US3329692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-amino-4-hydroxy-2-(cyano- and cyanoalkyl-phenoxy)-anthraquinones
Assignee: BASF Schweiz AG
•
Filing: 1963-07-08
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Granted: 1967-07-04
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Expires: 1983-07-08
Abstract
No abstract record available.
Inventors
- 👤 Ramanathan Visvanathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C09; C09B; C09B1/00; C09B1/50; C09B1/503; C09B1/54; C09B1/547; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
DYESTUFFS OF THE FORMULA
Claim 2
Dependent Claim
4 words
DYESTUFFS 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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |