Patents Assigned to Ormite, Inc.
  • Synthetic slate
    Patent number: 4073848
    Abstract: A solid, slate-like product, a composition and method of producing the same comprising a substantially uniform mixture of at least five parts by weight of a finely divided taconite iron ore material containing at least about 1 percent magnetite therein and an amine-formaldehyde resin such as urea-formaldehyde or melamine-formaldehyde. The mixture, heated under pressure, forms a dense slate-like material.
    Type: Grant
    Filed: December 21, 1976
    Date of Patent: February 14, 1978
    Assignee: Ormite, Inc.
    Inventor: Melvin C. Kuehn
  • Synthetic slate
    Patent number: 4038242
    Abstract: A solid, slate-like product, a composition and method of producing the same comprising a substantially uniform mixture of at least five parts by weight of a finely divided taconite iron ore material containing at least about 1 percent magnetite therein and an amine-formaldehyde resin such as urea-formaldehyde or melamine-formaldehyde. The mixture, heated under pressure, forms a dense slate-like material.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: July 26, 1977
    Assignee: Ormite, Inc.
    Inventor: Melvin C. Kuehn