Patent US3465072A successfully refreshed from Google Patents.
US3465072A
Expired / Lapsed
US
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Method for forming biaxially oriented film
Assignee: WR Grace and Co
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Filing: 1966-10-20
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Granted: 1969-09-02
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Expires: 1986-10-20
Abstract
No abstract record available.
Inventors
- 👤 Razmic S Gregorian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:39
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/003; B29D; B29D7/00; B29D7/01; B29C48/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2452080A
Cited
US3022543A
Cited
US3090998A
Cited
US2979777A
Cited
US3193547A
Cited
US3337663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |