US3043828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dyestuffs
Assignee: BASF SE
•
Filing: 1955-07-01
•
Granted: 1962-07-10
•
Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Huenig Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:32
CPC Classifications
C; C09; C09B; C09B26/00; C09B26/02; C09B26/04; C09B27/00; C09B44/00; C09B44/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
5 words
A DYESTUFF OF THE FORMULA
References Cited (Backward Citations)
US2149051A
Cited
US2312040A
Cited
US2396145A
Cited
US2441612A
Cited
US2464785A
Cited
US2864813A
Cited
US2832764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |