Patent US2831880A successfully refreshed from Google Patents.
US2831880A
Expired / Lapsed
US
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Organosilicon derivatives of dicyclopentadienyl metals and methods for preparing the same
Assignee: General Electric Co
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Filing: 1953-01-03
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Granted: 1958-04-22
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Expires: 1973-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert A Benkeser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:05
CPC Classifications
C; C07; C07F; C07F17/00; C07F17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A COMPOSITION OF MATTER CORRESPONDING TO THE GENERAL FORMULA
Claim 2
Dependent Claim
9 words
A COMPOSITION OF MATTER CORRESPONDING TO THE GENERAL FORMULA
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |