Patent US2840549A successfully refreshed from Google Patents.
US2840549A
Expired / Lapsed
US
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Alkyl phenoxy polyoxyethylene ethanol as a dispersant in the polymerization of monoethylenically unsaturated materials
Assignee: Diamond Shamrock Corp
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Filing: 1954-06-10
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Granted: 1958-06-24
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Expires: 1974-06-10
Abstract
No abstract record available.
Inventors
- 👤 Mcnulty Dorothy Grace
- 👤 Robert I Leininger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:25
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE PROCESS OF PRODUCING A HIGH QUANLITY POLYMER WHICH CONSISTS ESSENTIALLY OF DISPERSING IN WATER, AS A SUSPENSION WHICH SETTLES RAPIDLY WHEN AGITATION IS DISCONTINUED, A POLYMERIZABLE MONOETHYLENIC MONOMER WITH THE AID OF UP TO ABOUT 1.0% BY MONOMER WEIGHT OF AN ALKYL PHENOXY POLYOXYETHYLENE ETHANOL AND POLYMERIZING SAID MONOMER WHILE SO SUSPENDED.
Claim 2
Dependent Claim
53 words
THE PROCESS OF PRODUCING A HIGH QUANLITY POLYMER WHICH CONSISTS ESSENTIALLY OF DISPERSING IN WATER, AS A SUSPENSION WHICH SETTLES RAPIDLY WHEN AGITATION IS DISCONTINUED, A POLYMERIZABLE MONOETHYLENIC MONOMER WITH THE AID OF UP TO ABOUT 1.0% BY MONOMER WEIGHT OF AN ALKYL PHENOXY POLYOXYETHYLENE ETHANOL AND POLYMERIZING SAID MONOMER WHILE SO SUSPENDED.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |