Patent US3034861A successfully refreshed from Google Patents.
US3034861A
Expired / Lapsed
US
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Process for preparing hydrazine
Assignee: Individual
•
Filing: 1959-06-26
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Granted: 1962-05-15
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Expires: 1979-06-26
Abstract
No abstract record available.
Inventors
- 👤 John A Pursley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:28
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR PREPARING HYDRAZINE COMPRISES CONTACTING AT LEAST ONE HALOAMINE OF THE FORMULA HALO-NH2 CONTAINING A HALOGEN HAVING AN ATOMIC NUMBER NOT GREATER THAN THAT OF BROMINE WITH AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE METALS OF GROUPS IA AND IIA OF THE PERIODIC CLASSIFICATION OF ELEMENTS AND THE AMIDES THEREOF.
Claim 2
Dependent Claim
56 words
A PROCESS FOR PREPARING HYDRAZINE COMPRISES CONTACTING AT LEAST ONE HALOAMINE OF THE FORMULA HALO-NH2 CONTAINING A HALOGEN HAVING AN ATOMIC NUMBER NOT GREATER THAN THAT OF BROMINE WITH AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE METALS OF GROUPS IA AND IIA OF THE PERIODIC CLASSIFICATION OF ELEMENTS AND THE AMIDES THEREOF.
References Cited (Backward Citations)
US910858A
Cited
US2373800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |