Patent US3314932A successfully refreshed from Google Patents.
US3314932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium complex mixed azo dyestuffs
Assignee: Bayer AG
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Filing: 1964-01-30
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Granted: 1967-04-18
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Expires: 1984-01-30
Abstract
No abstract record available.
Inventors
- 👤 Scholl Walter
- 👤 Dittmar Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:52
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
AN ASYMMETRICAL CHROMIUM MIXED COMPLEX AZO DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
10 words
AN ASYMMETRICAL CHROMIUM MIXED COMPLEX AZO 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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |