US3853891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(n-(cyanoalkyl)-n-nitroso)amino-aminoalcohol
Assignee: Sandoz AG
•
Filing: 1973-06-20
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Granted: 1974-12-10
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Expires: 1993-06-20
Abstract
Abstract Organic acid, halogenated organic acid and nitrate esters of N(N-(cyanoalkyl)-N-nitroso)amino-aminoalcohols, e.g., 4-(N-(1cyanoethyl)-N-nitroso)amino-1-piperazine-ethanol nitrate, are useful as anti-anginal agents.
Inventors
- 👤 W Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/28; C07D295/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
10 words
The compound of claim 1 which is 1-(N-(1-cyanoethyl)-N-nitroso)amino-4-piperidine ethanol acetate.
Claim 4
Dependent Claim
14 words
The compounds of claim 1 in which R3 and R4 together with N represent
Claim 5
Dependent Claim
9 words
The compound of claim 3 which is 1-(N-(1-cyanoethyl)-N-nitroso)amino-4-piperidin-ethanol nitrate.
Claim 6
Dependent Claim
12 words
The compound of claim 3 in the form of their maleate salts.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |