US2508801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for the polymerization of vinyl compounds
Assignee: Compagnie de Saint Gobain SA
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Filing: 1945-06-30
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Granted: 1950-05-23
•
Expires: 1965-06-30
Abstract
No abstract record available.
Inventors
- 👤 Sans Marcel Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:58
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS FOR THE BULK POLYMERICATION OF VINYL CHLORIDE THAT INCLUDES THE STEPS OF HEATING VINYL CHLORIDE TO POLYMERIZING TEMPERATURE IN LIQUID PHASE IN THE PRESENCE OF A PEROXIDE CATALYST CONTAINING LESS THAN 0.15% ACTIVE OXYGEN BASED ON MONOMER WEIGHT AND IN THE PRESENCE OF A METALLIC SALT CAPABLE OF REACTING WITH HC1, WITH AGITATION.
Claim 2
Dependent Claim
55 words
A PROCESS FOR THE BULK POLYMERICATION OF VINYL CHLORIDE THAT INCLUDES THE STEPS OF HEATING VINYL CHLORIDE TO POLYMERIZING TEMPERATURE IN LIQUID PHASE IN THE PRESENCE OF A PEROXIDE CATALYST CONTAINING LESS THAN 0.15% ACTIVE OXYGEN BASED ON MONOMER WEIGHT AND IN THE PRESENCE OF A METALLIC SALT CAPABLE OF REACTING WITH HC1, WITH AGITATION.
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Cited
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Cited
US2068424A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |