US2835686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organometallic compounds containing cyclopentadienyl nuclei bonded directly to a group viii metal and to a group i or a group ii metal
Assignee: EIDP Inc
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Filing: 1953-11-12
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Granted: 1958-05-20
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Expires: 1973-11-12
Abstract
No abstract record available.
Inventors
- 👤 Peter J Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:14
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305; C07; C07F; C07F17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN ORGANOMETALLIC COMPOUND WHEREIN A METAL OF GROUP VIII OF THE PERIODIC TABLE IS BONDED DIRECTLY TO NUCLEAR CARBON OF TWO FIVE-MEMBERED CARBOCYCLIC RADICALS WHICH ARE ENTIRELY HYDROCARBON AND EACH OF WHICH CONTAINS THE CYCLOPENTADIENE RING AS ITS NUCLEUS AND WHEREIN AT LEAST ONE OF SAID CARBOCYCLIC RADICALS ALSO IS BONDED DIRECTLY THROUGH NUCLEAR CARBON THEREOF TO A METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI METALS AND METALS OF GROUP II HAVING AN ATOMIC NUMBER NOT EXCEEDING 80, AND THE REMAINING VALENCE OF SAID GROUP II METAL IS BONDED TO AN ANION.
Claim 2
Dependent Claim
93 words
AN ORGANOMETALLIC COMPOUND WHEREIN A METAL OF GROUP VIII OF THE PERIODIC TABLE IS BONDED DIRECTLY TO NUCLEAR CARBON OF TWO FIVE-MEMBERED CARBOCYCLIC RADICALS WHICH ARE ENTIRELY HYDROCARBON AND EACH OF WHICH CONTAINS THE CYCLOPENTADIENE RING AS ITS NUCLEUS AND WHEREIN AT LEAST ONE OF SAID CARBOCYCLIC RADICALS ALSO IS BONDED DIRECTLY THROUGH NUCLEAR CARBON THEREOF TO A METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI METALS AND METALS OF GROUP II HAVING AN ATOMIC NUMBER NOT EXCEEDING 80, AND THE REMAINING VALENCE OF SAID GROUP II METAL IS BONDED TO AN ANION.
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |