Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12397287 | Pretreatment process of resin catalyst for synthesizing bisphenol A | He Dong, Hao Gong, Guochao Yang, Yingzhe Yu | 2025-08-26 |
| 12371395 | Bisphenol a preparation process and device thereof | Yingzhe Yu, Hao Gong, He Dong, Feng Shi, Haoxi Jiang | 2025-07-29 |
| 12344575 | Process for reducing by-products in bisphenol A reaction system | Yingzhe Yu, Hao Gong, He Dong, Sheng Wang | 2025-07-01 |
| 12071387 | Thermal coupling method for preparing ethylene by ethanol dehydration and device thereof | Hao Gong, He Dong, Feng Shi, Fang MENG, Yingzhe Yu +1 more | 2024-08-27 |
| 12049442 | Preparation method of vinyl acetate by ethylene process and device thereof | Hao Gong, He Dong, Zhongfeng Geng, Yingzhe Yu | 2024-07-30 |
| 11939286 | Method for producing vinyl acetate | Zhongfeng Geng, He Dong, Hao Gong, Yingzhe Yu, Shenghua Qian +1 more | 2024-03-26 |
| 9636627 | Method for recovering ethylene during the process for producing VAC and a device thereof | Xiuqin Dong, Cheng-Hsiang Liu, Minli Tao, Yonghui Li, Huisheng Lv +2 more | 2017-05-02 |
| 5663456 | Method for obtaining large crystals with high purity by destructing part of fines in slurry in a crystallizer | Zongzhang Liu, Shenbo Yu, Chuanzhao Li, Shenghua Qian | 1997-09-02 |
| 5648561 | Process for the production of high purity and ultrapure bisphenol-A | Qiu Tan, Shenbo Yu, Zongzhang Liu, Shenghua Qian, Chuanzhao Li | 1997-07-15 |
| 5629457 | Dephenolizing process for production of high-quality polycarbonate grade bisphenol A | Zongzhang Liu, Shenbo Yu, Shenghua Qian, Chuanzhao Li | 1997-05-13 |