US3399250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film comprising polyethylene and an ethylene-vinyl acetate copolymer
Assignee: WR Grace and Co
•
Filing: 1963-03-12
•
Granted: 1968-08-27
•
Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 Charles C Kirk
- 👤 Razmic S Gregorian
- 👤 Frank X Werber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815; C08L2207/00; C08L2207/06; C08L2207/07; C08L23/0846; C08L23/0853; C08L2312/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |