US 12,329,612 B2
Foam earplug with transdermal material
Mark Magidson, Los Angeles, CA (US); James Hornstein, Studio City, CA (US); and Fred Ryan, Venice, CA (US)
Assigned to Moldex-Metric, Inc., Culver City, CA (US)
Filed by Moldex-Metric, Inc., Culver City, CA (US)
Filed on Sep. 26, 2024, as Appl. No. 18/898,266.
Application 18/898,266 is a division of application No. 18/782,808, filed on Jul. 24, 2024.
Application 18/782,808 is a division of application No. 17/480,116, filed on Sep. 20, 2021.
Application 17/480,116 is a continuation of application No. 16/164,013, filed on Oct. 18, 2018, abandoned.
Prior Publication US 2025/0017783 A1, Jan. 16, 2025
Int. Cl. A61F 11/08 (2006.01); A61F 11/12 (2006.01); A61L 31/16 (2006.01); A61M 31/00 (2006.01); A61M 35/00 (2006.01)
CPC A61F 11/08 (2013.01) [A61M 31/002 (2013.01); A61F 11/085 (2022.01); A61F 11/12 (2013.01); A61L 31/16 (2013.01); A61M 35/00 (2013.01); A61M 2210/0662 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of making a foam earplug having an outer layer infused with a transdermal material having a beneficial effect, the method comprising:
providing a mold having at least one cavity to form an earplug having a size and shape to fit at least partially within an ear canal,
providing a transdermal material having a particular beneficial effect,
coating an interior of the at least one cavity with the transdermal material,
providing a foamable plastic material, and
placing the foamable plastic material within the at least one coated cavity to foam to the size and shape of the at least one coated cavity and form a resilient foam plastic earplug having an outer layer infused with the transdermal material, wherein the transdermal material of the outer layer of foam is infused with a sleep aid material to form an earplug having the outer layer infused with the sleep aid material.