Method and device for producing binderless briquettes and...

Specialized metallurgical processes – compositions for use therei – Processes – Consolidating metalliferous material by agglomerating,...

Reexamination Certificate

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C419S038000, C419S066000

Reexamination Certificate

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07981192

ABSTRACT:
The invention relates to a process for producing binderless briquettes from metal chips and metal dusts in which the metal chips are pressed into a cup-shaped form and the upwardly open cavity produced as a result is filled with metal dust, after which the opening is closed with a cover consisting of pressed metal chips.

REFERENCES:
patent: 2331074 (1943-10-01), Jones
patent: 3249039 (1966-05-01), Yo Jonghe
patent: 3864092 (1975-02-01), Ravitz
patent: 3899821 (1975-08-01), Ito et al.
patent: 4889555 (1989-12-01), Szekely et al.
patent: 2003/0075014 (2003-04-01), Ishihara et al.
patent: 2004/0067155 (2004-04-01), Girshov et al.
patent: 4416699 (1994-12-01), None
patent: 08188834 (1996-07-01), None
patent: 2000192156 (2000-07-01), None
patent: 1806211 (1993-03-01), None
patent: 1595630 (1990-09-01), None
Derwent Acc No. 1991-169923, abstract of SU 1595630 A, published Sep. 30, 1990.
Derwent Acc No. 1989-239742, abstract of SU 1458080 A, published Feb. 15, 1989.

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