Patent US2977363A successfully refreshed from Google Patents.
US2977363A
Expired / Lapsed
US
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Synthesis of 1, 4-diazabicyclo (2.2.2) octane
Assignee: Houdry Process Corp
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Filing: 1958-07-30
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Granted: 1961-03-28
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Expires: 1978-07-30
Abstract
No abstract record available.
Inventors
- 👤 Farkas Adalbert
- 👤 Jack H Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:58
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE METHOD OF PREPARING 1,4-DIAZABICYCLO-(2.2.2)OCTANE COMPRISING, CONTACTING A CHARGE MIXTURE OF 50 TO 75 MOL PERCENT DIETHANOLAMINE AND 50 TO 25 MOL PERCENT OF ETHYLENE DIAMINE WITH AN ACIDIC SILICEOUS CRACKING CATALYST AT A TEMPERATURE IN THE RANGE OF 575 TO 900*F.
Claim 2
Independent Claim
42 words
THE METHOD OF PREPARING 1,4-DIAZABICYCLO-(2.2.2)OCTANE COMPRISING, CONTACTING A CHARGE MIXTURE OF 50 TO 75 MOL PERCENT DIETHANOLAMINE AND 50 TO 25 MOL PERCENT OF ETHYLENE DIAMINE WITH AN ACIDIC SILICEOUS CRACKING CATALYST AT A TEMPERATURE IN THE RANGE OF 575 TO 900*F.
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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |