Inventor · disambiguated record
Josef Sprehe
Also filed as: SPREHE JOSEF
6 granted patents·141 citations·filing 1981–2012
83Inventor score
Top patents by PatentIndex Score
6 records- 0187US4812296AProcess utilizing catalytic material for the reduction of nitrous oxidesSIEMENS AG·Filed 1988·Granted Mar 14, 1989·70 cites·8 claims
- 0277US5045516AProcess for producing a catalyst for reducing nitrogen oxides in flue gasesSIEMENS AG·Filed 1989·Granted Sep 3, 1991·36 cites·9 claims
- 0363US5225390ACatalyst for reducing nitrogen oxidesSIEMENS AG·Filed 1991·Granted Jul 6, 1993·24 cites·10 claims
- 0443US8539673B2Method and device for machining a sealing seat of a shut-off valveGUEGEL SIEGFRIED·Filed 2012·Granted Sep 24, 2013·1 cites·18 claims
- 0537US5749651ACombined feed and mixing deviceSIEMENS AG·Filed 1996·Granted May 12, 1998·10 cites·9 claims
- 0627US4512957AMethod for the separation of uranium isotope compounds already converted isotope-selectivelyKRAFTWERK UNION AG·Filed 1981·Granted Apr 23, 1985·0 cites·1 claims
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