Patent US3136764A successfully refreshed from Google Patents.
US3136764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrahalocyclopentadienyldiamine compounds
Assignee: Purdue Research Foundation
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Filing: 1961-03-24
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Granted: 1964-06-09
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
- 👤 Earl T Mcbee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:02
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
1,2,3,4 - TETRAHALOCYCLOPENTADIENE BIS-SUBSTITUTED IN THE 5-POSITION BY SECONDARY AMINO MOIETIES SELECTED FROM THE GROUP CONSISTING OF DI-LOWER-ALKYLAMINO, DIPHENYLAMINO, N-PHENYL-LOWER-ALKYLAMINO, N-MORPHOLINO, N-PIPERIDINO, AND N-PYRROLIDINO. 4. 5,5 - DIMORPHOLINO-1,2,3,4-TETRACHLOROCYCLOPENTADIENE.
Claim 2
Dependent Claim
28 words
1,2,3,4 - TETRAHALOCYCLOPENTADIENE BIS-SUBSTITUTED IN THE 5-POSITION BY SECONDARY AMINO MOIETIES SELECTED FROM THE GROUP CONSISTING OF DI-LOWER-ALKYLAMINO, DIPHENYLAMINO, N-PHENYL-LOWER-ALKYLAMINO, N-MORPHOLINO, N-PIPERIDINO, AND N-PYRROLIDINO. 4. 5,5 - DIMORPHOLINO-1,2,3,4-TETRACHLOROCYCLOPENTADIENE.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |