Siemens Aktiengesellschaft

Siemens Aktiengesell Schaft

Boehringer Ingelheim Vetmedica Gmbh

Siegfried Birkle

Johann Gehring

Recai Sezi

Rainer Leuschner

Hellmut Ahne

Michael Sebald

Johann Kammermaier

Eva Rissel

Klaus Stoeger

Klaus Stoger

Albert Hammerschmidt

Hans-Dieter Feucht

Eberhard Kuehn

Hans De Vries

Waldemar Nippe

Horst Borndoerfer

Roland Rubner

Rainer Kamps

Gerhard Rittmayer

Horst Borndorfer

Gerhard Schmidt

Werner Elsel

Rolf Schulte

Arnolf Maurer

Albrecht Winnacker

Juergen Beck

Eva-Maria Rissel

Rolf-W Schulte

Walter Gumbrecht

Thomas Bosselmann

Peter Paulicka

Manfred Stanzel

Michael Willsch

Eberhard Kuhn

Richard Dotzer

Stefan Hain

Tobias Noll

Manfred Waidhas

Heike Barlag

Jurgen Fischer

Ann Dumoulin

Regina Hornung

Hartwig Bierhenke

Hans Hauschildt

Daniela Kühn

Hans-Juergen Bestmann

Johann Kammermaier, Deceased

Ju/ Rgen Fischer

Hans-Jurgen Bestmann

Karin Preissner

Especially in order to carry out the so-called enzyme-coupled DNA hybridization test in a closed cartridge including a microfluid system, using stored dry reagents, the reagents must be dissolved in the microfluid system and transported into the measuring chamber directly before the measurement. During the dissolution of the reagents in water, air cushions that cannot reach the measuring chamber must absolutely be prevented from forming upstream of the reagent liquid. According to an embodiment of the invention, the liquid measuring sample and the liquid reagents are transported in such a way that the air cushion is directed into the waste line and the measuring sample and the reagents are then introduced into the measuring chamber without any air bubbles. In this way, measuring errors can be avoided.

Method for carrying out an electrochemical measurement on a liquid measuring sample in a measuring chamber that can be accessed by lines, and corresponding arrangement

The flow rate of a fluid flowing around a measuring element is measured using a guide for guiding an electromagnetic wave along the longitudinal extension thereof and at least one electric heating element that is placed adjacent to the guide. The guide can be heated by the heating element. An electromagnetic wave, which can be launched into the guide, can be influenced according to the temperature of the guide that is dependent on the flow rate of the fluid.

Measurement element for determining a flow rate

The system is intended to provide an isolated power supply for an electrical load. It contains a generator for producing a supply signal, and a transmission path having two separate branch elements. The first branch element is designed for transmission of the supply signal (S) in the forward direction, and the second branch element is designed for transmission of the supply signal in the backward direction, so that this results in a closed circuit for the supply signal. The two branch elements contain means for isolation. The load can be supplied by the supply signal with an electrical power of at most 100 mW.

System for supplying electrical power to a load by a transmission path which has been split into two parts

A fuel cell is provided which includes iron-based alloys for the construction of the solid parts of the fuel cell. The fuel cell includes a membrane electrode unit and solid constructive parts which may include current collectors, a cell frame and a bipolar plate. At least one of these solid constructive parts is made from an iron-based material that preferably has an effective weight percent of iron of greater than or equal to 26.9 percent.

Fuel cell and use of iron-based alloys for the construction of fuel cells

A photoresist suitable for the production of structures in the submicron range contains the following components:

Photoresists which are suitable for producing sub-micron size structures

Dry-developable positive resist

Premixed polymers which can serve as base polymers for high-resolution resists are structured from 40 to 99 mole % of a tert. butyl ester of an unsaturated carboxylic acid and 1 to 60 mole % of an anhydride of an unsaturated carboxylic acid.

Mixed polymers

Radiation-sensitive resist composition comprising a diazoketone

New mixed polymers which can serve as base polymers for high-resolution resists are structured from 40 to 99 mole % of a tert. butyl ester of an unsaturated carboxylic acid and 1 to 60 mole % of an anhydride of an unsaturated carboxylic acid.

Copolymers

Multilayer printed circuit boards and multichip-module substrates having at least one layered composite of high-temperature-stable plastic and conductive tracks wherein the plastic is provided with a thin layer of amorphous, hydrogenated carbon (a--C:H) having a water permeation coefficient of &lt;1.1.times.10.sup.-13 m.sup.2 /s. The a--C:H-layer also has a hardness gradient across it.

Multilayer printed circuit boards and multichip-module substrates, with

A method for manufacturing multichip modules having layer sequences made of dielectric material with conducting tracks embedded therein is characterized by the following features: (1) a temperature-resistant, base-resistant polymer having a dielectric constant .ltoreq.3 is used as a dielectric material, which is applied to a non-conductive substrate and serves as an edge boundary for currentless, autocatalytic build-up of the conducting tracks; (2) the dielectric material is provided with a layer made of material which is soluble in organic solvents (lift-off layer); (3) the dielectric material and the lift-off layer are structured in a single lithographic step, either a direct or an indirect structuring taking place and grooves having an aspect ratio .gtoreq.1 being formed in the dielectric material; (4) a metallic seed layer is applied to the dielectric material or rather to the lift-off layer through vapor deposition in a directed manner; (5) the lift-off layer is removed using an organic solvent; and (6) conducting tracks are created in the grooves through currentless metal deposition.

Connection and build-up technique for multichip modules

A working electrode or an electrochemical-enzymatic sensor system has a metallic base body which is provided with a thin layer of amorphous hydrogenated carbon (a-C:H).

Working electrode for electrochemical enzymatic sensor systems

Known large vibrating conveyors are not readily suitable as such for conveying bulk materials or small articles into or out of a liquid bath, because the liquid transmits the vibrations to other structural parts, for example a vessel for the liquid, as a result of the incompressibility of the liquid. In order to remedy this, the vibrating conveyor device according to the invention has a compressible space or chamber underneath the vibrating part which damps the vibrations, when suitably coordinated with the liquid bath. The space is preferably gas-filled and its damping properties can be varied by feeding additional gas through a line which can be shut off by a member, or by bleeding some of the filling through a further line which can likewise be shut off by a member.

Vibrating conveyor device dipping into a liquid with damping of

A method for the photolithographic production of structures in the submicron range including the following steps:

Production of photolithographic structures

Cost-effective, highly heat-resistant positive resists based on oligomer and/or polymer polybenzoxazole precursors and diazo quinones possess a high [level of] stability in storage when the polybenzoxazole precursors are hydroxypolyamides of the following structure: ##STR1## whereby R, R*, R.sub.1, R*.sub.1, and R.sub.2 are aromatic groups, R.sub.3 is an aliphatic, cycloaliphatic or aromatic group having at least one alkenyl or alkynyl grouping and, with respect to n.sub.1, n.sub.2 and n.sub.3, the following applies:

Highly heat-resistant positive resists comprising end-capped

Growing community of inventors

Hoechstadt A/Aisch, Germany

Siegfried Birkle