US3011917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing permanently stiffened textiles
Assignee: Dow Chemical Co
•
Filing: 1956-02-16
•
Granted: 1961-12-05
•
Expires: 1976-02-16
Abstract
No abstract record available.
Inventors
- 👤 Robert R Dreisbach
- 👤 John L Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/227; D06M15/233; D06M15/356; D06M15/3562; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2361; Y10T442/2402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD WHICH COMPRISES IMPREGNATING A NORMALLY SOFT AND PLIABLE COTTON FABRIC WITH A POLYMERIC PROTON ACCEPTOR AND AN ORGANIC POLYELECTROLYTE PROTON DONOR, DRYING THE FABRIC AFTER EACH TREATMENT WITH SUCH MATERIALS, AND HEATING THE FABRIC TO SET THE IMPREGNANTS THEREIN AND TO STIFFEN THE FABRIC PERMANENTLY.
Claim 2
Independent Claim
47 words
A METHOD WHICH COMPRISES IMPREGNATING A NORMALLY SOFT AND PLIABLE COTTON FABRIC WITH A POLYMERIC PROTON ACCEPTOR AND AN ORGANIC POLYELECTROLYTE PROTON DONOR, DRYING THE FABRIC AFTER EACH TREATMENT WITH SUCH MATERIALS, AND HEATING THE FABRIC TO SET THE IMPREGNANTS THEREIN AND TO STIFFEN THE FABRIC PERMANENTLY.
References Cited (Backward Citations)
US2072465A
Cited
US2561215A
Cited
US2614093A
Cited
US2468716A
Cited
US2468086A
Cited
US2717887A
Cited
US2794010A
Cited
US2807597A
Cited
US2765228A
Cited
US2832748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |