Frithjof Schimpff

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Wiesbaden, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of making concrete switch cross ties
- Patent number 5,301,927
- Issue date Apr 12, 1994
- Wayss & Freytag Aktiengesellschaft
- Frithjof Schimpff
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method of making concrete switch cross ties
- Patent number 5,227,112
- Issue date Jul 13, 1993
- Wayss & Freytag Aktiengesellschaft
- Frithjof Schimpff
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Making a prestressed concrete beam
- Patent number 5,196,209
- Issue date Mar 23, 1993
- Wayss & Freytag AG
- Frithjof Schimpff
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method of fastening construction components in a casing for series-...
- Patent number 5,127,160
- Issue date Jul 7, 1992
- Wayss & Freytag Aktiengesellschaft
- Frithjof Schimpff
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Process for the production of concrete switch cross ties
- Patent number 5,124,093
- Issue date Jun 23, 1992
- Wayss & Freytag Aktiengesellschaft
- Frithjof Schimpff
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Concrete mold with arrangement for mounting tubular components
- Patent number 4,948,089
- Issue date Aug 14, 1990
- Wayss & Freytag Aktiengesellschaft
- Rolf Knodel
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
PRESTRESSED CONCRETE SLEEPER AND METHOD FOR TRANSPORTING AND INSTAL...
- Publication number 20120181343
- Publication date Jul 19, 2012
- RAIL.ONE GMBH
- Frithjof Schimpff
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES