Patents by Inventor Dagen DOU

Dagen DOU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200130065
    Abstract: A method for producing a water-atomized prealloyed powder with high cold press formability, includes the following steps: (a) preparing a ?400 mesh semi-finished prealloyed powder; (b) controlling the semi-finished prealloyed powder to have a moisture content of 1 wt % to 2 wt % and an oxygen content of 0.6 wt % to 0.8 wt %, and then drying in a vacuum drying oven at 100° C. for 90 minutes to 120 minutes, so that a preliminary bond is produced between powder particles; and (c) reducing, annealing, crushing, and sieving an initially bonded powder particle. The powder is changed from a spheroidal shape to more complex shapes such as “rice ear shape”, “grape shape”, and “satellite powder”, which greatly improves the cold press formability of the prealloyed powder; the method only performs simple surface modification of the powder without changing other properties, and has wide applicability.
    Type: Application
    Filed: December 17, 2019
    Publication date: April 30, 2020
    Inventors: Xiaofeng LI, Anding FAN, Dagen DOU, Yanan LU, Wenwen AN