Patent US2861990A successfully refreshed from Google Patents.
US2861990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic compounds
Assignee: EIDP Inc
•
Filing: 1955-12-09
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Granted: 1958-11-25
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Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
- 👤 Cleaver Charles Spencer
- 👤 England David Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:53
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/32; C07D207/325; C07D209/00; C07D209/02; C07D209/04; C07D209/08; C07D209/56; C07D209/80; C07D209/82; C07D209/86; C07D265/00; C07D265/28; C07D265/30; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
8 words
AN N-FLUOROALKYL HETEROCYCLIC TERTIARY MONOAMINE OF THE FORMULA
Claim 2
Dependent Claim
8 words
AN N-FLUOROALKYL HETEROCYCLIC TERTIARY MONOAMINE OF THE FORMULA
Claim 3
Dependent Claim
1 words
N-(1,1,2,2-TETRAFLUOROETHYL)PHENOTHIAZINE.
Claim 4
Dependent Claim
1 words
N-(1,1,2,2-TETRAFLUOROETHYL)PHENOTHIAZINE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |