US2547150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of butadiene hydrocarbons in the presence of a trithiocarbonate
Assignee: Monsanto Chemicals Ltd
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Filing: 1944-11-07
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Granted: 1951-04-03
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Expires: 1964-11-07
Abstract
No abstract record available.
Inventors
- 👤 Edward S Blake
- 👤 John R Durland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:46
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
THE PROCESS OF REGULATING POLYMERIZATION WHICH COMPRISES POLYMERIZING A MONOMERIC MIXTURE CONTAINING A BUTADIENE-1,3 HYDROCARBON AND STYRENE IN THE FORM OF AN AQUEOUS EMULSION IN THE PRESENCE OF AN EFFECTIVE AMOUNT LESS THAN 1% BASED ON THE TOTAL MONOMERS PRESENT OF A TRITHIOCARBONATE POSSESSING THE STRUCTURE
References Cited (Backward Citations)
US2376339A
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US2380400A
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US2380401A
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US2380402A
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US2396997A
Cited
US2430562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |