Patent JPS635263A successfully refreshed from Google Patents.
Patent US2729615A successfully refreshed from Google Patents.
US2729615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of polymerisation products obtained from acrylic acid derivatives
Assignee: Imperial Chemical Industries Ltd
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Filing: 1953-01-21
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Granted: 1956-01-03
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Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Bloom George Isaac Maurice
- 👤 Duddington Jack Ernest
- 👤 Vincent Mervyn Frederick
- 👤 Willbourn Anthony Horace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:32
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROCESS WHICH COMPRISES POLYMERIZING AN ESTER OF ALPHA-CHLOROACRYLIC ACID IN THE PRESENCE OF A COMPOUND CONTAINING AN EPOXY GROUP SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, EPICHLOROHYDRIN, PHENYL GLYCIDYL ETHER, DIALLYL ETHR MONOXIDE AND POLY-DIALLYL ETHER MONOXIDE.
Claim 2
Dependent Claim
41 words
A PROCESS WHICH COMPRISES POLYMERIZING AN ESTER OF ALPHA-CHLOROACRYLIC ACID IN THE PRESENCE OF A COMPOUND CONTAINING AN EPOXY GROUP SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, EPICHLOROHYDRIN, PHENYL GLYCIDYL ETHER, DIALLYL ETHR MONOXIDE AND POLY-DIALLYL ETHER MONOXIDE.
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |