US3198652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating resin impregnated fibrous webs to prevent discoloration and resulting color stabilized webs
Assignee: Calico Printers Association Ltd
•
Filing: 1959-03-11
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Granted: 1965-08-03
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Expires: 1979-03-11
Abstract
No abstract record available.
Inventors
- 👤 William S Miller
- 👤 Henry M Duckworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:45
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; Y; Y10; Y10S; Y10S8/00; Y10S8/06; Y10T; Y10T442/00; Y10T442/20; Y10T442/259
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS OF TREATING A COTTOM FABIC FINISHED WITH A CURED ACETONE-FORMALDEHYDE RESIN TO PROTECT THE WEB AGAINST DISCOLORATION DURING STORAGE FOLLOWING EXPOSURE TO LIGHT WHICH COMPRISES IMPREGNATING BLEACHED COTTON FABRIC WITH AN AQUEOUS SOLUTION COMPRISING AN ACETONE-FORMALDEHYDE RESIN, DRYING THE IMPREGNATED FABRIC HEATING THE DRIED FABRIC IN AIR AT A TEMPERATURE BETWEEN ABOUT 127* TO 143*C. TO CURE THE RESIN AND SET IT UPON THE FABRIC, THEREAFTER IMMERSING THE FABRID IN AN AQUEOSU ALKALINE HYDROGEN PEROXIDE SOLUTION CONTAINING ABOUT 0.02 TO 2.0 PERCENT BY WEIGHT OF AVAILABLE OXYGEN HAVING A TEMPERATURE BETWEEN ABOUT 15* AND 100*C. FOR BETWEEN ABOUT 10 TO 60 MINUTES, REMOVING THE FABRIC FROM SAID HYDROGEN PEROXIDE SOLUTION, WASHING THE FABRIC FREE OF OXIDIZING MATERIAL AND DRYING THE TREATED FABRIC.
Claim 2
Dependent Claim
124 words
A PROCESS OF TREATING A COTTOM FABIC FINISHED WITH A CURED ACETONE-FORMALDEHYDE RESIN TO PROTECT THE WEB AGAINST DISCOLORATION DURING STORAGE FOLLOWING EXPOSURE TO LIGHT WHICH COMPRISES IMPREGNATING BLEACHED COTTON FABRIC WITH AN AQUEOUS SOLUTION COMPRISING AN ACETONE-FORMALDEHYDE RESIN, DRYING THE IMPREGNATED FABRIC HEATING THE DRIED FABRIC IN AIR AT A TEMPERATURE BETWEEN ABOUT 127* TO 143*C. TO CURE THE RESIN AND SET IT UPON THE FABRIC, THEREAFTER IMMERSING THE FABRID IN AN AQUEOSU ALKALINE HYDROGEN PEROXIDE SOLUTION CONTAINING ABOUT 0.02 TO 2.0 PERCENT BY WEIGHT OF AVAILABLE OXYGEN HAVING A TEMPERATURE BETWEEN ABOUT 15* AND 100*C. FOR BETWEEN ABOUT 10 TO 60 MINUTES, REMOVING THE FABRIC FROM SAID HYDROGEN PEROXIDE SOLUTION, WASHING THE FABRIC FREE OF OXIDIZING MATERIAL AND DRYING THE TREATED FABRIC.
References Cited (Backward Citations)
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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) | 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 |