Patent US2768878A successfully refreshed from Google Patents.
US2768878A
Expired / Lapsed
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Manufacture of hydrazine
Assignee: MW Kellogg Co
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Filing: 1951-10-25
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Granted: 1956-10-30
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Expires: 1971-10-25
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Passino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:52
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE MANUFACTURE OF HYDRAZINE WHICH COMPRISES: SUSPENDING DINITROSOPENTAMETHYLENETETRAMINE AND A HYDROGENATION CATALYST IN AN INERT LIQUID MEDIUM, AND SUBJECTING DINITROSOPENTAMETHYLENETETRAMINE THUS SUSPENDED TO HYDROGENATION WITH MOLECULAR HYDROGEN AT A TEMPERATURE WITHIN THE RANGE FROM SUBSTANTIALLY ABOVE ATMOSPHERIC TEMPERATURE TO ABOUT 200* C. AND AT A PRESSURE BETWEEN ABOUT 100 AND ABOUT 1000 POUNDS PER SQUARE INCH TO PRODUCE HYDRAZINE AS A PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE MANUFACTURE OF HYDRAZINE WHICH COMPRISES: SUSPENDING DINITROSOPENTAMETHYLENETETRAMINE AND A HYDROGENATION CATALYST IN AN INERT LIQUID MEDIUM, AND SUBJECTING DINITROSOPENTAMETHYLENETETRAMINE THUS SUSPENDED TO HYDROGENATION WITH MOLECULAR HYDROGEN AT A TEMPERATURE WITHIN THE RANGE FROM SUBSTANTIALLY ABOVE ATMOSPHERIC TEMPERATURE TO ABOUT 200* C. AND AT A PRESSURE BETWEEN ABOUT 100 AND ABOUT 1000 POUNDS PER SQUARE INCH TO PRODUCE HYDRAZINE AS A PRODUCT OF THE PROCESS.
References Cited (Backward Citations)
DE80466C
Cited
US2591735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |