Patent US3012948A successfully refreshed from Google Patents.
US3012948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration of methylhydrazine
Assignee: Millennium Petrochemicals Inc
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Filing: 1959-03-26
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Granted: 1961-12-12
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Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Horvitz David
- 👤 Amos H Pope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:37
CPC Classifications
C; C07; C07C; C07C241/00; C07C241/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A METHOD FOR DEHYDRATING METHYLHYDRAZINE WHICH COMPRISES DISTILLING AN AQUEOUS METHYLHYDRAZINE SOLUTION IN THE PRESENCE OF AN ENTRAINER SELECTED FROM THE GROUP CONSISTING OF HYDRAZINE AND ETHYLENE DIAMINE, AND RECOVERING DEHYDRATED METHYLHYDRAZINE.
Claim 2
Independent Claim
32 words
A METHOD FOR DEHYDRATING METHYLHYDRAZINE WHICH COMPRISES DISTILLING AN AQUEOUS METHYLHYDRAZINE SOLUTION IN THE PRESENCE OF AN ENTRAINER SELECTED FROM THE GROUP CONSISTING OF HYDRAZINE AND ETHYLENE DIAMINE, AND RECOVERING DEHYDRATED METHYLHYDRAZINE.
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |