Patent US3510552A successfully refreshed from Google Patents.
US3510552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biaxially drawing polyamide film
Assignee: Nippon Rayon Co Ltd
•
Filing: 1966-09-12
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Granted: 1970-05-05
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Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 Motohiro Tsuruta
- 👤 Mutsuo Kuga
- 👤 Takeshi Mashimo
- 👤 Wakuo Matsumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:02
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/10; B29C55/12; B29C55/16; B29C71/00; B29K; B29K2077/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2823421A
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US2836517A
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US2968065A
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GB954204A
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US3161711A
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US3256379A
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US3257489A
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US3354023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |