US3264054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for crosslinking cellulosic textile and paper materials with gaseous formaldehyde
Assignee: Individual
•
Filing: 1963-02-08
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Granted: 1966-08-02
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Expires: 1983-02-08
Abstract
No abstract record available.
Inventors
- 👤 Robert M Reinhardt
- 👤 Reginald A Fujimoto
- 👤 John D Reid
- 👤 Jean D Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:30
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROCESS FOR CROSSLINKING A CELLULOSE TEXTILE OR A CELLULOSIC PAPER MATERIAL WITH FORMALDEHYDE WHICH PROCESS CONSISTS OF EXPOSING AT ATMOSPHERIC PRESSURE A CELLULOSIC TEXTILE OR A CELLULOSIC PAPER MATERIAL THAT CONTAINS ABOUT FROM 6% TO 10% BY WEIGHT OF MOISTURE TO AN ATMOSPHERE CONTAINING FROM ABOUT 0.004 TO 0.016 MOLE OF GASEOUS FORMALDEHYDE PER LITER AND ABOUT FROM 0.25% TO 8% BY WEIGHT, BASED ON THE WEIGHT OF THE MATERIAL BEING TREATED, OF GASEOUS HYDROGEN CHLORIDE AT A TEMPERATURE OF ABOUT FROM 20* C. TO 80* C. FOR A PERIOD OF FROM ABOUT ONE MINUTE TO THREE HOURS WITH THE CONCOMITANT PROVISO THAT DURING EXPOSURE OF THE SAID CELLULOSIC MATERIAL TO THE GASEOUS FORMALDEHYDE ATMOSPHERE, ADDITIONAL GASEOUS FORMALDEHYDE BE FURNISHED AT THE RATE OF ABOUT FROM 0.008 TO 0.003 MOLE PER LITER PER HOUR.
Claim 2
Dependent Claim
135 words
A PROCESS FOR CROSSLINKING A CELLULOSE TEXTILE OR A CELLULOSIC PAPER MATERIAL WITH FORMALDEHYDE WHICH PROCESS CONSISTS OF EXPOSING AT ATMOSPHERIC PRESSURE A CELLULOSIC TEXTILE OR A CELLULOSIC PAPER MATERIAL THAT CONTAINS ABOUT FROM 6% TO 10% BY WEIGHT OF MOISTURE TO AN ATMOSPHERE CONTAINING FROM ABOUT 0.004 TO 0.016 MOLE OF GASEOUS FORMALDEHYDE PER LITER AND ABOUT FROM 0.25% TO 8% BY WEIGHT, BASED ON THE WEIGHT OF THE MATERIAL BEING TREATED, OF GASEOUS HYDROGEN CHLORIDE AT A TEMPERATURE OF ABOUT FROM 20* C. TO 80* C. FOR A PERIOD OF FROM ABOUT ONE MINUTE TO THREE HOURS WITH THE CONCOMITANT PROVISO THAT DURING EXPOSURE OF THE SAID CELLULOSIC MATERIAL TO THE GASEOUS FORMALDEHYDE ATMOSPHERE, ADDITIONAL GASEOUS FORMALDEHYDE BE FURNISHED AT THE RATE OF ABOUT FROM 0.008 TO 0.003 MOLE PER LITER PER HOUR.
References Cited (Backward Citations)
US3154373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |