US3341495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrocene polymers
Assignee: McDonnell Douglas Corp
•
Filing: 1963-09-12
•
Granted: 1967-09-12
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Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Eberhard W Neuse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:46
CPC Classifications
C; C08; C08G; C08G61/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
8 words
A POLYMERIC MIXTURE OF MOLECULES HAVING THE STRUCTURE
Claim 2
Dependent Claim
8 words
A POLYMERIC MIXTURE OF MOLECULES HAVING THE STRUCTURE
Claim 3
Independent Claim
60 words
THE METHOD OF POLYMERIZING FERROCENE WHICH COMPRISES REACTING (1) FERROCENE WITH (2) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE, SAID REACTION BEING CARRIED OUT BY HEATING A MIXTURE OF THE REACTANTS IN THE PRESENCE OF A LEWIS ACID CATALYST, SUCH HEATING BEING CARRIED OUT IN THE SUBSTANTIAL ABSENCE OF A SOLVENT AND IN THE MELT PHASE.
Claim 4
Independent Claim
60 words
THE METHOD OF POLYMERIZING FERROCENE WHICH COMPRISES REACTING (1) FERROCENE WITH (2) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE, SAID REACTION BEING CARRIED OUT BY HEATING A MIXTURE OF THE REACTANTS IN THE PRESENCE OF A LEWIS ACID CATALYST, SUCH HEATING BEING CARRIED OUT IN THE SUBSTANTIAL ABSENCE OF A SOLVENT AND IN THE MELT PHASE.
References Cited (Backward Citations)
US2709175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |