Back to results
US 6,203,774 B1Granted
Method for producing iron oxide powder using a particle size and shape controller
AssigneeKorea Institute of Science and Technology
InventorsKyong-Sop Han, Dong-Sik Bae, Jun Seok Noh, Sang Heul Choi, Seung Beom Cho
Life of this patent
Estimating the term…
Abstract
A method for producing iron oxide powder, of which the particle size and shape are controlled, comprising the steps of dissolving α-FeOOH in a glycol as a solvent to provide a solution; adding a controller for particle size and shape of the powder to the solution to provide a mixture; and reacting the mixture at a temperature of 150 to 300 ° C. for 1 to 48 hours.
Claims7
A method for producing iron oxide powder, of which the particle size and shape are controlled, comprising the steps of:
- (i) dissolving α-FeOOH in propylene glycol as a solvent to provide a solution;
- (ii) adding a controller for particle size and shape of the powder to the solution to provide a mixture;
- and
- (iii) reacting the mixture at a temperature of 150 to 300° C. for 1 to 48 hours.
1 more element
Dependencies are inferred from the claim text.