US3320232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersible mono azo dyes
Assignee: Novartis AG
•
Filing: 1964-02-07
•
Granted: 1967-05-16
•
Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 Hans E Wegmuller
- 👤 Bossard Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:36
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B62/0067; C09B31/00; C09B31/02; C09B31/12; C09B31/14; C09B31/143; C09B31/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A YELLOW TO ORANGE METAL-FREE MONOAZO DYE-STUFF FREE FROM GROUPS DISSOCIATING ACID IN WATER AND FROM SULFONIC ACID AMIDE, CARBONIC ACID AMIDE AND ARYLOXY-SULFONYL RADICALS, WHICH DYESTUFF IS OF THE FORMULA
Claim 2
Dependent Claim
31 words
A YELLOW TO ORANGE METAL-FREE MONOAZO DYE-STUFF FREE FROM GROUPS DISSOCIATING ACID IN WATER AND FROM SULFONIC ACID AMIDE, CARBONIC ACID AMIDE AND ARYLOXY-SULFONYL RADICALS, WHICH DYESTUFF IS 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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |