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US3359239A
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Polymerization of bis-(alpha-haloalkyl) aromatic compounds in the pressence of a coupling agent; reaction conducted in organic solvent/hydroxylic solvent medium
Assignee: Millennium Petrochemicals Inc
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Filing: 1964-04-02
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Granted: 1967-12-19
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Expires: 1984-04-02
Abstract
No abstract record available.
Inventors
- 👤 Koch Karl
- 👤 John M Hoyt
- 👤 Charles E Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:31
CPC Classifications
C; C08; C08G; C08G61/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
IN A POLYMERIZATION PROCESS WHICH COMPRISES REACTING AT LEAST ONE BIS-(A-HALOALKYL)ARENE, CAPABLE OF POLYMERIZATION, HAVING THE FORMULA
Claim 2
Dependent Claim
17 words
IN A POLYMERIZATION PROCESS WHICH COMPRISES REACTING AT LEAST ONE BIS-(A-HALOALKYL)ARENE, CAPABLE OF POLYMERIZATION, HAVING THE FORMULA
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |