US 11,925,717 B2
Microbial disinfection for personal protection equipment
James Chongchu Chen, Clyde Hill, WA (US); Celesta Jane Bjornson, Seattle, WA (US); John David Bjornson, Seattle, WA (US); LuAnn Lawton Chen, Clyde Hill, WA (US); Stephanie Marie Chong-Ming Chen, Makawao, HI (US); Daniel Duong Hoang, Seattle, WA (US); Kathleen Clare Lendvay, Seattle, WA (US); and Paul Deven Rolley, Chicago, IL (US)
Assigned to Singletto Inc., Seattle, WA (US)
Filed by Singletto Inc., Seattle, WA (US)
Filed on Oct. 3, 2022, as Appl. No. 17/958,639.
Application 17/958,639 is a continuation of application No. 17/522,811, filed on Nov. 9, 2021, granted, now 11,458,220.
Claims priority of provisional application 63/192,980, filed on May 25, 2021.
Claims priority of provisional application 63/113,060, filed on Nov. 12, 2020.
Prior Publication US 2023/0035662 A1, Feb. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A41D 13/11 (2006.01); A61L 2/00 (2006.01); A61L 2/18 (2006.01); A61L 2/20 (2006.01)
CPC A61L 2/18 (2013.01) [A61L 2/0076 (2013.01); A61L 2/20 (2013.01); A41D 13/11 (2013.01); A41D 13/1192 (2013.01); A61L 2202/11 (2013.01); A61L 2202/15 (2013.01); A61L 2202/16 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An article, comprising:
a substrate that is arranged as one or more of a mask or a face covering; and
a photosensitizer formulation disposed on, or disposed in, the substrate along one or more dimensions of the substrate, wherein activation of the photosensitizer formulation, by radiation with one or more ultrasound wavelengths, generates microbicidal singlet oxygen in the presence of molecular oxygen that is configured to cause damage to one or more microbes to produce one or more immunogenic particles for inhalation by a user of the one or more of the mask or the face covering, wherein the radiation of the one or more ultrasound wavelengths is arranged to propel molecules of microbial singlet oxygen.