US2621135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antisticking cellulose pellicles
Assignee: Akzo Nobel UK PLC
•
Filing: 1949-10-06
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Granted: 1952-12-09
•
Expires: 1969-10-06
Abstract
No abstract record available.
Inventors
- 👤 William O Brillhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:22
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; C08J7/046; C08J2301/00; C08J2301/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
AS AN ARTICLE OF MANUFACTURE A SMOOTH, NONFIBROUS, NON-POROUS, NON-STICKING FILM HAVING ALL OF ITS SURFACES EXPOSED AND SUFFUSED WITH A COMPOUND SELECTED FROM THE GROUP HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
30 words
AS AN ARTICLE OF MANUFACTURE A SMOOTH, NONFIBROUS, NON-POROUS, NON-STICKING FILM HAVING ALL OF ITS SURFACES EXPOSED AND SUFFUSED WITH A COMPOUND SELECTED FROM THE GROUP HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
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Cited
US2168253A
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US2206046A
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US2288413A
Cited
US2375261A
Cited
US2221383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |