US2721150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated cellulosic pellicles and methods of producing the same
Assignee: Akzo Nobel UK PLC
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Filing: 1952-12-12
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Granted: 1955-10-18
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Expires: 1972-12-12
Abstract
No abstract record available.
Inventors
- 👤 William G Grantham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:03
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/046; C08J7/056; C08J2301/00; C08J2301/06; C08J2427/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
AN ARTICLE OF MANUFACTURE COMPRISING A NON-FIBROUS CELLULOSIC PELLICLE CARRYING ON ITS SURFACE DISCRETE, FINELYDIVIDED PARTICLES OF A COPOLYMER OF FROM 60 PER CENT TO 95 PER CENT OF VINYLIDENE CHLORIDE AND FROM 5 PER CENT TO 40 PER CENT OF VINYL CHLORIDE.
Claim 2
Dependent Claim
43 words
AN ARTICLE OF MANUFACTURE COMPRISING A NON-FIBROUS CELLULOSIC PELLICLE CARRYING ON ITS SURFACE DISCRETE, FINELYDIVIDED PARTICLES OF A COPOLYMER OF FROM 60 PER CENT TO 95 PER CENT OF VINYLIDENE CHLORIDE AND FROM 5 PER CENT TO 40 PER CENT OF VINYL CHLORIDE.
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) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |