Patent US2236273A successfully refreshed from Google Patents.
Patent US2658843A successfully refreshed from Google Patents.
US2658843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rendering regenerated cellulose resistant to sticking and article produced
Assignee: Akzo Nobel UK PLC
•
Filing: 1950-07-25
•
Granted: 1953-11-10
•
Expires: 1970-07-25
Abstract
No abstract record available.
Inventors
- 👤 William O Brillhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:28
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; C08J7/046; C08J2301/00; C08J2301/06; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A METHOD OF RENDERING REGENERATED CELLULOSE FILM RESISTANT TO STICKING WHICH COMPRISES TREATING SAID FILM WHILE IN THE WET GEL STATE WITH AN AQUEOUS BATH CONTAINING A HYDROLYZED ORGANIC ESTER OF SILICIC ACID AND A COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Independent Claim
40 words
A METHOD OF RENDERING REGENERATED CELLULOSE FILM RESISTANT TO STICKING WHICH COMPRISES TREATING SAID FILM WHILE IN THE WET GEL STATE WITH AN AQUEOUS BATH CONTAINING A HYDROLYZED ORGANIC ESTER OF SILICIC ACID AND A COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2243682A
Cited
US2042702A
Cited
US2008815A
Cited
US2206046A
Cited
US2226554A
Cited
US2375261A
Cited
US2408656A
Cited
US2527329A
Cited
US2431873A
Cited
US2443512A
Cited
US2524358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |