US3579287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleaching process
Assignee: Monsanto Co
•
Filing: 1969-06-11
•
Granted: 1971-05-18
•
Expires: 1989-06-11
Abstract
Abstract TEXTILE FIBERS BLEACHED WITH SOLUTIONS OF CHLOROCYANURIC ACIDS, SALTS OR COMPLEXES ARE SOURED BY CONTACT WITH AN AQUEOUS ACIDIC SOLUTION CONTAINING HYDROXY ETHYLIDENE DIPHOSPHONIC ACID, SODIUM HEXAMETAPHOSPHATE, ETHYLENE DIAMINE TETRAACETIC ACID, NITRILOTRIACETIC ACID, ALKALI METAL SALTS OF THE FOREGOING ACIDS OR MIXTURES OF THESE COMPOUNDS AS WELL AS THE SULFITE SALTS CONVENTIONALLY UTILIZED IN SOURING SOLUTIONS. THE PROCESS PROVIDES FIBERS CHARACTERIZED BY IMPROVED APPEARANCE AND REDUCED HEAT SENSITIVITY.
Inventors
- 👤 Xavier Kowalski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:38
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/20; D06L4/27; D06L4/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |