Appeal No. 2000-1810 Application No. 09/148,556 exemplifies for comparison a composition comprising boron trichloride, hydrogen chloride and chlorine. As argued by appellant, Cote does not disclose the claimed gaseous etchant comprising boron trichloride and an oxygen containing compound. -5-Page: Previous 1 2 3 4 5 6 7 NextLast modified: November 3, 2007