US2832795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface-active agents
Assignee: Bayer AG
•
Filing: 1956-04-03
•
Granted: 1958-04-29
•
Expires: 1976-04-03
Abstract
No abstract record available.
Inventors
- 👤 Hempel Herbert
- 👤 Quaedvlieg Mathieu
- 👤 Hintzmann Karl
- 👤 Dahmen Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:33
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/88; C11D1/38; C11D1/42; C11D1/44; D; D06; D06P; D06P1/00; D06P1/44; D06P1/60; D06P1/607
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
SURFACE-ACTIVE AGENTS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
SURFACE-ACTIVE AGENTS OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2496582A
Cited
GB595962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |