US2906748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New monoazo-dyestuffs
Assignee: BASF Schweiz AG
•
Filing: 1958-03-03
•
Granted: 1959-09-29
•
Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Riat Henri
- 👤 Oesterlein Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:02
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08; C09B29/0805; C09B29/0807; C09B29/0809; C09B29/0811; C09B29/0815; C09B29/0819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MONOAZO-DYESTUFF WHCIH IN ITS FREE ACID STATE CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
12 words
A MONOAZO-DYESTUFF WHCIH IN ITS FREE ACID STATE CORRESPONDS 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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |