Notes
i. Patent 6095402/200 (USA).
ii. Patent 2005/0006440 (USA).
iii. Patent 7125227/2006 (USA).
iv. Patent 2271816/2004 (GB).
v. Patent 323490/2002 (EP), 10260465/2004 (DE).
vi. Patent 213088/2001, 0624418/1997, 0404531/1993 (EP).
vii. Patent 6219916/2001 (USA).
viii. Patent 5865364/1996 (US).
ix. Patent 1604770/2005 (EP).
x. Patent 101020275/2007 (CN).
xi. Patent 0937531/1998 (EP).
xii. Patent 2005/0127140, 2007/0090155 (USA).
xiii. Patent 97/3814 (PCT/US).
xiv. Patent 6237384 (USA).