Patent ID: 7507254

Claim:
A method for preparing inorganic bone graft materials, said method consisting of: 1) removing, from an animal, a compact bone from bone using a bone saw and obtaining a cancellous bone; 2) making bone powder by pulverizing the cancellous bone minutely; 3) washing the bone powder with distilled water; 4) removing lipids from the washed bone powder using diethyl ether; 5) removing diethyl ether from the bone powder using ethanol; 6) washing the bone powder of step 5 to remove ethanol using distilled water; 7) removing organic materials, including proteins present after the preceding steps, from the bone powder of step 6 using sodium hypochlorite and hydrogen peroxide; 8) washing the bone powder of step 7 using distilled water; and 9) lyophilizing the bone powder of step 8 with a freeze drier, thereby producing inorganic bone graft material, wherein the inorganic bone graft material is free from organic material.