US2631151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoro n-alkyl piperidines
Assignee: 3M Co
•
Filing: 1952-05-21
•
Granted: 1953-03-10
•
Expires: 1972-05-21
Abstract
No abstract record available.
Inventors
- 👤 Edward A Kauck
- 👤 Joseph H Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:13
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/38; C10; C10M; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/044; C10M2215/24; C10M2215/26; C10N; C10N2040/00; C10N2040/08; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
SATURATED FLUOROCARBON TERTIARY MONOAMINES OF THE FULLY FLUORINATED N-ALKYLPIPERIDINE CLASS, HAVING THE FORMULA:
Claim 2
Dependent Claim
13 words
SATURATED FLUOROCARBON TERTIARY MONOAMINES OF THE FULLY FLUORINATED N-ALKYLPIPERIDINE CLASS, HAVING THE FORMULA:
References Cited (Backward Citations)
US2490098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |