US2524086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycyclicalkyl arylsulfonic acid derivatives as surface-active agents
Assignee: Universal Oil Products Co
•
Filing: 1948-11-20
•
Granted: 1950-10-03
•
Expires: 1968-11-20
Abstract
No abstract record available.
Inventors
- 👤 Schmerling Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:33
CPC Classifications
C; C07; C07C; C07C309/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A SURFACE-ACTIVE AGENT COMPRISING AN ALKYLBICYCLOHEPTYLARYLSULFONATE CONTAINING AN ALKYL GROUP OF AT LEAST 3 CARBON ATOMS.
Claim 2
Dependent Claim
16 words
A SURFACE-ACTIVE AGENT COMPRISING AN ALKYLBICYCLOHEPTYLARYLSULFONATE CONTAINING AN ALKYL GROUP OF AT LEAST 3 CARBON ATOMS.
References Cited (Backward Citations)
US2054140A
Cited
US2145369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |