US3134636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filamentary material
Assignee: Celanese Corp
•
Filing: 1961-02-23
•
Granted: 1964-05-26
•
Expires: 1981-02-23
Abstract
No abstract record available.
Inventors
- 👤 Singleton Robert William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:48
CPC Classifications
C; C09; C09B; C09B51/00; C09B1/00; C09B1/16; C09B1/20; D; D06; D06P; D06P3/00; D06P3/004; Y; Y10; Y10S; Y10S8/00; Y10S8/92
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
METHOD OF DYEING A FILAMENTARY MATERIAL COMPRISING FILAMENTS OF A HIGH MOLECULAR WEIGHT OXYMETHYLENE POLYMER WHICH COMPRISES MAINTANING SAID MATERIAL IN CONTACT WITH AN AQUEOUS DYEBATH CONTAINING FROM.01 TO 10 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE FILAMENTARY MATERIAL, OF A DISPERSE DYESTUFF AT A TEMPERATURE BETWEEN ABOUT 80* AND ABOUT 95* C. FOR A PERIOD BETWEEN ABOUT 30 MIN. AND ABOUT 4 HOURS.
References Cited (Backward Citations)
US2768994A
Cited
US2966476A
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GB814582A
Cited
US2989358A
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US2989507A
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US2989506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |