US2955111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of n-alkyl-piperidine and n-alkyl-pyrrolidine-alpha-carboxylic acid amides
Assignee: Saab Bofors AB
•
Filing: 1957-01-28
•
Granted: 1960-10-04
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Ekenstam Bo Thuresson Af
- 👤 Pettersson Bror Gosta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:27
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60; C07D207/00; C07D207/02; C07D207/04; C07D207/10; C07D207/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
9 words
METHOD OF PREPARING MEMBERS OF THE GROUP CONSISTING OF
Claim 2
Dependent Claim
9 words
METHOD OF PREPARING MEMBERS OF THE GROUP CONSISTING OF
Claim 3
Dependent Claim
13 words
METHOD OF PREPARING PIPECOLYL-2-,6-XYLIDIDE IN ACCORDANCE WITH CLAIM 1 WHEREIN THE INTERMEDIATELY FORMED
References Cited (Backward Citations)
US2528928A
Cited
US2799679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |