Patent US2802031A successfully refreshed from Google Patents.
US2802031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsymmetrical dimethylhydrazine
Assignee: Metalectro Corp
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Filing: 1954-07-19
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Granted: 1957-08-06
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Expires: 1974-07-19
Abstract
No abstract record available.
Inventors
- 👤 Horvitz David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:02
CPC Classifications
C; C07; C07C; C07C241/00; C07C241/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A METHOD OF MANUFACTURE OF UNSYMMETRICAL DIMETHYL HYDRAZINE WHICH COMPRISES REDUCING N-NITROSODIMETHYLAMINE IN AN AQUEOUS MEDIUM BY AN AMPHOTERIC METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ZINC IN THE PRESENCE OF AN INORGANIC ALKALINE AGENT REACTIVE WITH SAID METAL..
Claim 2
Independent Claim
41 words
A METHOD OF MANUFACTURE OF UNSYMMETRICAL DIMETHYL HYDRAZINE WHICH COMPRISES REDUCING N-NITROSODIMETHYLAMINE IN AN AQUEOUS MEDIUM BY AN AMPHOTERIC METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ZINC IN THE PRESENCE OF AN INORGANIC ALKALINE AGENT REACTIVE WITH SAID METAL..
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) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |