Method for producing a multi-layer blank with a through-hole

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12251277
APP PUB NO 20230249379A1
SERIAL NO

17592677

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Abstract

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A method for forming a multi-layer blank of a ceramic material including the steps of: providing a mold that includes at least one side wall surrounding a lower press plunger to form a cavity therebetween, wherein the lower press plunger has a movable pin; filling into the mold a first ceramic material; extending the movable pin from an upper surface of the lower press plunger and into the cavity; pressing a first upper press plunger against the first ceramic material so that a first open cavity is formed while at least a portion of the first upper press plunger is in contact with the movable pin to maintain the through-hole through the first layer; filling into the mold a second ceramic material of a different composition; extending the movable pin from an upper surface of the first layer and into the first open cavity; and pressing a second upper press plunger against the second layer so that a second open cavity is formed in communication with the through-hole that extends through the first and second layers to form the blank.

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Patent Owner(s)

Patent OwnerAddress
DENTSPLY SIRONA INC221 W PHILADELPHIA STREET SUITE 60W YORK PA 17401

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fecher, Stefan Johannesberg, DE 39 246
Gebhardt, Andreas Langenselbold, DE 11 33
Giese, Sven Hanau, DE 1 0
Rösch, Tobias Reichenberg, DE 1 0
Völkl, Lothar Goldbach, DE 15 16

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