Patent ID: 7153196

Claim:
A method of using a polishing agent comprising mother particles and abrading particles on surfaces of said mother particles and a lapping plate made of a metallic or ceramic material to polish a target object; said method comprising the steps of; supplying a specified amount of said polishing agent directly between said lapping plate and said target object to be polished, said lapping plate having a flat and smooth surface with a diameter greater than that of said target object and said mother particles comprising spherical polymers and having an average diameter of 1–20 μm, the average diameter of said abrading particles being 1/200– 1/20of the average diameter of said mother particles; and causing said lapping plate to rotate at a specified rotational speed so as to move relative to said target object while keeping said lapping plate practically in contact with said target object while a lapping process is carried out on said target object.