US3371983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prewetting cellulosic fabric before introduction to dehydrating solution of formaldehyde reactant in a continuous process
Assignee: Burlington Industries Inc
•
Filing: 1961-12-04
•
Granted: 1968-03-05
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Richard P Barber
- 👤 Vernon C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:24
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A CONTINUOUS PROCESS FOR INCREASING THE WET WRINKLE RECOVERY OF A CELLULOSIC FABRIC COMPRISING TREATING THE FABRIC WITH AN AQUEOUS MEDIUM IN WHICH WATER IS THE SOLE ESSENTIAL LIQUID UNTIL THE FABRIC CONTAINS 10-100% OF ITS OWN WEIGHT OF ADDED WATER, SUBSTANTIALLY IMMEDIATELY THEREAFTER PASSING THE WET FABRIC INTO A DEHYDRATING SOLUTION OF FORMALDEHYDE AT A TEMPERATURE UP TO 90*C. FOR A PERIOD OF UP TO 5 MINUTES WHEREBY THE FORMALDEHYDE REACTS WITH SAID FABRIC TO IMPROVE THE WET WRINKLE RECOVERY, WASHING THE THUS TREATED FABRIC WITH WATER AND THEN DRYING SAID FABRIC.
Claim 2
Dependent Claim
93 words
A CONTINUOUS PROCESS FOR INCREASING THE WET WRINKLE RECOVERY OF A CELLULOSIC FABRIC COMPRISING TREATING THE FABRIC WITH AN AQUEOUS MEDIUM IN WHICH WATER IS THE SOLE ESSENTIAL LIQUID UNTIL THE FABRIC CONTAINS 10-100% OF ITS OWN WEIGHT OF ADDED WATER, SUBSTANTIALLY IMMEDIATELY THEREAFTER PASSING THE WET FABRIC INTO A DEHYDRATING SOLUTION OF FORMALDEHYDE AT A TEMPERATURE UP TO 90*C. FOR A PERIOD OF UP TO 5 MINUTES WHEREBY THE FORMALDEHYDE REACTS WITH SAID FABRIC TO IMPROVE THE WET WRINKLE RECOVERY, WASHING THE THUS TREATED FABRIC WITH WATER AND THEN DRYING SAID FABRIC.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |