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Patent US3635901A successfully refreshed from Google Patents.
US3635901A
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Process and apparatus for continuously polycondensing or polymerizing monomers
Assignee: CHATILLON ITALIANA FIBRE
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Filing: 1969-07-23
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Granted: 1972-01-18
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Expires: 1989-07-23
Abstract
Abstract THERE IS PROVIDED A PROCESS FOR CONTINOUSLY PRODUCING MACROMOLECULAR PRODUCTS USEFUL IN THE MANUFACTURE OF FIBERS AND FILMS BY PLOLYCONDENSATION OR POLYMERIZATION OF MONOMERS, AND CHARACTERIZED BY DISTRIBUTING A THIN FILM OF POLYCONDENSABLE OR POLYMERIZABLE MATERIAL FROM A SUPPLY THEROF ONTO CONTROLLABLY LHEATED CYLINDRICAL SURFACE, CAUSING THE THIN FILM OR LAYER TO MOVE DOWNWARDLY ALONG THE SURFACE AS A THIN FILM TO A DISCHARGE ZONE, I.E. THE MATERIAL IN SUCH A CONDTION IS OUT OF CONTACT WITH A BULK BODY OF THE MATERIAL.
Inventors
- 👤 Federico Urgesi
- 👤 Horst Rothert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:18
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; B; B01; B01F; B01F27/00; B01F27/80; B01F35/00; B01F35/71; B01F35/712; B01J; B01J10/00; B01J10/02; B01J19/00; B01J19/18; C08G63/00; C08G63/78; C08G63/785; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00168; B01J2219/18; B01J2219/185
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |