US 11,944,118 B2
Aerosol-generating article and aerosol-generating systems
Bong Su Cheong, Daejeon (KR); Dong Kyun Ko, Sejong (KR); Jae Sung Noh, Cheonan-si (KR); Sang Won Choi, Daejeon (KR); and Jung Seop Hwang, Daejeon (KR)
Assigned to KT&G CORPORATION, Daejeon (KR)
Appl. No. 17/265,705
Filed by KT&G CORPORATION, Daejeon (KR)
PCT Filed Nov. 13, 2019, PCT No. PCT/KR2019/015427
§ 371(c)(1), (2) Date Feb. 3, 2021,
PCT Pub. No. WO2020/105945, PCT Pub. Date May 28, 2020.
Claims priority of application No. 10-2018-0146531 (KR), filed on Nov. 23, 2018.
Prior Publication US 2021/0307380 A1, Oct. 7, 2021
Int. Cl. A24D 1/02 (2006.01); A24D 1/20 (2020.01); A24D 3/17 (2020.01)
CPC A24D 1/025 (2013.01) [A24D 1/20 (2020.01); A24D 3/17 (2020.01)] 11 Claims
OG exemplary drawing
 
1. An aerosol-generating article comprising:
a tobacco rod;
a front-end plug arranged on a side of the tobacco rod;
a filter rod arranged on the other side of the tobacco rod; and
a wrapper surrounding the tobacco rod, the front-end plug, and the filter rod, wherein
the wrapper comprises at least one thermochromic material that is configured to be heated and discolored by an aerosol-generating device when the aerosol-generating article is inserted into the aerosol-generating device,
wherein the wrapper further comprises:
an inner wrapper surrounding at least one from among the tobacco rod, the front-end plug, and the filter rod; and
an outer wrapper surrounding the inner wrapper,
wherein the at least one thermochromic material is included in the inner wrapper, and
wherein at least a portion of the outer wrapper, that overlaps the at least one thermochromic material, is made of a semitransparent or transparent material.