US3165374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of partially methylenating cellulose textiles
Assignee: Joseph Bancroft and Sons Co
•
Filing: 1961-02-17
•
Granted: 1965-01-12
•
Expires: 1981-02-17
Abstract
No abstract record available.
Inventors
- 👤 Henry R Hushebeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:52
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A PROCESS OF PARTIALLY METHYLENATING CELLULOSE TEXTILES INVOLVING IMPREGNATING THE TEXTILE WITH A METHYLENATING AGENT AND THEREAFTER CURING THE IMPREGNATED TEXTILE IN AN ACID ENVIRONMENT BY HEATING THE FABRIC TO TEMPERATURES ABOVE 250*F. TO BRING ABOUT THE REACTION OF THE CELLULOSE AND THE METHYLENATING AGENT, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE CURE IN THE PRESENCE OF A CATALYST THAT WILL, UPON SAID HEATING, FORM A RESIDUE IN THE TEXTILE THAT WILL PROVIDE THE TEXTILE WITH A PH AT LEAST TWO POINTS HIGHER THAN THE PH OF A PURE AQUEOUS SOLUTION OF THE CATALYST.
Claim 2
Dependent Claim
94 words
IN A PROCESS OF PARTIALLY METHYLENATING CELLULOSE TEXTILES INVOLVING IMPREGNATING THE TEXTILE WITH A METHYLENATING AGENT AND THEREAFTER CURING THE IMPREGNATED TEXTILE IN AN ACID ENVIRONMENT BY HEATING THE FABRIC TO TEMPERATURES ABOVE 250*F. TO BRING ABOUT THE REACTION OF THE CELLULOSE AND THE METHYLENATING AGENT, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE CURE IN THE PRESENCE OF A CATALYST THAT WILL, UPON SAID HEATING, FORM A RESIDUE IN THE TEXTILE THAT WILL PROVIDE THE TEXTILE WITH A PH AT LEAST TWO POINTS HIGHER THAN THE PH OF A PURE AQUEOUS SOLUTION OF THE CATALYST.
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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |