US2616869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning solutions of vinyl chloride polymer in a solvent mixture of tetrahydrofurane and a nitrile
Assignee: Glanzstoff AG
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Filing: 1951-04-18
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Granted: 1952-11-04
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Expires: 1971-04-18
Abstract
No abstract record available.
Inventors
- 👤 Heisenberg Erwin
- 👤 Kleine Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:16
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; D; D01; D01F; D01F6/00; D01F6/02; D01F6/08; D01F6/10; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A LIQUID COMPOSITION OF MATTER WHICH CAN BE SPUN TO FORM THREADS AND THE LIKE AND WHICH CAN BE CAST TO FORM FILMS, COMPRISING A VINYL CHLORIDE POLYMER AS SOLUTE IN SOLUTION IN TETRAHYDROFURANE AS SOLVENT, SAID SOLVENT HAVING ADMIXED THEREWITH FROM ABOUT 10% TO ABOUT 50% BY WEIGHT OF THE MIXTURE, OF A NITRILE WHICH CAN DISSOLVE POLYACRYLONITRILE COMPLETELY BUT WHICH DOES NOT BY ITSELF GIVE VINYL CHLORIDE POLYMER SOLUTIONS WHICH CAN BE SPUN.
Claim 2
Dependent Claim
75 words
A LIQUID COMPOSITION OF MATTER WHICH CAN BE SPUN TO FORM THREADS AND THE LIKE AND WHICH CAN BE CAST TO FORM FILMS, COMPRISING A VINYL CHLORIDE POLYMER AS SOLUTE IN SOLUTION IN TETRAHYDROFURANE AS SOLVENT, SAID SOLVENT HAVING ADMIXED THEREWITH FROM ABOUT 10% TO ABOUT 50% BY WEIGHT OF THE MIXTURE, OF A NITRILE WHICH CAN DISSOLVE POLYACRYLONITRILE COMPLETELY BUT WHICH DOES NOT BY ITSELF GIVE VINYL CHLORIDE POLYMER SOLUTIONS WHICH CAN BE SPUN.
References Cited (Backward Citations)
US2529449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |