Patent US3533984A successfully refreshed from Google Patents.
US3533984A
Expired / Lapsed
US
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Process for producing polyamide containing pigment
Assignee: Nippon Rayon Co Ltd
•
Filing: 1966-05-24
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Granted: 1970-10-13
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Expires: 1986-05-24
Abstract
No abstract record available.
Inventors
- 👤 Masashi Yamamoto
- 👤 Akira Hanawa
- 👤 Hiroyuki Uejima
- 👤 Toshimi Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:04
CPC Classifications
C; C08; C08G; C08G85/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB767897A
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US2884410A
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US2925397A
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US2846332A
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GB835920A
Cited
GB910642A
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US3004056A
Cited
US3308161A
Cited
US3279974A
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US3380927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |