Patent US2499133A successfully refreshed from Google Patents.
US2499133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monazo dyestuff
Assignee: Honeywell International Inc
•
Filing: 1945-12-18
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Granted: 1950-02-28
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Expires: 1965-12-18
Abstract
No abstract record available.
Inventors
- 👤 Karl F Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:07
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A DYESTUFF SELECTED FROM THE CLASS CONSISTING OF THE MONO-AZO DYESTUFFS WHICH CORRESPOND WITH THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
17 words
A DYESTUFF SELECTED FROM THE CLASS CONSISTING OF THE MONO-AZO DYESTUFFS WHICH CORRESPOND WITH THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US1078925A
Cited
GB142448A
Cited
US1925434A
Cited
US1835821A
Cited
US2033341A
Cited
US2024864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |