Patent US3313798A successfully refreshed from Google Patents.
US3313798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylimidazoline containing mono azo dyes
Assignee: BASF SE
•
Filing: 1963-12-10
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Granted: 1967-04-11
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Expires: 1983-12-10
Abstract
No abstract record available.
Inventors
- 👤 Dehnert Johannes
- 👤 Hansen Guenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:31
CPC Classifications
C; C09; C09B; C09B44/00; C09B26/00; C09B26/02; C09B26/04; C09B29/00; C09B29/32; C09B44/10; C09B44/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A DYE OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A DYE OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |