Patent US2824093A successfully refreshed from Google Patents.
US2824093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyestuffs
Assignee: Saul and Co
•
Filing: 1953-09-28
•
Granted: 1958-02-18
•
Expires: 1973-09-28
Abstract
No abstract record available.
Inventors
- 👤 Benz Jakob
- 👤 Wehrli Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:12
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B62/08; C09B62/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AZO DYESTUFFS WHICH CORRESPOND TO THE FORMULA
Claim 2
Dependent Claim
15 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF AZO DYESTUFFS WHICH CORRESPOND 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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |