US2803525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing chromium carbonyl
Assignee: Union Carbide Corp
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Filing: 1955-04-04
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Granted: 1957-08-20
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Eugene O Brimm
- 👤 Jr Maurice A Lynch
- 👤 Walter J Sesny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:11
CPC Classifications
C; C01; C01G; C01G37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR PREPARING CHROMIUM CARBONYL WHICH COMPRISES REACTING TOGETHER CARBON MONOXIDE, A CHROMIUM IODIDE, AND AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ALUMINUM, ZINC, COPPER, SILVER, SODIUM, CALCCIUM, IRON, AND MANGANESE IN THE PRESENCE OF A NEUTRAL OXYGENATED ALIPHATIC SOLVENT COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL ETHERS ALLYL KETONES, AND ETHYLENE GLYCOL ETHERS AND AT A TEMPERATURE BETWEEN ABOUT 0*C. AND 160*C., AND AT A SUPERATMOSPHERIC PRESSURE IN EXCESS OF 100 POUNDS PER SQUARE INCH.
Claim 2
Dependent Claim
82 words
A PROCESS FOR PREPARING CHROMIUM CARBONYL WHICH COMPRISES REACTING TOGETHER CARBON MONOXIDE, A CHROMIUM IODIDE, AND AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ALUMINUM, ZINC, COPPER, SILVER, SODIUM, CALCCIUM, IRON, AND MANGANESE IN THE PRESENCE OF A NEUTRAL OXYGENATED ALIPHATIC SOLVENT COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL ETHERS ALLYL KETONES, AND ETHYLENE GLYCOL ETHERS AND AT A TEMPERATURE BETWEEN ABOUT 0*C. AND 160*C., AND AT A SUPERATMOSPHERIC PRESSURE IN EXCESS OF 100 POUNDS PER SQUARE INCH.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |