Patent ID: 11884542
Assignee: B. BRAUN SURGICAL, S.A.
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A  B  H  Y | IPC A  B  C  H

Claim 1:
2. A process for obtaining a permanently polarized hydroxyapatite according to claim 1, comprising the steps of:
(a) obtaining sintered samples of hydroxyapatite and/or amorphous calcium phosphate at a temperature between 700° C. and 1200° C.;
(b) applying a constant or variable DC voltage between 250 V and 2500 V or an equivalent electric field between 1.49 kV/cm and 15 kV/cm for at least 1 minute at a temperature between 900° C. and 1200° C. or
applying an electrostatic discharge between 2500 V and 1500000 V or an equivalent electric field between 148.9 kV/cm and 8928 kV/cm for less than 10 minutes at a temperature between 900° C. and 1200° C.;

(c) cooling the samples while applying the constant or variable DC voltage or the equivalent electric field or
cooling the samples while applying the electrostatic discharge or the equivalent electric field.