US2984659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New azo-dyestuffs
Assignee: BASF Schweiz AG
•
Filing: 1958-10-27
•
Granted: 1961-05-16
•
Expires: 1978-10-27
Abstract
No abstract record available.
Inventors
- 👤 Illy Hugo Miguel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:31
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AN AZO-DYESTUFF WHICH CONTAINS AT LEAST ONE GROUP IMPARTING SOLUBILITY IN WATER AND WHICH CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
18 words
AN AZO-DYESTUFF WHICH CONTAINS AT LEAST ONE GROUP IMPARTING SOLUBILITY IN WATER AND WHICH CORRESPONDS TO THE FORMULA
References Cited (Backward Citations)
US2126468A
Cited
US2158283A
Cited
US2200423A
Cited
US2274717A
Cited
US2402538A
Cited
US2398367A
Cited
US2657205A
Cited
US2720517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |