This inventor holds 2 USPTO granted patents, plus 1 CIPO patent and 1 EPO patent. Top assignee: Arysta Lifescience Corporation. Active years: 2020-2021.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2020-2021
Title: Innovations by David Huang in Phosphoramidothioate Chemistry
Introduction
David Huang is a notable inventor based in Kunshan, China. He has made significant contributions to the field of chemistry, particularly in the preparation of phosphoramidothioates. With a total of two patents to his name, Huang's work showcases his expertise and innovative approach to chemical processes.
Latest Patents
Huang's latest patents include a detailed process for the preparation of O,O-dimethyl phosphoramidothioate and N-(methoxymethylsulfanylphosphoryl) acetamide. This process involves several intricate steps, starting with the reaction of sulfur with phosphorus trichloride (PCl) to form phosphorus thiochloride (PSCl). The PSCl is then reacted with methanol to produce O-methyl phosphorodichloridothioate. Following this, the O-methyl phosphorodichloridothioate is treated with methyl lye to yield O,O-dimethyl phosphorochloridothioate in a chloroform solution. The subsequent reaction with sodium hydroxide and ammonium hydroxide leads to the formation of O,O-dimethyl phosphoroamidothioate, which is also maintained in solution throughout the process. Additionally, Huang describes the reaction of O,O-dimethyl phosphoroamidothioate with catalytic dimethyl sulfate to produce
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile