Li; Woyuan
Patent Applications and Registrations
Patent applications and USPTO patent grants for Li; Woyuan.The latest application filed is for "high molecular weight polyphenylene sulfide resin, preparation method and use thereof".
- Li; Woyuan - Zhejiang CN
- Li; Woyuan - Shaoxing CN
- Li; Woyuan - Shangyu CN
| Patent | Date |
|---|---|
| Preparation method of polyphenylene sulfide resin, and polyphenylene sulfide resin prepared thereby Grant 11,440,996 - Li , et al. September 13, 2 | 2022-09-13 |
| Preparation method for 4-phenylthio-benzenethiol Grant 11,220,478 - Chen , et al. January 11, 2 | 2022-01-11 |
| High Molecular Weight Polyphenylene Sulfide Resin, Preparation Method and Use Thereof App 20210047471 - CHEN; Zhirong ; et al. | 2021-02-18 |
| Preparation Method For 4-phenylthio-benzenethiol App 20210009514 - CHEN; Zhirong ; et al. | 2021-01-14 |
| Preparation Method Of Polyphenylene Sulfide Resin, And Polyphenylene Sulfide Resin Prepared Thereby App 20200347186 - LI; Woyuan ; et al. | 2020-11-05 |
| Fiber grade polyphenylene sulfide resin synthesis method Grant 9,567,440 - Chen , et al. February 14, 2 | 2017-02-14 |
| A Fiber-grade Polyphenylene Sulfide Resin Synthesis Method App 20150344632 - CHEN; ZHIRONG ; et al. | 2015-12-03 |
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