Patent US3030224A successfully refreshed from Google Patents.
US3030224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical bleaches
Assignee: Zeneca Inc
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Filing: 1960-04-29
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Granted: 1962-04-17
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Expires: 1980-04-29
Abstract
No abstract record available.
Inventors
- 👤 Robert W Liggett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:42
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/60; D06L4/614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD OF PRODUCING A BRIGHTENING EFFECT UPON TEXTILE MATERIAL WHICH COMPRISES TREATING A TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING BETWEEN ABOUT 0.0001% AND ABOUT 0.1% BY WEIGHT OF THE SOLUTION OF AN OPTICAL BLEACH SELECTED FROM THE GROUP CONSISTING OF LOPHINE AND 2-(3,4-METHYLENEDIOXYPHENYL)-4,5-DIPHENYLIMIDAZOLE, AND ALLOWING THE WATER TO EVAPORATE.
Claim 2
Independent Claim
51 words
A METHOD OF PRODUCING A BRIGHTENING EFFECT UPON TEXTILE MATERIAL WHICH COMPRISES TREATING A TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING BETWEEN ABOUT 0.0001% AND ABOUT 0.1% BY WEIGHT OF THE SOLUTION OF AN OPTICAL BLEACH SELECTED FROM THE GROUP CONSISTING OF LOPHINE AND 2-(3,4-METHYLENEDIOXYPHENYL)-4,5-DIPHENYLIMIDAZOLE, AND ALLOWING THE WATER TO EVAPORATE.
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) | 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 |