US2645818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making retractile articles
Assignee: Novacel SAS
•
Filing: 1947-07-31
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Granted: 1953-07-21
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Expires: 1967-07-31
Abstract
No abstract record available.
Inventors
- 👤 Drisch Nicolas
- 👤 Fays Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:36
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0096; B29L; B29L2031/00; B29L2031/56; B29L2031/565
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A METHOD OF SETTING UP IN RETRACTILE ARTICLES, SUCH AS CAPS AND BANDS, SUFFICIENT ELASTICITY AND EXTENSIBILITY WHILE IN THE MOIST OF GEL STATE TO PERMIT STRETCHING THEREOF AND THE AUTOMATIC RETURN TO A CONTRACTED STATE UPON RELEASE OF THE STRETCHING FORCE, WHICH COMPRISES IMPREGNATING A GEL RETRACTILE ARTICLE FORMED OF A WATER-INSOLUBLE POLYVINYL ACETAL WITH AN AQUEOUS SOLUTION CONTAINING 15 TO 30 PARTS OF DIACETIN OF GLYCERIN, AND MAINTAINING SAID ARTICLE IN THE MOIST OR GEL STATE UNTIL IT IS POSITIONED IN PLACE IN THE ULTIMATE USE THEREOF.
References Cited (Backward Citations)
GB468762A
Cited
US2112717A
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US2161561A
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US2184443A
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US2338787A
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US2236552A
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US2428527A
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FR843823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |