US2543094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing vinylidene compounds
Assignee: Distillers Co Yeast Ltd
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Filing: 1947-07-08
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Granted: 1951-02-27
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Expires: 1967-07-08
Abstract
No abstract record available.
Inventors
- 👤 Brighton Cyril Alfred
- 👤 Staudinger Johann Josef Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:06
CPC Classifications
C; C08; C08F; C08F283/00; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A PROCESS OF POLYMERISATION WHICH COMPRISES POLYMERISING AN AQUEOUS DISPERSION OF A MONOMERIC POLYMERISABLE MATERIAL CONTAINING AT LEAST 88% BY WEIGHT OF VINYLIDENE CHLORIDE AND A WATER-SOLUBLE UREA-FORMALDEHYDE CONDENSATION PRODUCT AS DISPERSING AGENT IN AN AMOUNT OF 0.5 TO 10% BY WEIGHT OF THE MONOMERIC MATERIAL.
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) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |