Otto Ehrentraut

This inventor holds 7 USPTO granted patents. Top assignees: Miba Gleitlager Aktiengesellschaft, Ing. Rauch Fertigungstechnik Gesellschaft M.b.h.. Active years: 1978-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Otto Ehrentraut. Retrieved from https://idiyas.com/inventor/otto-ehrentraut

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 1.7

ph-index = 6

Forward Citations = 102(Granted Patents)

Location History:

Gmuden, OE (1978)
Gmunden, AT (1983 - 2001)

Company Filing History:

6 out of 21

Miba Gleitlager Aktiengesellschaft

patents

1 out of 4

Ing. Rauch Fertigungstechnik Gesellschaft M.b.h.

patents

Years Active: 1978-2001

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6306338 - Melt withdrawal device for melt furnaces for charging casting machines (2001-10-23),

2. 5062718 - One-half part of a sliding surface bearing (1991-11-05),

3. 4606653 - High-duty sliding surface bearing (1986-08-19),

4. 4561787 - Composite sliding surface bearing (1985-12-31),

5. 4538929 - Hydrodynamic sliding surface bearing (1985-09-03),

6. 4400099 - Sliding surface bearing for heavy loads (1983-08-23),

7. 4072368 - Sliding-surface bearing and process of manufacturing the same (1978-02-07),

Title: Otto Ehrentraut: Innovator in Melt Withdrawal Technology

Introduction

Otto Ehrentraut is a notable inventor based in Gmunden, Austria. He has made significant contributions to the field of melt withdrawal technology, holding a total of 7 patents. His work has been instrumental in advancing the efficiency and effectiveness of melt furnaces used in casting machines.

Latest Patents

One of his latest patents is a melt withdrawal device for melt furnaces designed for charging casting machines. This innovative device features a melt conveying pump that includes a pump tube with a lower melt inlet and an upper melt outlet. The pump shaft extends inside the pump tube and carries a pump rotor. To ensure a consistent melt conveyance that is largely independent of variations in melt level within the furnace, a charging means is incorporated before the melt conveying pump. This charging means consists of a charging tank that accommodates the pump tube and a charging pump capable of filling the tank with melt up to a predetermined overflow level.

Career Highlights

Throughout his career, Otto Ehrentraut has worked with several prominent companies, including Miba Gleitlager Aktiengesellschaft and Ing. Rauch Fertigungstechnik Gesellschaft M.b.h. His experience in these organizations has contributed to his expertise in the field of melt technology.

Collaborations

He has collaborated with notable individuals such as Ulf G. Ederer and Hugo Lenhard-Backhaus, further enhancing his innovative capabilities and expanding his professional network.

Conclusion

Otto Ehrentraut's contributions to melt withdrawal technology have established him as a key figure in the industry. His patents reflect a commitment to innovation and efficiency in manufacturing processes.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]