Patent application 14080648 (US), filed 2013-11-14
Publication number: US20140141085A1
Title: TRACER PARTICLES, AND METHODS FOR MAKING SAME
CPC codes: G01N  27/72
Y10T 428/2982
Office action: rejection, dated 2015-10-13
Rejection reasons: obviousness_103
Prior art cited: ref_id: 6647649
ref_type: patent
severity: obviousness
Final disposition: pending (2015-10-13)