US2842501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical bleaching compositions
Assignee: GAF Chemicals Corp
•
Filing: 1955-12-30
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Granted: 1958-07-08
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Harlan B Freyermuth
- 👤 William W Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:48
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/22; D; D06; D06L; D06L4/00; D06L4/60; D06L4/664
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A COMPOSITION OF MATTER FOR BRIGHTENING WHITE SYNTHETIC FIBROUS MATERIALS SELECTED FROM THE CLASS CONSISTING OF SYNTHETIC FIBROUS SUPERPOLYAMIDES AND SYNTHETIC FIBROUS MATERIALS OF ORGANIC DERIVATIVES OF CELLULOSE COMPRISING AN AQUEOUS EMULSION CONTAINING 0.1-2.5% BY WEIGHT OF AN ORGANIC WATER-SOLUBLE SYNTHETIC DETERGENT, AND FROM 0.0005-0.01% BY WEIGHT OF A BRIGNTENING AGENT CHARACTERIZED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
57 words
A COMPOSITION OF MATTER FOR BRIGHTENING WHITE SYNTHETIC FIBROUS MATERIALS SELECTED FROM THE CLASS CONSISTING OF SYNTHETIC FIBROUS SUPERPOLYAMIDES AND SYNTHETIC FIBROUS MATERIALS OF ORGANIC DERIVATIVES OF CELLULOSE COMPRISING AN AQUEOUS EMULSION CONTAINING 0.1-2.5% BY WEIGHT OF AN ORGANIC WATER-SOLUBLE SYNTHETIC DETERGENT, AND FROM 0.0005-0.01% BY WEIGHT OF A BRIGNTENING AGENT CHARACTERIZED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2674604A
Cited
US2713056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |