US 12,279,639 B2
Gamma cyclodextrin flavoring-release additives
Munmaya K. Mishra, Manakin Sabot, VA (US); Susan E. Wrenn, Chesterfield, VA (US); and Jay A. Fournier, Richmond, VA (US)
Assigned to Philip Morris USA Inc., Richmond, VA (US)
Filed by Philip Morris USA Inc., Richmond, VA (US)
Filed on May 23, 2023, as Appl. No. 18/322,011.
Application 18/322,011 is a continuation of application No. 16/724,578, filed on Dec. 23, 2019, granted, now 11,690,395.
Application 16/724,578 is a continuation of application No. 15/583,462, filed on May 1, 2017, granted, now 10,537,131, issued on Jan. 21, 2020.
Application 15/583,462 is a continuation of application No. 14/519,792, filed on Oct. 21, 2014, granted, now 9,668,519, issued on Jun. 6, 2017.
Application 14/519,792 is a continuation of application No. 12/791,614, filed on Jun. 1, 2010, granted, now 8,864,909, issued on Oct. 21, 2014.
Application 12/791,614 is a continuation of application No. 11/702,617, filed on Feb. 6, 2007, abandoned.
Claims priority of provisional application 60/771,462, filed on Feb. 9, 2006.
Prior Publication US 2023/0345996 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A24B 15/28 (2006.01); A24B 15/16 (2020.01); A24C 5/01 (2020.01); A24D 1/20 (2020.01); A24F 40/10 (2020.01)
CPC A24B 15/16 (2013.01) [A24B 15/283 (2013.01); A24B 15/284 (2013.01); A24D 1/20 (2020.01); A24F 40/10 (2020.01); A24C 5/01 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A flavoring-release additive for a smoking article, the flavoring-release additive comprising:
gamma cyclodextrin having a ring structure that includes hydrophobic cavities;
a flavoring incorporated within the hydrophobic cavities of the gamma cyclodextrin, the flavoring configured to undergo a controlled release from the hydrophobic cavities upon exposure of the flavoring-release additive to a first temperature, and the flavoring being present in an amount of at least 23% by weight of the flavoring-release additive; and
an encapsulating material that at least partially encapsulates the gamma cyclodextrin.