US3030171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of bleaching sized cotton fabrics
Assignee: PPG Industries Inc
•
Filing: 1959-04-17
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Granted: 1962-04-17
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Expires: 1979-04-17
Abstract
No abstract record available.
Inventors
- 👤 Lindsay Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:30
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/10; D06L4/20; D06L4/22; D06L4/23; D06L4/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
IN THE PEPARATION OF A SIZED COTTON FABRIC FOR BLEACHING, THE STEPS COMPRISING INTRODUCING THE SIZED FABRIC INTO AN AQUEOUS ALKALINE SOLUTION OF A HYPOCHLORITE FOR A PERIOD OF TIME SUFFICIENT TO SUBSTANTIALLY IMPREGNATE THE FABRIC WITH SOLUTION, REMOVING THE IMPREGNATED FABRIC
Claim 2
Dependent Claim
42 words
IN THE PEPARATION OF A SIZED COTTON FABRIC FOR BLEACHING, THE STEPS COMPRISING INTRODUCING THE SIZED FABRIC INTO AN AQUEOUS ALKALINE SOLUTION OF A HYPOCHLORITE FOR A PERIOD OF TIME SUFFICIENT TO SUBSTANTIALLY IMPREGNATE THE FABRIC WITH SOLUTION, REMOVING THE IMPREGNATED FABRIC
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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |