US2930717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-blocking pellicle and method for making the same
Assignee: Akzo Nobel UK PLC
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Filing: 1957-02-01
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Granted: 1960-03-29
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Expires: 1977-02-01
Abstract
No abstract record available.
Inventors
- 👤 Edward J Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:25
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; C08J7/046; C08J7/056; C08J2301/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD OF PREPARING NON-BLOCKONG NON-FIBROUS CELLULOSIC PELLICLES HAVING IMPROVED SLIP CHARACTERISTICS COMPRISING TREATING SAID PELLICLES WITH AN AQUEOUS SOLUTION CONTAINING 2 TO 15% BY WEIGHT OF A HYGROSCOPIC PLASTICIZING MATERIAL AND A 0.008 TO 0.17 MOLAR AQUEOUS SOLUTION OF A METAL SALT OF AN ALKANE ORTHOSILICONATE REPRESENTED BY THE FORMULA
Claim 2
Independent Claim
51 words
A METHOD OF PREPARING NON-BLOCKONG NON-FIBROUS CELLULOSIC PELLICLES HAVING IMPROVED SLIP CHARACTERISTICS COMPRISING TREATING SAID PELLICLES WITH AN AQUEOUS SOLUTION CONTAINING 2 TO 15% BY WEIGHT OF A HYGROSCOPIC PLASTICIZING MATERIAL AND A 0.008 TO 0.17 MOLAR AQUEOUS SOLUTION OF A METAL SALT OF AN ALKANE ORTHOSILICONATE REPRESENTED BY THE FORMULA
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) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |