Patent US2683140A successfully refreshed from Google Patents.
US2683140A
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Polymerization of ethylenically unsaturated compounds with vanadous catalyst
Assignee: EIDP Inc
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Filing: 1950-12-19
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Granted: 1954-07-06
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Expires: 1970-12-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward G Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:12
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; Y; Y10; Y10S; Y10S526/00; Y10S526/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
IN THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS SUBJECT TO ADDITION POLYMERIZATION BY REASON OF A NONAROMATIC CARBONCARBON DOUBLE BOND, THE IMPROVEMENT WHEREIN THE MONOMER IS POLYMERIZED BY BRINGING THE SAME IN CONTACT, IN AQUEOUS DISPERSION, WITH VANADOUS, V++, ION AS THE SOLE REDUCING AGENT AND A HYDROXYLAMINO COMOUND.
Claim 2
Dependent Claim
48 words
IN THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS SUBJECT TO ADDITION POLYMERIZATION BY REASON OF A NONAROMATIC CARBONCARBON DOUBLE BOND, THE IMPROVEMENT WHEREIN THE MONOMER IS POLYMERIZED BY BRINGING THE SAME IN CONTACT, IN AQUEOUS DISPERSION, WITH VANADOUS, V++, ION AS THE SOLE REDUCING AGENT AND A HYDROXYLAMINO COMOUND.
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) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |