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Legal status
Patent not validated
| (51) | INT.CL. | C08F 255/06 | |
| C08F 279/00 | |||
| C08G 65/00 |
| (11) | Number of the document | 1976896 |
| (13) | Kind of document | T |
| (96) | European patent application number | 06849274.3 |
| Date of filing the European patent application | 2006-12-28 | |
| (97) | Date of publication of the European application | 2008-10-08 |
| (45) | Date of publication and mention of the grant of the patent | 2011-06-15 |
| (46) | Date of publication of the claims translation |
| (86) | Number | PCT/US2006/049706 |
| Date | 2006-12-28 |
| (87) | Number | WO 2007/081596 |
| Date | 2007-07-19 |
| (30) | Number | Date | Country code |
| 328662 | 2006-01-10 | US |
| (72) |
ZHAO, Hong, US
MARTINEZ, Anthony, J., US
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| (73) |
Enzon Pharmaceuticals, Inc.,
685 Route 202/206, Bridgewater, New Jersey 08807,
US
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| (54) | HIGH EFFICIENCY METHOD OF PREPARING POLYALKYLENE OXIDE CARBOXYLIC ACIDS |
| HIGH EFFICIENCY METHOD OF PREPARING POLYALKYLENE OXIDE CARBOXYLIC ACIDS |