Company Filing History:

3 out of 159

Petrochina Company Limited

patents

Years Active: 2007-2014

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3 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 8822389 - Dendritic comb-shaped polymer thickening agent, preparaton of the same and application thereof (2014-09-02),

2. 7867952 - Flexible polymer, particles prepared therefrom and process for preparing the same (2011-01-11),

3. 7304116 - Braided comb-shaped salt-resistant polymer thickening agent (2007-12-04),

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Company Filing History:

Years Active: 2007-2014