Patent application 13273568 (US), filed 2011-10-14
Publication number: US20120093323A1
Title: AUDIO SYSTEM AND METHOD OF DOWN MIXING AUDIO SIGNALS USING THE SAME
CPC codes: H04S   3/00
H04S2400/03
Office action: rejection, dated 2015-10-16
Rejection reasons: obviousness_103
Prior art cited: ref_id: 20090034764
ref_type: patent
severity: obviousness
ref_id: 20110164755
ref_type: patent
severity: obviousness
ref_id: 20080063226
ref_type: patent
severity: obviousness
Final disposition: rejected (2015-10-16)