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US 5,207,827 AGranted
Ear plug composition
OwnerJoseph F. Tokarzinventor
Life of this patent
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Abstract
The invention is a composition especially for ear plugs comprised of a starch based ester of a dicarboxylic acid, lecithin, wax, trace amounts of vitamins A, C, and E and a biocidal amount of grapefruit seed extract. The ear plug composition is especially useful as it retains its elasticity after prolonged use and after being subjected to temperature extremes. The composition is safe, and also kills germs due to biocidal action of grapefruit seed extract among other ingredients.
Claims7
A resilient composition, especially useful for earplugs, comprising:
- about 1 part by volume wax, 4 parts by volume starch based acid ester of a dicarboxylic acid, 1 part by volume soya lecithin and a biocidally effective amount of grapefruit seed extract.
Dependencies are inferred from the claim text.