Patents by Inventor Asdrubal Trevino-Alanis

Asdrubal Trevino-Alanis 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).

  • Passivation of sponge iron
    Patent number: 4388116
    Abstract: Sponge iron pellets are protected against re-oxidation by pre-wetting them with water or steam, coating them with a pulverulent passivating agent which is a mixture of iron oxide particles and hydraulic cement particles, then drying the treated pellets. Especially good results are achieved by using a hydraulic cement such as Portland cement and an iron oxide/cement ratio of 40:60 to 70:30.
    Type: Grant
    Filed: August 4, 1981
    Date of Patent: June 14, 1983
    Assignee: Hylsa, S.A.
    Inventors: David H. Carrillo-Cantu, Asdrubal Trevino-Alanis