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US3133910A
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Tetrazapolymethine dyes
Assignee: BASF SE
•
Filing: 1961-05-15
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Granted: 1964-05-19
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Baumann Hans
- 👤 Dehnert Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:38
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/04; C09B31/043; C09B31/047; C09B26/00; C09B26/02; C09B26/04; C09B35/00; C09B35/02; C09B35/039; C09B35/04; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |