Walter Eirich — 11 Patents at Unknown

Walter Eirich has been granted 11 US patents while listed as an inventor at Unknown. The first was granted in 1980 and the most recent in August 2005. Walter Eirich ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Walter Eirich in Walldürn, DE.

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #	Title	Co-Inventors	Date
6926063	Method for conditioning foundry moulding sand and a device therefor	Paul Eirich, Hubert Eirich	2005-08-09
4997357	Apparatus for treatment of power station residues	Hubert Eirich, Paul Eirich, Herbert Durr	1991-03-05
4854715	Pressure-resistant mixer	Paul Eirich, Hubert Eirich	1989-08-08
4758372	Method of producing lead paste for batteries	Hubert Eirich, Paul Eirich	1988-07-19
4744829	Process for producing agglomerates which are resistant to leaching out	Hubert Eirich, Paul Eirich	1988-05-17
4681267	Method of regenerating old casting sand	Dieter S. Leidel, Hubert Eirich, Paul Eirich	1987-07-21
4624003	Apparatus for heating electrically conductive bulk materials	Paul Eirich, Hubert Eirich, Erwin Goldschmidt	1986-11-18
4569025	Method of preparing foundrys and by measuring moisture and compressibility	Paul Eirich, Hubert Eirich	1986-02-04
4562970	Apparatus for opening and closing the outlet aperture of a processing machine	Paul Eirich, Hubert Eirich	1986-01-07
4560283	Apparatus for closing and continuously emptying the container of a treatment machine	Paul Eirich, Hubert Eirich, Erwin Goldschmidt	1985-12-24
4186592	Method of measuring the moisture content in flowable materials and apparatus for carrying out the method	Hubert Eirich, Paul Eirich, Josef Hasenhundl, Adolf Spengler	1980-02-05

Walter Eirich — 11 Patents

Issued Patents All Time

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