Patent JPS539847A successfully refreshed from Google Patents.
US2801246A
Expired / Lapsed
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Metal complexes of hydrazide-hydrazones and process for producing the same
Assignee: Schenley Industries Inc
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Filing: 1953-10-06
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Granted: 1957-07-30
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Expires: 1973-10-06
Abstract
No abstract record available.
Inventors
- 👤 Petersen Siegfried
- 👤 Bayer Otto
- 👤 Hans A Offe
- 👤 Domagk Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:13
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A METAL COMPLEX OF A HYDRAZONE OF A HYDRAZIDE OF A HETEROCYCLIC CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF NICOTINIC ACID, ISONICOTINIC ACID AND PYROMUCIC ACID, AND A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM , COBALT, ZINC, MANGANESE, VANADIUM, ANTIMONY AND NICKEL.
Claim 2
Dependent Claim
49 words
A METAL COMPLEX OF A HYDRAZONE OF A HYDRAZIDE OF A HETEROCYCLIC CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF NICOTINIC ACID, ISONICOTINIC ACID AND PYROMUCIC ACID, AND A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM , COBALT, ZINC, MANGANESE, VANADIUM, ANTIMONY AND NICKEL.
References Cited (Backward Citations)
CH219801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |