Patent JPS5052276A successfully refreshed from Google Patents.
US2853483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo dyestuffs
Assignee: BASF Schweiz AG
•
Filing: 1956-01-24
•
Granted: 1958-09-23
•
Expires: 1976-01-24
Abstract
No abstract record available.
Inventors
- 👤 Rhyner Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:25
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927; Y10S8/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A MONOAZO DYESTUFF WHICH IN ITS FREE BASE STATE CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
13 words
A MONOAZO DYESTUFF WHICH IN ITS FREE BASE 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) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |