Patent US3966397A successfully refreshed from Google Patents.
Patent US3198660A successfully refreshed from Google Patents.
US3198660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of cellulosic textile fabrics with bisformamide-formaldehyde adducts
Assignee: Individual
•
Filing: 1962-06-20
•
Granted: 1965-08-03
•
Expires: 1982-06-20
Abstract
No abstract record available.
Inventors
- 👤 Sidney L Vail
- 👤 Jr John G Frick
- 👤 Wilson A Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:31
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10S; Y10S156/00; Y10S156/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR PRODUCING A WRINKLE RESISTANT CELLULOSIC TEXTILE MATERIAL THAT IS RESISTANT TO ACIDIC AND TO BASIC HYDROLYSIS COMPRISING IMPREGNATING A CELLULOSIC TEXTILE MATERIAL WITH AN AQUEOUS MATERIAL CONTAINING FROM 5 TO 20% BY WEIGHT OF THE REACTION PRODUCT OF AT LEAST 2 MOLES OF FORMALDEHYDE AND 1 MOLE OF A BISFORMAMIDE REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
57 words
A PROCESS FOR PRODUCING A WRINKLE RESISTANT CELLULOSIC TEXTILE MATERIAL THAT IS RESISTANT TO ACIDIC AND TO BASIC HYDROLYSIS COMPRISING IMPREGNATING A CELLULOSIC TEXTILE MATERIAL WITH AN AQUEOUS MATERIAL CONTAINING FROM 5 TO 20% BY WEIGHT OF THE REACTION PRODUCT OF AT LEAST 2 MOLES OF FORMALDEHYDE AND 1 MOLE OF A BISFORMAMIDE REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
US2562161A
Cited
US2765336A
Cited
US2819307A
Cited
US2985546A
Cited
US2985544A
Cited
US3024135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |