Patent US2734004A successfully refreshed from Google Patents.
US2734004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble n-methylol polypyrroli-
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:04
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/48; C08G69/50; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/59; D06M15/595; Y; Y10; Y10T; Y10T442/00; Y10T442/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
WATER-SOLUBLE N-METHYLOL DERIVATIVES OF POLYPYRROLIDONE.
Claim 2
Dependent Claim
5 words
WATER-SOLUBLE N-METHYLOL DERIVATIVES OF POLYPYRROLIDONE.
Claim 3
Dependent Claim
37 words
A PROCESS FOR IMPARTING A SUBSTANTIALLY PERMANENT FINISH TO TEXTILE FABRIC WHICH COMPRISES IMPREGNATING SAID FABRIC WITH AN AQUEOUS SOLUTION OF AN N-METHYLOL DERIVATIVE OF POLYPYRROLIDONE AND THEREAFTER DRYING THE IMPREGNATED FABRIC TO INSOLUBILIZE SAID N-METHYLOL DERIVATIVE.
Claim 4
Dependent Claim
37 words
A PROCESS FOR IMPARTING A SUBSTANTIALLY PERMANENT FINISH TO TEXTILE FABRIC WHICH COMPRISES IMPREGNATING SAID FABRIC WITH AN AQUEOUS SOLUTION OF AN N-METHYLOL DERIVATIVE OF POLYPYRROLIDONE AND THEREAFTER DRYING THE IMPREGNATED FABRIC TO INSOLUBILIZE SAID N-METHYLOL DERIVATIVE.
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) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |