US2671250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of blending fibers
Assignee: Wyeth Holdings LLC
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Filing: 1952-05-21
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Granted: 1954-03-09
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Expires: 1972-05-21
Abstract
No abstract record available.
Inventors
- 👤 Louis I Fidell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:19
CPC Classifications
D; D01; D01G; D01G13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR BLENDING DIVERSE TYPES OF TEXTILE FIBERS WHICH COMPRISES DYEING AT LEAST ONE TYPE OF FIBER WITH A FLUORESCENT DYE TO PRODUCE DYED FIBERS VISUALLY DISTINGUISHABLE WHEN EXPOSED TO ULTRAVIOLET LIGHT FROM FIBERS NOT SO DYED, AND BLENDING THE SAID DYED FIBERS WITH THE SAID FIBERS NOT SO DYED UNTIL THE MIXTURE SHOWS THE DESIRED DEGREE OF UNIFORMITY WHEN EXPOSED TO ULTRAVOILET LIGHT.
Claim 2
Dependent Claim
65 words
A PROCESS FOR BLENDING DIVERSE TYPES OF TEXTILE FIBERS WHICH COMPRISES DYEING AT LEAST ONE TYPE OF FIBER WITH A FLUORESCENT DYE TO PRODUCE DYED FIBERS VISUALLY DISTINGUISHABLE WHEN EXPOSED TO ULTRAVIOLET LIGHT FROM FIBERS NOT SO DYED, AND BLENDING THE SAID DYED FIBERS WITH THE SAID FIBERS NOT SO DYED UNTIL THE MIXTURE SHOWS THE DESIRED DEGREE OF UNIFORMITY WHEN EXPOSED TO ULTRAVOILET LIGHT.
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) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |