W. C. Heraeus Gmbh

Hanau am Main, Germany

W. C. Heraeus Gmbh

Hanau am Main, Germany
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Patent
W. C. Heraeus Gmbh | Date: 2011-02-01

One aspect relates to a method for producing an electrical bushing for an implantable device, an electrical bushing, and an implantable device. The method according to one embodiment includes forming a base body from a ceramic slurry and introducing a bushing conductor made of a metal powder, metal slurry, cermet powder and/or cermet slurry into the base body. The metal fraction in the bushing conductor is provided to decrease towards the base body. It includes sintering the green blank that includes the base body and the bushing conductor.


One aspect is a method for the production of a three-dimensional structure of successive layers producing a multitude of successive layers wherein, with the exception of a first layer, each of the successive layers is arranged on a preceding layer. Each of the successive layers includes at least two materials wherein one material is a sacrificial material and one material is a structure material. Each of the successive layers defines a successive cross-section through the three-dimensional structure. Producing each of the layers includes depositing the sacrificial material by means of an electrochemical process and depositing the structure material by means of physical gas phase deposition. After a multitude of successive layers has been produced, the three-dimensional structure is uncovered by removing at least a part of the sacrificial material. The sacrificial material is at least one of a group consisting of nickel, silver, palladium, and gold.


Patent
W. C. Heraeus Gmbh | Date: 2011-02-01

One aspect relates to a method for producing an electrical bushing for an implantable device, a corresponding electrical bushing, and a corresponding implantable device. The method according to one embodiment is characterized in that a green blank is produced and sintered from an electrically insulating base body green blank made of a ceramic slurry or powder and at least one electrically conductive bushing body green blank made of a cermet material. The at least one bushing body green blank is inserted into a bushing opening of the base body green blank to form a composite green blank, a shape of the at least one bushing body green blank and a shape of the at least one bushing opening are complementary to each other at least in sections thereof and prevent slippage of the bushing body green blank through the bushing opening. The composite green blank is sintered while applying a force that keeps the bodies together.


Patent
W. C. Heraeus Gmbh | Date: 2010-02-18

One aspect is a coil including a laminate having metal layers. The coil is configured for the electrical connection of stimulation electrodes. One of the metal layers exhibits good electrical conductivity and another metal layer great mechanical strength.


Processes for the recovery of ruthenium from materials containing ruthenium or ruthenium oxides or from ruthenium-containing noble metal ore concentrates, with the steps of Optionally, ruthenium is separated off by distillation, instead of precipitation, following step B, with the steps of


Patent
W. C. Heraeus Gmbh | Date: 2013-01-31

A method of forming a wire includes providing a first wire segment and a second wire segment. The first and second wire segments are inserted into opposite ends of a coupling segment. The coupling segment is laser welded such that the laser creates an indent in the coupling segment that penetrates into at least one of the first and second wire segments.


Patent
W. C. Heraeus Gmbh | Date: 2011-03-30

The present invention relates to a form of crystalline epidaunorubicin hydrochloride which is stable and readily soluble, and to a process for the production thereof. This process comprises crystallizing epidaunorubicin hydrochloride in a solvent system including (a) solvent A which is selected from the group consisting of C1 and C2 halogenated solvents and mixtures thereof, (b) solvent B which is selected from the group consisting of C1 - C5 straight and branched alcohols and mixtures thereof, and (c)solvent C which is selected from the group consisting of C1 - C5 straight and branched alcohols and mixtures thereof, wherein solvent C is selected to provide lower solubility to epidaunorubicin hydrochloride than solvent B.


In processes for removing ruthenium by distilling RuO_(4 )from ruthenate-containing solutions with these steps of The processes can be carried out in reactor modules with


Patent
W. C. Heraeus Gmbh | Date: 2011-04-21

One aspect relates to a method for producing an alloy, whereby the alloy consists of three metals and the three metals are selected from the group consisting of tantalum, tungsten, and niobium. The method according to one embodiment is characterized by a) grinding the tantalum to form a tantalum powder and grinding the tungsten to form a tungsten powder; b) mixing the tantalum powder and the tungsten powder to form a blended powder, whereby the weight fraction of tungsten powder in the blended powder is larger than in the desired alloy; c) producing a blended body from the blended powder by means of a powder metallurgical route; d) producing a pre-alloy by means of a first melting of the blended body and at least a fraction of at least one further metal by means of a melt metallurgical route; and e) producing the alloy by means of a second melting of the pre-alloy and the remaining fraction of at least one metal by means of a melt metallurgical route.


Patent
W. C. Heraeus Gmbh | Date: 2011-05-25

One aspect relates to a method for connecting a housing of an active implantable medical device to a head part, whereby an uncured joining agent that is arranged, at least in part, between the housing and the head part is transitioned into a cured joining agent to attain a firmly bonded connection. In one embodiment, the uncured joining agent includes monomers of a (meth)acrylic acid alkyl ester, and the cured joining agent includes at least one polymer of the (meth)acrylic acid alkyl ester.

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