US3154373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating cellulosic textiles with formaldehyde in vapor form
Assignee: Individual
•
Filing: 1962-04-02
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Granted: 1964-10-27
•
Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 John D Guthrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:11
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR TREATING A CELLULOSIC TEXTILE MATERIAL, SELECTED FROM THE GROUP CONSISTING OF COTTON, DEACETYLATED ACETATE RAYON, AND UNDELUSTERED VISCOSE RAYON, WHICH PROCESS COMPRISES EXPOSING THE CELLULOSIC TEXTILE MATERIAL IN AN INERT CLOSED CONTAINER TO THE VAPORS FROM A COMPOSITION CONTAINING ABOUT 0.5% TO 1.2% BY WEIGHT OF HCL MADE BY EXPOSING PARAFORMALDEHYDE TO VAPOR FROM CONCENTRATED HYDROCHLORIC ACID.
Claim 2
Dependent Claim
60 words
A PROCESS FOR TREATING A CELLULOSIC TEXTILE MATERIAL, SELECTED FROM THE GROUP CONSISTING OF COTTON, DEACETYLATED ACETATE RAYON, AND UNDELUSTERED VISCOSE RAYON, WHICH PROCESS COMPRISES EXPOSING THE CELLULOSIC TEXTILE MATERIAL IN AN INERT CLOSED CONTAINER TO THE VAPORS FROM A COMPOSITION CONTAINING ABOUT 0.5% TO 1.2% BY WEIGHT OF HCL MADE BY EXPOSING PARAFORMALDEHYDE TO VAPOR FROM CONCENTRATED HYDROCHLORIC ACID.
References Cited (Backward Citations)
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US2441859A
Cited
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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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |