US2856407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoacid esters of n-substituted 3 and 4-piperidinols
Assignee: LAKESIDE LAB Inc
•
Filing: 1956-08-08
•
Granted: 1958-10-14
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Expires: 1976-08-08
Abstract
No abstract record available.
Inventors
- 👤 John H Biel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:11
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46; C07D211/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
A MEMBER OF THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULAE:
Claim 2
Dependent Claim
11 words
A MEMBER OF THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULAE:
Claim 3
Dependent Claim
2 words
N-METYL-3-PIPERIDYL 3''-MORPHOLINOPROPIONATE.
Claim 4
Dependent Claim
2 words
N-METYL-3-PIPERIDYL 3''-MORPHOLINOPROPIONATE.
References Cited (Backward Citations)
US2536079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |