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US2529444A
Expired / Lapsed
US
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Metalized ortho-hydroxy, ortho amino monoazo dyestuffs
Assignee: GAF Chemicals Corp
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Filing: 1947-12-03
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Granted: 1950-11-07
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Expires: 1967-12-03
Abstract
No abstract record available.
Inventors
- 👤 Heinrich H Bestehorn
- 👤 Jack F Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:03
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
THE NICKEL ORTHO-HYDROXY, ORTHO-AMINO MONOAZO DYESTUFF OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |