US2810737A
Expired / Lapsed
US
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Dicyclopentadienyl group viii metal compounds having an alpha-hydroxyalkyl substituent on one or both of the cyclopentadienyl rings
Assignee: EIDP Inc
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Filing: 1953-07-01
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Granted: 1957-10-22
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Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred C Haven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:07
CPC Classifications
C; C07; C07F; C07F17/00; C07F17/02; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
AN ORGANOMETALLIC COMPOUND WHEREIN AN EIGHTH GROUP METAL SELECTED FROM THE CLASS CONSISTING OF IRON, COBALT AND NICKEL IS BONDED TO TWO CYCLOPENTADIENYL RADICALS HAVING AS THEIR ONLY SUBSTITUTION FROM ONE TO TWO A-HYDROXYALKYL GROUPS, EACH OF NOT MORE THAN FOUR CARBONS, BUT NOT MORE THAN ONE SUCH GROUP ON EACH CYCLOPENTADIENLY RING.
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |