Patent US2717823A successfully refreshed from Google Patents.
US2717823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing of polyacrylonitrile fibers
Assignee: Purdue Research Foundation
•
Filing: 1951-01-06
•
Granted: 1955-09-13
•
Expires: 1971-01-06
Abstract
No abstract record available.
Inventors
- 👤 Edmund W Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:55
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; D06P3/00; D06P3/70; D06P3/72; D06P5/00; D06P5/20; D06P5/2044; D06P5/2055; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE METHOD OF DYEING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ORLON FILAMENTS, STAPLES, YARNS AND FABRICS COMPRISING TREATING THE ORLON IN AN AQUEOUS DYEBATH CONTAINING A MONOAZO DYE FORMED BY COUPLING A DIAZOTIZED AMINE SELECTED FROM THE GROUP CONSISTING OF ANILINE, ANISIDINE AND PICRAMIC ACID WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF RESORCINOL AND PHLOROGLUCINOL.
Claim 2
Independent Claim
59 words
THE METHOD OF DYEING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ORLON FILAMENTS, STAPLES, YARNS AND FABRICS COMPRISING TREATING THE ORLON IN AN AQUEOUS DYEBATH CONTAINING A MONOAZO DYE FORMED BY COUPLING A DIAZOTIZED AMINE SELECTED FROM THE GROUP CONSISTING OF ANILINE, ANISIDINE AND PICRAMIC ACID WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF RESORCINOL AND PHLOROGLUCINOL.
References Cited (Backward Citations)
US2543316A
Cited
US2141589A
Cited
US2180012A
Cited
US2191040A
Cited
US2359735A
Cited
GB568037A
Cited
US2424778A
Cited
US2461612A
Cited
US2512969A
Cited
US2532437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |