Patent US3195174A successfully refreshed from Google Patents.
Patent US3543334A successfully refreshed from Google Patents.
US3543334A
Expired / Lapsed
US
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Apparatus for manufacturing thermoplastic films
Assignee: Mitsubishi Chemical Corp
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Filing: 1968-04-29
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Granted: 1970-12-01
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Expires: 1988-04-29
Abstract
No abstract record available.
Inventors
- 👤 Michio Sudo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:13
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/90; B29C48/908; B29C48/03; B29C48/09; B29C48/10; B29C48/14; B29C48/147; B29C48/1472; B29C48/901; B29C48/903; B29C48/905; B29C2791/00; B29C2791/004; B29C2791/006; B29C2791/007; B29C48/001; B29C48/0018; B29C48/0019; B29C48/13; B29C48/885; B29C48/911; B29C48/9115; B29C48/912; B29C48/9135; B29C48/9175; B29C48/919; B29L; B29L2023/00; B29L2023/001
Claims Analysis
Total Claims: 0
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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) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |