US2913459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New quaternary ammonium compounds and process for the production thereof
Assignee: Merck Eprova AG
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Filing: 1955-12-06
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Granted: 1959-11-17
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Expires: 1975-12-06
Abstract
No abstract record available.
Inventors
- 👤 Suter Hans
- 👤 Kundig Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:50
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
16 words
NEW CHEMICAL COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF QUARTERNARY AMMONIUM COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
16 words
NEW CHEMICAL COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF QUARTERNARY AMMONIUM COMPOUNDS OF THE GENERAL FORMULA
Claim 3
Dependent Claim
7 words
THE NEW CHEMICAL COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
7 words
THE NEW CHEMICAL COMPOUND 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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |