Patent US2846418A successfully refreshed from Google Patents.
US2846418A
Expired / Lapsed
US
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Process for the production of polymerisation products
Assignee: WC Heraus GmbH and Co KG
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Filing: 1953-11-12
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Granted: 1958-08-05
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Expires: 1973-11-12
Abstract
No abstract record available.
Inventors
- 👤 Bredereck Hellmut
- 👤 Bader Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:40
CPC Classifications
C; C08; C08F; C08F4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN THE PROCESS OF BULK POLYMERIZING A POLYMERIZABLE VINYL COMPOUND HAVING A TERMINAL DOUBLE BOND LINKED TO A METHYLENE GROUP, IN THE PRESENCE OF A FORMED POLYMER OF SAID VINYL COMPOUND, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE POLYMERIZATION IN THE PRESENCE OF A SALT OF AN ORGANIC AMINE AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH SALTS OF A SULFINIC ACID.
Claim 2
Dependent Claim
66 words
IN THE PROCESS OF BULK POLYMERIZING A POLYMERIZABLE VINYL COMPOUND HAVING A TERMINAL DOUBLE BOND LINKED TO A METHYLENE GROUP, IN THE PRESENCE OF A FORMED POLYMER OF SAID VINYL COMPOUND, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE POLYMERIZATION IN THE PRESENCE OF A SALT OF AN ORGANIC AMINE AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH SALTS OF A SULFINIC ACID.
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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |