US3189404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of cellulosic fibre fabrics
Assignee: Toyobo Co Ltd
•
Filing: 1961-10-03
•
Granted: 1965-06-15
•
Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Takizaki Iwao
- 👤 Okito Juta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:39
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127; Y; Y10; Y10S; Y10S8/00; Y10S8/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PROCESS OF TREATING CELLULOSIC FIBER-CONTAINING FABRIC TO IMPROVE THE CREASE AND WRINKLE RESISTANCE THEREOF, WHICH COMPRISES PRETREATING SAID FABRIC WITH RESIN SO THAT THE RESIN IS DEPOSITED ON THE FABRIC IN AN AMOUNT OF FROM 0.05 TO 3.0% BY WEIGHT BASED ON THE FABRIC, IMMERSING THE RESULTANT FABRIC FOR 1 TO 3 SECONDS IN AN AQUEOUS SOLUTION CONTAINING SULFURIC ACID IN A CONCENTRATION OF FROM 30 TO 60%, BASED ON THE WEIGHT OF THE AQUEOUS SOLUTION, AND FORMALDEHYDE IN CONCENTRATION OF FROM 5 TO 20%, BASED ON THE WEIGHT OF THE AQUEOUS SOLUTION, THE TEMPERATURE OF SAID SOLUTION BEING MAINTAINED AT, A TEMPERATURE BELOW 40*C., REMOVING THE FABRIC AFTER 1 TO 3 SECONDS ADN LEAVING THE FABRIC IN CONTACT WITH AIR FOR FROM 30 SECONDS TO2 MINUTES, AND THEN IMMEDIATELY WASHING AND DRYING SAID FABRIC.
Claim 2
Dependent Claim
136 words
A PROCESS OF TREATING CELLULOSIC FIBER-CONTAINING FABRIC TO IMPROVE THE CREASE AND WRINKLE RESISTANCE THEREOF, WHICH COMPRISES PRETREATING SAID FABRIC WITH RESIN SO THAT THE RESIN IS DEPOSITED ON THE FABRIC IN AN AMOUNT OF FROM 0.05 TO 3.0% BY WEIGHT BASED ON THE FABRIC, IMMERSING THE RESULTANT FABRIC FOR 1 TO 3 SECONDS IN AN AQUEOUS SOLUTION CONTAINING SULFURIC ACID IN A CONCENTRATION OF FROM 30 TO 60%, BASED ON THE WEIGHT OF THE AQUEOUS SOLUTION, AND FORMALDEHYDE IN CONCENTRATION OF FROM 5 TO 20%, BASED ON THE WEIGHT OF THE AQUEOUS SOLUTION, THE TEMPERATURE OF SAID SOLUTION BEING MAINTAINED AT, A TEMPERATURE BELOW 40*C., REMOVING THE FABRIC AFTER 1 TO 3 SECONDS ADN LEAVING THE FABRIC IN CONTACT WITH AIR FOR FROM 30 SECONDS TO2 MINUTES, AND THEN IMMEDIATELY WASHING AND DRYING SAID FABRIC.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |