Patent US2878103A successfully refreshed from Google Patents.
US2878103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Robell ctal
Assignee: —
•
Filing: —
•
Granted: 1959-03-17
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Expires: 1976-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:58
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN A PROCESS FOR PRODUCING ANHYDROUS HYDRAZINE, THE IMPROVEMENT THAT COMPRISES FORMING AN ANHYDROUS BINARY COMPLEX OF HYDRAZINE AND CARBON DIOXIDE SELECTED FROM THE GROUP CONSISTING OF HYDRAZINIUM CARBAZATE AND THE AZEOTROPIC MIXTURE OF HYDRAZINE AND CARBON DIOXIDE BOILING AT 140-141*C., AND EXTRACTING HYDRAZINE FROM SAID HYDRAZINE-CARBON DIOXIDE COMPLEX WITH AN ALCOHOL IN THE LIQUID PHASE.
Claim 2
Dependent Claim
56 words
IN A PROCESS FOR PRODUCING ANHYDROUS HYDRAZINE, THE IMPROVEMENT THAT COMPRISES FORMING AN ANHYDROUS BINARY COMPLEX OF HYDRAZINE AND CARBON DIOXIDE SELECTED FROM THE GROUP CONSISTING OF HYDRAZINIUM CARBAZATE AND THE AZEOTROPIC MIXTURE OF HYDRAZINE AND CARBON DIOXIDE BOILING AT 140-141*C., AND EXTRACTING HYDRAZINE FROM SAID HYDRAZINE-CARBON DIOXIDE COMPLEX WITH AN ALCOHOL IN THE LIQUID PHASE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |