LI; Chengzhi

Patent Applications and Registrations

Patent applications and USPTO patent grants for LI; Chengzhi.The latest application filed is for "polyphosphoric acid calcium magnesium fertilizer, polyphosphoric acid calcium magnesium fertilizer prepared by using phosphoric acid and phosphorus tailings as raw materials and preparation method therefor".

Company Profile

6.2.8

LI; Chengzhi - Linyi Shandong
Li; Chengzhi - Shandong CN
LI; Chengzhi - Beijing CN
Li; Chengzhi - Wuxi CN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Polyphosphoric Acid Calcium Magnesium Fertilizer, Polyphosphoric Acid Calcium Magnesium Fertilizer Prepared By Using Phosphoric Acid And Phosphorus Tailings As Raw Materials And Preparation Method Therefor App 20210032173 - HU; Zhaoping ; et al.	2021-02-04
Method for producing phosphoric acid and by-producing alpha-hemihydrate gypsum by wet-process Grant 10,745,278 - Hu , et al. A	2020-08-18
Method for producing wet-process phosphoric acid and by-producing alpha-hemihydrate gypsum and high-purity and high-whiteness alpha-hemihydrate gypsum Grant 10,696,552 - Hu , et al. June 30, 2	2020-06-30
Speech Recognition Error Correction Method And Apparatus App 20200082808 - LI; Chengzhi ; et al.	2020-03-12
Igbt Short-circuit Detection And Protection Circuit And Igbt-based Controllable Rectifier Circuit App 20190386483 - Miao; Yu ; et al.	2019-12-19
Method For Speech Recognition Dictation And Correction By Spelling Input, System And Storage Medium App 20190279623 - LIU; Yu ; et al.	2019-09-12
Method For Speech Recognition Dictation And Correction, And System App 20190279622 - LIU; Yu ; et al.	2019-09-12
Igbt Short-circuit Detection And Protection Circuit And Igbt-based Controllable Rectifier Circuit App 20180287372 - Miao; Yu ; et al.	2018-10-04
Method For Producing Wet-process Phosphoric Acid And By-producing Alpha-hemihydrate Gypsum And High-purity And High-whiteness Alpha-hemihydrate Gypsum App 20180273384 - Hu; Zhaoping ; et al.	2018-09-27
Method For Producing Phosphoric Acid And By-producing Alpha-hemihydrate Gypsum By Wet-process App 20180257938 - Hu; Zhaoping ; et al.	2018-09-13

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