Patent US2834772A successfully refreshed from Google Patents.
US2834772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallized compounds of 3-amino-4-hydroxybenzene sulfonylmorpholine azo dyestuffs
Assignee: GAF Chemicals Corp
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Filing: 1954-08-20
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Granted: 1958-05-13
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Expires: 1974-08-20
Abstract
No abstract record available.
Inventors
- 👤 Albert F Strobel
- 👤 William W Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:07
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
THE METALLIZED COMPOUNDS OF A MONOAZO DYESTUFF. CONTAINING A METAL SELECTED FROM THE CLASS CONSISTING OF CHROMIUM AND COBALT, HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
24 words
THE METALLIZED COMPOUNDS OF A MONOAZO DYESTUFF. CONTAINING A METAL SELECTED FROM THE CLASS CONSISTING OF CHROMIUM AND COBALT, HAVING THE FOLLOWING GENERAL 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) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |