Patent US4005496A successfully refreshed from Google Patents.
Patent US2508448A successfully refreshed from Google Patents.
US2508448A
Expired / Lapsed
US
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Azo pigments and coating compositions containing same
Assignee: EIDP Inc
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Filing: 1948-02-03
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Granted: 1950-05-23
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Expires: 1968-02-03
Abstract
No abstract record available.
Inventors
- 👤 Brizzolara Alfred Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:38
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0046; C09B67/0051; C09B63/00; C09B63/005; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
29 words
A DURABLE SYNTHETIC ALKYD RESIN COATING COMPOSITION CONTAINING AS AN ESSENTIAL PIGMENTING INGREDIENT A MIXTURE COMPRISING FROM ABOUT 75-95 PARTS BY WEIGHT OF THE AZO DYESTUFF HAVING THE FORMULA
References Cited (Backward Citations)
GB191206379A
Cited
GB193834A
Cited
US1858628A
Cited
GB334529A
Cited
US2034054A
Cited
US2191530A
Cited
US2225665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |