US3068529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the dimensional stability of regenerated cellulose films
Assignee: EIDP Inc
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Filing: 1960-09-20
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Granted: 1962-12-18
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Expires: 1980-09-20
Abstract
No abstract record available.
Inventors
- 👤 Kane William Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:31
CPC Classifications
B; B29; B29C; B29C71/00; B29C59/00; B29D; B29D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A PROCESS FOR IMPROVING THE DIMENSIONAL STABILITY OF REGENERATED CELLULOSE FILM, THE IMPROVEMENT WHICH CONSISTS IN: (1) DRYING SOFTENED GEL REGENERATED CELLULOSE FILM TO ABOUT 100 TO 120% MOISTURE WHILE APPLYING 2 TO 4% DRAW, (2) FURTHER DRYING THE SAID FILM TO ABOUT 2.5 TO 60% MOISTURE WHILE PERMITTING ABOUT 1.5 TO 2.5% RELAXATION AND (3) COMPLETING SAID DRYING TO ABOUT 3.0 TO 7.5% MOISTURE WHILE APPLYING ABOUT 0.5 TO 1.0% DRAW.
Claim 2
Dependent Claim
73 words
IN A PROCESS FOR IMPROVING THE DIMENSIONAL STABILITY OF REGENERATED CELLULOSE FILM, THE IMPROVEMENT WHICH CONSISTS IN: (1) DRYING SOFTENED GEL REGENERATED CELLULOSE FILM TO ABOUT 100 TO 120% MOISTURE WHILE APPLYING 2 TO 4% DRAW, (2) FURTHER DRYING THE SAID FILM TO ABOUT 2.5 TO 60% MOISTURE WHILE PERMITTING ABOUT 1.5 TO 2.5% RELAXATION AND (3) COMPLETING SAID DRYING TO ABOUT 3.0 TO 7.5% MOISTURE WHILE APPLYING ABOUT 0.5 TO 1.0% DRAW.
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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |