Patents by Inventor Hans Christian A. Nielsen

Hans Christian A. Nielsen 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).

  • Process for producing hydraulic cement from dicalcium silicate
    Patent number: 4472202
    Abstract: A process for producing hydraulic cement from dicalcium silicate, wherein the dicalcium silicate is mixed and ground with calcareous correction materials to produce a cement raw mixture which is preheated by suspending the raw mixture in a hot gas, and subsequently sintering the preheated material to cement clinker.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: September 18, 1984
    Assignee: Industrias Penoles S.A. de C.V.
    Inventors: Hans Christian A. Nielsen, Roberto Schroeder