Patent US2795626A successfully refreshed from Google Patents.
US2795626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for organo-metallic derivatives
Assignee: Millennium Petrochemicals Inc
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Filing: 1954-04-14
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Granted: 1957-06-11
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Expires: 1974-04-14
Abstract
No abstract record available.
Inventors
- 👤 John F Nobis
- 👤 Robert E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:58
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
THE PROCESS WHICH COMPRISES PREPARING A GRIGNARD REAGENT BY REACTING AN ORGANOSODIUM COMPOUND, IN WHICH THE SODIUM IS DIRECTLY BONDED TO CARBON, AND SOLID, ANHYDROUS MAGNEISUM CHLORIDE, IN AN INERT LIQUID HYDROCARBON REACTION MEDIUM.
Claim 2
Dependent Claim
34 words
THE PROCESS WHICH COMPRISES PREPARING A GRIGNARD REAGENT BY REACTING AN ORGANOSODIUM COMPOUND, IN WHICH THE SODIUM IS DIRECTLY BONDED TO CARBON, AND SOLID, ANHYDROUS MAGNEISUM CHLORIDE, IN AN INERT LIQUID HYDROCARBON REACTION MEDIUM.
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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |