US3065040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile bleaching process using chlorite bleaching baths
Assignee: Hoechst AG
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Filing: 1958-09-19
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Granted: 1962-11-20
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Expires: 1978-09-19
Abstract
No abstract record available.
Inventors
- 👤 Waibel Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/20; D06L4/22; D06L4/24; D06L4/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN THE METHOD OF BLEACHING TEXTILES BY PADDING SAID TEXTILES WITH AN IMPREGNATION BATH CONTAINING CHLORITES AND SALTS OF STRONG ACIDS AND WEAK BASES AND THEN STEAMING SAID PADDED TEXTILES, THE IMPROVEMENT OF BUFFERING SAID BATH AT A PH BETWEEN 6 AND 9 BY ADDING TO SAID BATH A MEMBER SELECTED FROM THE GROUP CONSISTING OF WEAK ACIDS HAVING A FIRST DISSOCIATION CONSTANT BETWEEEN 1X103 AND 1.4X105, THE ALKALI METAL AND ALKALINE EARTH SALTS OF SAID ACIDS, AND MIXTURES OF SAID SALTS AND SAID ACIDS.
Claim 2
Dependent Claim
85 words
IN THE METHOD OF BLEACHING TEXTILES BY PADDING SAID TEXTILES WITH AN IMPREGNATION BATH CONTAINING CHLORITES AND SALTS OF STRONG ACIDS AND WEAK BASES AND THEN STEAMING SAID PADDED TEXTILES, THE IMPROVEMENT OF BUFFERING SAID BATH AT A PH BETWEEN 6 AND 9 BY ADDING TO SAID BATH A MEMBER SELECTED FROM THE GROUP CONSISTING OF WEAK ACIDS HAVING A FIRST DISSOCIATION CONSTANT BETWEEEN 1X103 AND 1.4X105, THE ALKALI METAL AND ALKALINE EARTH SALTS OF SAID ACIDS, AND MIXTURES OF SAID SALTS AND SAID ACIDS.
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) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |