US2541816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium pentachlorophenates
Assignee: Rohm and Haas Co
•
Filing: 1943-09-11
•
Granted: 1951-02-13
•
Expires: 1963-09-11
Abstract
No abstract record available.
Inventors
- 👤 Sivert N Glarum
- 👤 Alva L Houk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:24
CPC Classifications
D; D06; D06M; D06M16/00; C; C07; C07D; C07D295/00; C07D295/04; C09; C09K; C09K23/00; C09K23/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
QUATERNARY AMMONIUM COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
6 words
QUATERNARY AMMONIUM COMPOUNDS OF 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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |