US3036059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lakes of monoazo dyestuffs
Assignee: Sandoz AG
•
Filing: 1958-05-09
•
Granted: 1962-05-22
•
Expires: 1978-05-09
Abstract
No abstract record available.
Inventors
- 👤 Ehrhardt Klaus
- 👤 Kehrer Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:01
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0041; C09; C09B; C09B63/00; C09B63/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
COLOR LAKES OF MONOAZO DYESTUFFS OF THE FORMULA
Claim 2
Dependent Claim
8 words
COLOR LAKES OF MONOAZO DYESTUFFS OF THE FORMULA
References Cited (Backward Citations)
US1086155A
Cited
US1126413A
Cited
US1788299A
Cited
DE575787C
Cited
US2203038A
Cited
US2092796A
Cited
US2229049A
Cited
US2626255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |