a heat treatment, and the coated film thus treated
Assignee: Algemene Kunstzyde Unie N V
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Filing: 1963-05-16
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Granted: 1967-04-11
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Expires: 1983-05-16
Abstract
No abstract record available.
Inventors
- 👤 Roelof Van Zalinge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:20
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/04; B29; B29D; B29D7/00; B29C; B29C71/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A METHOD FOR SUBJECTING A COATED FILM BEARING A SOLVENT TO A HEAT TREATMENT IN WHICH THE FILM IS GUIDED VERTICALLY UPWARDS THROUGH AN INTEGRAL SHAFT SEALED FROM THE AMBIENT AT ITS LOWER END AND THROUGH WHICH A HEATED GAS IS CIRCULATED, THE IMPROVEMENT COMPRISING PASSING SAID FILM BEFORE IT LEAVES THE SHAFT THROUGH A FIRST CONSTRICTION AND THEN THROUGH AN ADJUSTABLE CONSTRICTION, AND PASSING COOLING GAS UNDER DEVATED PRESSURE INTO SAID SHAFT IN A ZONE BETWEEN THE FIRST AND ADJUSTABLE CONSTRICTIONS AND
Claim 2
Dependent Claim
84 words
IN A METHOD FOR SUBJECTING A COATED FILM BEARING A SOLVENT TO A HEAT TREATMENT IN WHICH THE FILM IS GUIDED VERTICALLY UPWARDS THROUGH AN INTEGRAL SHAFT SEALED FROM THE AMBIENT AT ITS LOWER END AND THROUGH WHICH A HEATED GAS IS CIRCULATED, THE IMPROVEMENT COMPRISING PASSING SAID FILM BEFORE IT LEAVES THE SHAFT THROUGH A FIRST CONSTRICTION AND THEN THROUGH AN ADJUSTABLE CONSTRICTION, AND PASSING COOLING GAS UNDER DEVATED PRESSURE INTO SAID SHAFT IN A ZONE BETWEEN THE FIRST AND ADJUSTABLE CONSTRICTIONS AND
References Cited (Backward Citations)
US1841485A
Cited
US1947476A
Cited
US2588584A
Cited
US2811409A
Cited
US3058840A
Cited
US3183604A
Cited
US3231985A
Cited
US3250641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |