Method of making a unitary brush head and unitary toothbrush head

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10980336
APP PUB NO 20190090623A1
SERIAL NO

16131493

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Abstract

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A method of manufacturing a unitary toothbrush head having a base and filaments extending therefrom. The method includes steps of injecting molten plastic material into a mold cavity having a pre-base cavity and a filament cavity extending therefrom; compressing the molten plastic material, once it is essentially filling the pre-base cavity, by impressing a punching tool into the molten plastic material from the rear side of the pre-base cavity being opposite to a side from which the filament cavity extends; and filling the filament cavity with the molten plastic material under the continuous impression of the punching tool.

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Patent Owner(s)

Patent OwnerAddress
THE PROCTER & GAMBLE COMPANYONE PROCTER & GAMBLE PLAZA ATTN CHIEF PATENT COUNSEL CINCINNATI OH 45202

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eimann, Klaus Zellingen, DE 19 71
Görich, Gerald Weiterstadt, DE 8 136
Götz, Nicolas Ober-Ramstadt, DE 6 15
Schnizer, Harald Kronberg, DE 3 55

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