Patent US2776952A successfully refreshed from Google Patents.
US2776952A
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Improvements in the production of polymerization products using halogen compounds toincrease the effectiveness of sulfone polymerization catalysts
Assignee: WC Heraus GmbH and Co KG
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Filing: 1952-10-31
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Granted: 1957-01-08
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Expires: 1972-10-31
Abstract
No abstract record available.
Inventors
- 👤 Bredereck Hellmut
- 👤 Bader Erich
- 👤 Nubling Wolfgang
- 👤 Wohnhas Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:31
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/38; A; A61; A61K; A61K6/00; A61K6/50; A61K6/54; A61K6/80; A61K6/884; A61K6/887; C08F4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
IN A METHOD FOR THE PRODUCTION OF POLYMERIZATION PRODUCTS, INCLUDING MOLDED BODIES FROM POLYMERIZABLE ORGANIC COMPOUNDS HAVING A TERMINAL CARBON-CARBON DOUBLE BOND, IN THE PRESENCE OF A POLYMERIZATION ACTIVATOR, HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
33 words
IN A METHOD FOR THE PRODUCTION OF POLYMERIZATION PRODUCTS, INCLUDING MOLDED BODIES FROM POLYMERIZABLE ORGANIC COMPOUNDS HAVING A TERMINAL CARBON-CARBON DOUBLE BOND, IN THE PRESENCE OF A POLYMERIZATION ACTIVATOR, HAVING THE GENERAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |