IP Library Granted Patent US 12,558,300
Granted Patent B1
US 12,558,300 · App. 18/596,620 · Granted Feb 24, 2026

Effervescent foot bath and method

Inventor: Michael Nghiem Le (Wichita, KS)
A61K8/362A61H35/006A61K8/0204A61K8/19A61K8/25A61K8/34A61K8/553A61K8/732A61K8/817A61K8/9794A61Q19/10A61K2800/222
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Quick Facts
Patent No.
US 12,558,300
App. No.
18/596,620
Granted
Feb 24, 2026
Kind
B1
Abstract

An effervescent foot bath which employs an acid in combination with a carbonated base to produces a effervescing effect in a closed foot tub. The reaction has been designed to function externally to soften and begin the process of removing dry, rough peeling skin from the feet.

Claims (12)

1 . A method for treating the foot or the feet of a pedicure recipient in a foot bath, consisting of the following steps:

A. providing an amount of water in a foot bath and at least partially submerging at least one foot above the ankle of the foot of a pedicure recipient to be in contact with the water,

B. obtaining two dry powder mixtures that are packaged seperately from each other, one of the dry powder mixtures including sodium bicarbonate as a primary ingredient and the other of the dry powder mixtures including citric acid as a primary ingredient, the mixture including citric acid as a primary ingredient consisting of at least 90% citric acid in powder form by weight, and:

(a) between 0.5% and 2.5% menthol crystals, by weight

(b) between 0.2% and 0.7% lecithin, by weight

(c) between 0.2% and 0.6% Polyquaternium 37 by weight, and

(d) between 0.1% and 0.4%, aloe vera in powder form by weight, and, the mixture including sodium bicarbonate as a primary ingredient consisting of at least 90% sodium bicarbonate by weight, and:

(a) between 4% and 8% maltodextrin by weight,

(b) between 0.1% and 1% aloe vera by weight,

(c) between 0.05% and 1% talc powder by weight, and,

(d) between 0.03% and 1% fragrance by weight,

C. adding the two dry powder mixtures as defined in step B to the water of the footbath defined in step A such that Sodium Bicarbonate in one of the mixtures as described in step B and Citric Acid in the other one of the mixtures as described in step B correspond to each other so that the resulting pH of the water of the foot bath after the mixtures have been added is between 3 and 10.

Continuity (3)
Continuation 17567454 · Jan 3, 2022
Continuation 16029356 · Jul 6, 2018
Provisional Application 62529853 · Jul 7, 2017
References Cited (4)
US 5100674A · Ser · 1992 [cited by examiner]
US 20140255318A1 · Stasko · 2014 [cited by examiner]
US 20150150813A1 · Koboshi · 2015 [cited by examiner]
US 20190327961A1 · Remmal · 2019 [cited by examiner]