Company Filing History:

6 out of 30,028

Siemens Aktiengesellschaft

patents

Years Active: 1987-1990

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4916734 - Apparatus for separating dc current and ac current components of a (1990-04-10),

2. 4896351 - Apparatus for separating dc current and ac current components of a (1990-01-23),

3. 4893309 - Digital interface between at least two subscriber line interface (1990-01-09),

4. 4881226 - Digital interface of an integrated subscriber line interface circuit (1989-11-14),

5. 4858226 - Method for the operation of an interface circuit between a central (1989-08-15),

6. 4701947 - Circuit arrangement for suppressing interference signals on the (1987-10-20),

Title: Innovations of Harald Stader

Introduction

Harald Stader is a notable inventor based in Munich, Germany. He has made significant contributions to the field of electrical engineering, particularly in the area of signal processing. With a total of six patents to his name, Stader's work has had a considerable impact on the industry.

Latest Patents

One of Stader's latest patents is an apparatus for separating direct current (dc) and alternating current (ac) components of a composite signal. This innovative apparatus features a main current path that carries the composite signal, which then splits into a dc current path and two dc-blocked ac current paths. At the node, a virtual ground potential for the ac current signal portions is generated using an inverting amplifier with negative feedback located in one of the ac current paths. This design ensures that only the dc current portions flow over the dc current path. In a preferred embodiment, the dc blocking is achieved through capacitors in each ac current path, while the inverting amplifier is an operational amplifier. The non-inverting input of this amplifier is at ground potential, and its inverting input is connected to the respective capacitor. The output is connected to the inverting input via an ohmic negative feedback resistor and to an impedance in the other ac current path.

Career Highlights

Stader is currently employed at Siemens Aktiengesellschaft, a leading global technology company. His work at Siemens has allowed him to further develop his innovative ideas and contribute to various projects within the organization.

Collaborations

Throughout his career, Stader has collaborated with several talented individuals, including Robert Lechner and Hans-Werner Rudolf. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Harald Stader's contributions to the field of electrical engineering, particularly through his innovative patents, have established him as a prominent figure in the industry. His work continues to influence advancements in signal processing and related technologies.

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