Patent US2915472A successfully refreshed from Google Patents.
US2915472A
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US
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Brightening compositions
Assignee: Individual
•
Filing: 1956-01-09
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Granted: 1959-12-01
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Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 Pressner Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:51
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/06; C07D311/08; C07D311/16; D; D06; D06L; D06L4/00; D06L4/60; D06L4/664
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A SOLID, COMMINUTED DETERGENT AND BRIGHTENER COMPOSITION FOR FABRICS CONSISTING ESSENTIALLY OF A COMMINUTED SOLID DETERGENT HAVING ABSORBED THEREON A SOLUTION OF A WATER-INSOLUBLE AMINO-COUMARIN COMPOUND EXHIBITING BLUE TO VIOLET FLUORESCENCE AND SELECTED FROM THE GROUP CONSISTING OF A DI-LOWER-ALKYLAMINO-COUMARIN AND A DI-LOWERALKYLAMINO-COUMARIN HAVING A LOWER-ALKYL NUCLEAR SUBSITUENT, SAID AMINO GROUP BEING BEING ATTACHED TO THE BENZENE NUCLEUS, IN PINE OIL, THE COUMARIN COMPOUND BEING PRESENT IN AN AMOUNT SUFFICIENT TO PRODUCE FLUORESCENCE ON THE MATERIAL BEING TREATED AND THE PINE OIL BEING PRESENT IN AN AMOUNT SUFFICIENT TO DISSOLVE THE AMINO-COUMARIN.
References Cited (Backward Citations)
US1870251A
Cited
US2101828A
Cited
US2213477A
Cited
GB490285A
Cited
US2730503A
Cited
US2763618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |