Patent US3356446A successfully refreshed from Google Patents.
US3356446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat setting fibrous cotton esters
Assignee: Individual
•
Filing: 1963-08-22
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Granted: 1967-12-05
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Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert S Cooper
- 👤 Alton L Murphy
- 👤 William G Sloan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:47
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/184; D06M13/192
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR IMPARTING IMPROVED WRINKLE RESISTANCE AND CREASE RETENTION TO A FIBROUS COTTON CELLULOSIC ESTER PREPARED BY ESTERIFYING COTTON FIBERS WITHOUT MATERIALLY CHANGING THE PHYSICAL APPEARANCE THEREOF AND HAVING A DEGREE OF ACYL SUBSTITUTION OF ABOUT FROM .7 TO 1.25, AND SAID ESTER BEING IN FABRIC FORM AND OF PREDETERMINED CONFIGURATION, WHICH COMPRISES APPLY DRY HEAT THERETO AT A TEMPERATURE OF ABOUT FROM 160 TO 250*C. FOR A PERIOD OF TIME OF ABOUT FROM 10 MINUTES TO 24 HOURS, THE HIGHER TEMPERATURE BEING USED FOR THE LOWER PERIODS OF TIME.
Claim 2
Dependent Claim
91 words
A PROCESS FOR IMPARTING IMPROVED WRINKLE RESISTANCE AND CREASE RETENTION TO A FIBROUS COTTON CELLULOSIC ESTER PREPARED BY ESTERIFYING COTTON FIBERS WITHOUT MATERIALLY CHANGING THE PHYSICAL APPEARANCE THEREOF AND HAVING A DEGREE OF ACYL SUBSTITUTION OF ABOUT FROM .7 TO 1.25, AND SAID ESTER BEING IN FABRIC FORM AND OF PREDETERMINED CONFIGURATION, WHICH COMPRISES APPLY DRY HEAT THERETO AT A TEMPERATURE OF ABOUT FROM 160 TO 250*C. FOR A PERIOD OF TIME OF ABOUT FROM 10 MINUTES TO 24 HOURS, THE HIGHER TEMPERATURE BEING USED FOR THE LOWER PERIODS OF TIME.
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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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |