US3394985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft polymerization reaction of polyamide filaments and acrylic acid promoted by hydrogen peroxide-formaldehyde sulfoxylate salt catalyst combination
Assignee: EIDP Inc
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Filing: 1965-09-02
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Granted: 1968-07-30
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Helmut H Froehlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:57
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/08; D06M14/12; D06M14/16
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) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |