US3113928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bleaching fibrous material
Assignee: Whirlpool Corp
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Filing: 1960-02-12
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Granted: 1963-12-10
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Expires: 1980-02-12
Abstract
No abstract record available.
Inventors
- 👤 Richard C Davis
- 👤 Donald C Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:45
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/20; D06L4/22; D06L4/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF BLEACHING A FIBROUS MATERIAL CONTAINING A CHLORINE SENSITIVE DYE, COMPRISING: SUBJECTING SAID MATERIAL TO AN AQUEOUS SOLUTION OF A WATER SOLUBLE HYPOCHLORITE BLEACH CONTAINING A MEMBER OF THE GROUP CONSISTING OF ALIPHATIC AMINES AND ALKANOLAMINES, SAID MEMBER BEING OF LOW MOLECULAR WEIGHT TO BE WATER SOLUBLE, BEING PRESENT IN AN AMOUNT OF AT LEAST 0.005%BY WEIGHT OF THE BLEACH ON A DRY BASIS AND HAVING AN AVAILABLE HYDROGEN FOR REACTING WITH THE CHLORINE OF SAID HYPOCHLORITE BLEACH.
Claim 2
Independent Claim
80 words
THE METHOD OF BLEACHING A FIBROUS MATERIAL CONTAINING A CHLORINE SENSITIVE DYE, COMPRISING: SUBJECTING SAID MATERIAL TO AN AQUEOUS SOLUTION OF A WATER SOLUBLE HYPOCHLORITE BLEACH CONTAINING A MEMBER OF THE GROUP CONSISTING OF ALIPHATIC AMINES AND ALKANOLAMINES, SAID MEMBER BEING OF LOW MOLECULAR WEIGHT TO BE WATER SOLUBLE, BEING PRESENT IN AN AMOUNT OF AT LEAST 0.005%BY WEIGHT OF THE BLEACH ON A DRY BASIS AND HAVING AN AVAILABLE HYDROGEN FOR REACTING WITH THE CHLORINE OF SAID HYPOCHLORITE BLEACH.
References Cited (Backward Citations)
US2810717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |