US3525723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing agent for textile fibers derived from methanolysis of a vinyl acetate acrylamide copolymer
Assignee: Denka Co Ltd
•
Filing: 1967-11-03
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Granted: 1970-08-25
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Expires: 1987-11-03
Abstract
No abstract record available.
Inventors
- 👤 Shiro Masuda
- 👤 Kozo Konishi
- 👤 Masaaki Suzui
- 👤 Tetsuyuki Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:55
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/285
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) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |