Patent US2823217A successfully refreshed from Google Patents.
US2823217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of chromic acetylacetonate
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1954-04-08
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Granted: 1958-02-11
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Expires: 1974-04-08
Abstract
No abstract record available.
Inventors
- 👤 Jack J Bulloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:15
CPC Classifications
C; C07; C07F; C07F11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
THE METHOD OF PRODUCING CHROMIC ACETYLACETONATE WHICH COMPRISES REACTING A SOLUTION OF A SOLUBLE CHROMIC SALT WITH ACETYLACETONE IN AN ALKALI MEDIUM STABILIZED WITH A CARBOXY METHYL DEXTRAN OF AN ALKALI METAL AGAINST HYDROUS CHROMIC OXIDE PRECIPITATION.
Claim 2
Independent Claim
37 words
THE METHOD OF PRODUCING CHROMIC ACETYLACETONATE WHICH COMPRISES REACTING A SOLUTION OF A SOLUBLE CHROMIC SALT WITH ACETYLACETONE IN AN ALKALI MEDIUM STABILIZED WITH A CARBOXY METHYL DEXTRAN OF AN ALKALI METAL AGAINST HYDROUS CHROMIC OXIDE PRECIPITATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |