Patent application 14706722 (US), filed 2015-05-07
Publication number: US20150307401A1
Title: METHODS AND COMPOSITIONS USING CALCIUM CARBONATE
CPC codes: C04B  28/04
Y02C  20/40
B01D  53/62
B01D2251/404
B01D2257/504
B01D2258/0233
C04B  14/28
C04B  28/02
Y10S 264/43
Office action: rejection, dated 2015-10-19
Rejection reasons: obviousness_103
indefiniteness_112
double_patenting
Prior art cited: ref_id: 1041990
ref_type: patent
severity: obviousness
ref_id: 2008/148055 Constantz et al
ref_type: patent
severity: obviousness
Final disposition: pending (2015-10-19)