Patent US3356524A successfully refreshed from Google Patents.
US3356524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating and brightening cellulose fibers
Assignee: Wyeth Holdings LLC
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Filing: 1966-09-29
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Granted: 1967-12-05
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Buell Bennett George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:25
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/60; D06L4/664; D06L4/657
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A METHOD OF TREATING COTTON FIBERS WHICH COMPRISES CONTACTING SAID FIBERS WITH AN AQUEOUS SOLUTION HAVING AN EFFECTIVE AMOUNT OF THERMOSETTING TEXTILE RESIN, AN EFFECTIVE AMOUNT IF A CATIONIC SOFTNER AND AN EFFECTIVE AMOUNT OF AN OPTICAL BRIGHTENER OF THE FORMULA:
Claim 2
Independent Claim
41 words
A METHOD OF TREATING COTTON FIBERS WHICH COMPRISES CONTACTING SAID FIBERS WITH AN AQUEOUS SOLUTION HAVING AN EFFECTIVE AMOUNT OF THERMOSETTING TEXTILE RESIN, AN EFFECTIVE AMOUNT IF A CATIONIC SOFTNER AND AN EFFECTIVE AMOUNT OF AN OPTICAL BRIGHTENER OF THE FORMULA:
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) | 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 |