Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Reexamination Certificate
2007-10-09
2007-10-09
Zimmerman, John J. (Department: 1775)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
C428S304400, C428S307300, C501S080000, C501S084000, C424S422000, C424S426000, C065S021400
Reexamination Certificate
active
10996434
ABSTRACT:
A porous calcium phosphate ceramic comprising a support portion having pores, and ring-shaped portions formed in the pores, the ring-shaped portions having pluralities of fine pores so that they have a network structure. A method for producing a porous calcium phosphate ceramic comprising stirring a slurry containing coarse calcium phosphate particles, fine calcium phosphate particles, a nonionic surfactant and a water-soluble high-molecular compound to foam the slurry; gelling the foamed slurry; and then drying the resultant get to obtain a sintered porous calcium phosphate ceramic; the nonionic surfactant being malamide and/or polyoxyethylene lauryl ether.
REFERENCES:
patent: 4371484 (1983-02-01), Inukai et al.
patent: 6340648 (2002-01-01), Imura et al.
patent: 2002/0114938 (2002-08-01), Matsumoto
patent: 1155705 (2001-11-01), None
patent: 2000-302567 (2000-10-01), None
English language Abstract of JP 2000-302456, Published Oct. 31, 2000.
Austin Aaron
PENTAX Corporation
Zimmerman John J.
LandOfFree
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