Patent US2785052A successfully refreshed from Google Patents.
US2785052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrazine
Assignee: Metalectro Corp
•
Filing: 1951-06-22
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Granted: 1957-03-12
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Expires: 1971-06-22
Abstract
No abstract record available.
Inventors
- 👤 Osborg Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:58
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD OF PRODUCING A HYDROZINE FROM A HYDRAZINE CONTAINIG WATER COMPOSITION WHICH COMPRISES CONTACTING SAID COMPOSITION WITH CALCIUM CARBIDE IN AN AMOUNT TO REACT WITH THE WATER PRESENT, TO GIVE A HYDRAZINE IN THE FORM AND CONCENTRATION DESIRED, THE CALCIUM CARBIDE BEING CARRIED IN AN ORGANIC CARRIER LIQUID INERT AT THE TEMPERATURES EMPLOYED TO THE DESIRED PRODUCTS.
Claim 2
Independent Claim
58 words
THE METHOD OF PRODUCING A HYDROZINE FROM A HYDRAZINE CONTAINIG WATER COMPOSITION WHICH COMPRISES CONTACTING SAID COMPOSITION WITH CALCIUM CARBIDE IN AN AMOUNT TO REACT WITH THE WATER PRESENT, TO GIVE A HYDRAZINE IN THE FORM AND CONCENTRATION DESIRED, THE CALCIUM CARBIDE BEING CARRIED IN AN ORGANIC CARRIER LIQUID INERT AT THE TEMPERATURES EMPLOYED TO THE DESIRED PRODUCTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |