US2862009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New water soluble quaternary ammonium salts
Assignee: BASF Schweiz AG
•
Filing: 1955-02-24
•
Granted: 1958-11-25
•
Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 Albrecht Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:25
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/34; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/16; C07D; C07D303/00; C07D303/02; C07D303/36; D; D06; D06M; D06M13/00; D06M13/322; D06M13/385; D06M13/402; D06M13/405; D06M13/425; D06M13/46; D06M13/461; D06M15/00; D06M15/19; D06M15/37; D06M15/59; D06M15/595
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
THE PRODUCT OF THE FORMULA
Claim 2
Dependent Claim
5 words
THE PRODUCT OF THE FORMULA
References Cited (Backward Citations)
US2541816A
Cited
US2459062A
Cited
US2474202A
Cited
US2589674A
Cited
US2668165A
Cited
US2712544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |