US2980673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-quaternary ammonium esters of amino-carboxylic acids and aminoalcohols
Assignee: Bayer Corp
•
Filing: 1956-11-28
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Granted: 1961-04-18
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Expires: 1976-11-28
Abstract
No abstract record available.
Inventors
- 👤 Hidalgo John
- 👤 Williams Arthur Rodney
- 👤 Halverstadt Isaac Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:18
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D295/14; C07D295/145; C07D295/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
1-METHYL-2-(4-METHYLMORPHOLINIO)-ETHYL 3-(4-METHYLMORPHOLINIO)-PROPIONATE DIIODIDE.
Claim 2
Dependent Claim
7 words
A BISQUATERNARY AMMONIUM COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2460139A
Cited
US2683167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |