公开(公告)号：WO03029145A9

公开(公告)日：2004-06-17

申请号：PCT/US0231199

申请日：2002-10-01

Applicant: NANOGRAM CORP ,  CHIRUVOLU SHIVKUMAR ,  FORTUNAK YU K

Inventor： CHIRUVOLU SHIVKUMAR ,  FORTUNAK YU K

IPC: C01F7/02 ,  C01F7/30 ,  C01F7/00

CPC classification number: B82Y30/00 ,  C01F7/02 ,  C01F7/027 ,  C01F7/30 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/32 ,  C01P2004/52 ,  C01P2004/64 ,  C01P2006/12

Abstract: Collections of particles are described that include crystalline aluminum oxide selected from the group consisting of delta-A1>23 23

Abstract translation: 描述了包含选自δ-A1> 23 <和THETA-A1> 23的晶体氧化铝的颗粒的集合。 颗粒的平均直径小于约100nm。 颗粒通常具有相当大的BET表面积。 在某些实施方案中，颗粒收集是非常均匀的。 在一些实施方案中，颗粒的集合包括平均直径小于约500nm的掺杂的氧化铝颗粒。 颗粒的集合可以作为涂层沉积。 描述了用于生产所需氧化铝颗粒的方法。

公开(公告)号：EP1448478A4

公开(公告)日：2006-02-08

申请号：EP02776066

申请日：2002-10-01

Applicant: NANOGRAM CORP

Inventor： CHIRUVOLU SHIVKUMAR ,  FORTUNAK YU K

IPC: C01F7/02 ,  C01F7/30 ,  C01F7/00

CPC classification number: B82Y30/00 ,  C01F7/02 ,  C01F7/027 ,  C01F7/30 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/32 ,  C01P2004/52 ,  C01P2004/64 ,  C01P2006/12

Abstract: Collections of particles are described that include crystalline aluminum oxide selected from the group consisting of delta-A12O3 and theta-A12O3. The particles have an average diameter less than about 100 nm. The particles generally have correspondingly large BET surface areas. In certain embodiments, the particle collections are very uniform. In some embodiments, collections of particles include doped aluminum oxides particles with an average diameter less than about 500 nm. The collections of particles can be deposited as coatings. Methods are described for producing desired aluminum oxide particles.