US2993885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-naphthylazo phenylamine-4, 6-dichlorotriazines
Assignee: BASF Schweiz AG
•
Filing: 1957-06-27
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Granted: 1961-07-25
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Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 Fasciati Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:17
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A WATER-SOLUBLE MONOAZO DYESTUFF CONTAINING AT LEAST TWO SULFONIC ACID GROUPS AND CORRESPONDING IN ITS FREE ACID STATE TO THE FORMULA
Claim 2
Dependent Claim
21 words
A WATER-SOLUBLE MONOAZO DYESTUFF CONTAINING AT LEAST TWO SULFONIC ACID GROUPS AND CORRESPONDING IN ITS FREE ACID STATE TO 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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |