29. ൟఆകࢺ ٜ۹೭ (US 7,115,021)
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1. An abrasive comprising cerium oxide particles, said
particles having a crystal grain boundary and
having a maximum diameter of not large than 3000
nm.
2. The abrasive of claim 1, wherein a crystallite of
said cerium oxide particles has a maximum
diameter of not larger than 600 nm.
3. The abrasive of claim 1, wherein said cerium oxide
particles have pores.
ы ਿ ଫ ੌ۸ࠒఛ Үࢺص҅ ѹܻҀܮ цג
ࢌക ࢼܧ ੌܮ Ďݍ ࠔࢌडே؈ छۙܶܮ ಣೞ
ࢌക ࢼܧ ܾ
30. BLT patent law firm
Beyond the Limit, Together!