US3551540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous production of uniaxially and biaxially oriented films
Assignee: WR Grace and Co
•
Filing: 1967-11-24
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Granted: 1970-12-29
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Expires: 1987-11-24
Abstract
No abstract record available.
Inventors
- 👤 Giorgio Lodovico Pellicciari
- 👤 Ugo Lodovico Frisinghelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:55
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/06; B29C61/08; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/25; B29C48/88; B29C48/885; B29C48/89; B29C48/90; B29C48/901; B29C48/903; B29C48/91; B29C48/911; B29C48/9115; B29C48/912; B29C48/9135; B29C48/914; B29C55/00; B29C55/02; B29C55/10; B29C55/12; B29C55/14; B29C55/146; B29C61/003; B29C48/001; B29C48/0018; B29C48/0019; B29C48/919; B29K; B29K2027/00; B29K2027/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |