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Patent US2564291A successfully refreshed from Google Patents.
US2564291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homopolymerization of vinyl chloride in aqueous medium with phenol-aldehyde condensation product as emulsifying agent
Assignee: Goodrich Corp
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Filing: 1948-07-03
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Granted: 1951-08-14
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Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Robert J Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:27
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; C08F283/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD WHICH COMPRISES PREPARING A REACTION MEDIUM CONSISTING OF VINYL CHLORIDE AND AN AQUEOUS PHASE CONSISTING SOLELY OF WATER, A PEROXYGEN COMPOUND, AND FROM 0.5 TO 10% BY WEIGHT BASED ON THE VINYL CHLORIDE OF A WATERSOLUBLE PHENOL-ALDEHYDE CONDENSATION PRODUCT, AND AGITATING SAID MEDIUM TO POLYMERIZE SAID VINYL CHLORIDE.
Claim 2
Independent Claim
50 words
THE METHOD WHICH COMPRISES PREPARING A REACTION MEDIUM CONSISTING OF VINYL CHLORIDE AND AN AQUEOUS PHASE CONSISTING SOLELY OF WATER, A PEROXYGEN COMPOUND, AND FROM 0.5 TO 10% BY WEIGHT BASED ON THE VINYL CHLORIDE OF A WATERSOLUBLE PHENOL-ALDEHYDE CONDENSATION PRODUCT, AND AGITATING SAID MEDIUM TO POLYMERIZE SAID VINYL CHLORIDE.
References Cited (Backward Citations)
US2279436A
Cited
US2404791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |