Patent US2765239A successfully refreshed from Google Patents.
US2765239A
Expired / Lapsed
US
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Process for the improvement of organic material
Assignee: BASF Schweiz AG
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Filing: 1953-05-18
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Granted: 1956-10-02
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Siegrist Adolf Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:06
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/60; Y; Y10; Y10S; Y10S534/00; Y10S534/01; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2967; Y10T428/2969; Y10T428/2971; Y10T442/00; Y10T442/20; Y10T442/2582; Y10T442/2861; Y10T442/2893; Y10T442/2902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS FOR THE BRIGHTENING OF ORGANIC METERIAL WHICH COMPRISES TREATING THE MATERIAL WITH A SUBSTANTIALLY COLORLESS COMPOUND WHICH EXHIBITS IN SOLUTION OR WHEN APPLIED TO A SUBSTRATUM A GREEN-BLUE TO VIOLET FLUORESCENCE IN ULTRA-VIOLET LIGHT OR IN DAYLIGHT AND IS WATER-SOLUBLE IN THE FORM OF SALTS AND CORRESPONDS TO THE GENERAL FORMULA
Claim 2
Dependent Claim
53 words
A PROCESS FOR THE BRIGHTENING OF ORGANIC METERIAL WHICH COMPRISES TREATING THE MATERIAL WITH A SUBSTANTIALLY COLORLESS COMPOUND WHICH EXHIBITS IN SOLUTION OR WHEN APPLIED TO A SUBSTRATUM A GREEN-BLUE TO VIOLET FLUORESCENCE IN ULTRA-VIOLET LIGHT OR IN DAYLIGHT AND IS WATER-SOLUBLE IN THE FORM OF SALTS AND CORRESPONDS TO THE GENERAL FORMULA
References Cited (Backward Citations)
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Cited
GB425609A
Cited
US2191810A
Cited
US2338782A
Cited
US2320654A
Cited
US2476525A
Cited
US2620292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |