Dentistry – Apparatus – Work support
Patent
1990-03-29
1991-10-01
Wilson, John J.
Dentistry
Apparatus
Work support
A61C 114, A61C 304
Patent
active
050529269
ABSTRACT:
A pallet for handling water-permeable dental porcelain materials comprises a porous ceramic material formed of one or two or more selected from the group consisting of materials based on alumina, aluminium silicate, mullite, cordierite, zirconia and vitreous china and having a grain size of 1.0 to 30.0 .mu.m and a mean grain size of 1.5 to 25.0 .mu.m. The porous ceramic material having fine and even pores uniformly dispersed therethrough, as expressed in terms of a porosity of 15 to 65% and a mean pore size of 0.5 to 10 .mu.m.
REFERENCES:
patent: 1278153 (1918-09-01), Jefferies
patent: 1539428 (1924-05-01), Romaine
patent: 1980533 (1932-07-01), Kile
patent: 1982155 (1933-04-01), Earman
patent: 1993450 (1935-03-01), Lowry
patent: 4812119 (1989-03-01), Hewitt
Hino Hiroyuki
Kawasaki Tsugumichi
Cherichetti Cinoy A.
G-C Toshi Kogyo Corporation
Wilson John J.
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