	US 12,220,429 B2
	Hand disinfectant
Geir Hermod Almås, Oslo (NO)
Assigned to WIAB WATER INNOVATION AB, Malmo (SE)
Filed by WIAB Water Innovation AB, Malmo (SE)
Filed on Sep. 16, 2016, as Appl. No. 15/267,220.
Application 15/267,220 is a continuation of application No. 15/167,076, filed on May 27, 2016, granted, now 10,675,299.
Application 15/167,076 is a continuation in part of application No. 14/618,820, filed on Feb. 10, 2015.
Application 15/167,076 is a continuation in part of application No. 14/618,799, filed on Feb. 10, 2015, granted, now 10,577,244.
Application 14/618,820 is a continuation in part of application No. 13/770,738, filed on Feb. 19, 2013, granted, now 9,492,479.
Application 14/618,799 is a continuation of application No. 13/770,738, filed on Feb. 19, 2013, granted, now 9,492,479.
Claims priority of provisional application 61/600,344, filed on Feb. 17, 2012.
Prior Publication US 2017/0000821 A1, Jan. 5, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. A01N 25/08 (2006.01); A61K 9/00 (2006.01); A61K 31/19 (2006.01); A61K 33/20 (2006.01); C01B 11/04 (2006.01)

CPC A61K 33/20 (2013.01) [A61K 9/0014 (2013.01); A61K 31/19 (2013.01); C01B 11/04 (2013.01)]

11 Claims

1. A disinfectant composition comprising:

an aqueous solution of hypochlorous acid (HOCl) and acetic acid (HAc), the HAc present at a higher concentration than the HOCl, wherein the aqueous solution is mixed in an environment that is made air-free by degassing through reduced pressure; and an excipient comprising silica, clay material, glycerol, or cellulose;

wherein the composition is free of air and metal ions and wherein the composition has a pH between 4.0 and 5.0; and

wherein the aqueous solution has been made substantially-free of the metal ions by cycling water through more than one ion exchange cycle to remove CO₃²⁻ ions and HCO₃⁻ ions from the water thereby producing water substantially-free of CO₃²⁻ ions and HCO₃⁻ ions.