US3606993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Durable press cotton textile products produced conducting graft copolymerization process followed by cross-linking with dmdheu
Assignee: United States Department of Agriculture
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Filing: 1969-07-18
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Granted: 1971-09-21
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Expires: 1989-07-18
Abstract
Abstract This invention relates to a process for the preparation of durable-press cellulosic products. More particularly, this invention relates to a multistep process for the preparation of durable-press cellulosic products by a free radical initiated graft copolymerization process followed by a normal cross-linking process to yield products with high wash-wear ratings and high wrinkle recovery angles.
Inventors
- 👤 Jett C Arthur Jr
- 👤 James A Harris
- 👤 Trinidad Mares
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:49
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/18; D06M14/20; D06M14/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
The product produced by the process of claim 1.
References Cited (Backward Citations)
US3254939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |