US3177093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating cellulose textile material and the treated material
Assignee: Wyeth Holdings LLC
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Filing: 1962-06-06
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Granted: 1965-04-06
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Expires: 1982-06-06
Abstract
No abstract record available.
Inventors
- 👤 Jr William Julius Van Loo
- 👤 O'brien Samuel James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:31
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2971; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2393; Y10T442/2762; Y10T442/277; Y10T442/2828; Y10T442/2852
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF TREATING CELLULOSE TEXTILE MATERIAL WHEREBY HIGH TENSILE STRENGTH AND WRINGLE RECOVERY ARE OBTAINED, WHICH COMPRISES APPLYING THERETO, FROM AN AQUEOUS SOLUTION, A FORMALDEHYDE CONDENSATE OF A 5-MEMBERED CYCLIC UREA AND A ZINC SALT OF AN INORGANIC ACID AS A CATALYST THEREFOR, AND IMMEDIATELY, WITHOUT INTERMEDIATE DRYING, WET CURING SAID CYCLIC UREA IN AN ATMOSPHERE OF WET STEAM MAINTAINING THE TEXTILE MATERIAL IN THE WET STATE UNTIL COMPLETION OF THE CURE AND THEREAFTER DRYING THE FABRIC.
Claim 2
Independent Claim
78 words
A METHOD OF TREATING CELLULOSE TEXTILE MATERIAL WHEREBY HIGH TENSILE STRENGTH AND WRINGLE RECOVERY ARE OBTAINED, WHICH COMPRISES APPLYING THERETO, FROM AN AQUEOUS SOLUTION, A FORMALDEHYDE CONDENSATE OF A 5-MEMBERED CYCLIC UREA AND A ZINC SALT OF AN INORGANIC ACID AS A CATALYST THEREFOR, AND IMMEDIATELY, WITHOUT INTERMEDIATE DRYING, WET CURING SAID CYCLIC UREA IN AN ATMOSPHERE OF WET STEAM MAINTAINING THE TEXTILE MATERIAL IN THE WET STATE UNTIL COMPLETION OF THE CURE AND THEREAFTER DRYING THE 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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |