Inventor

SELDER HARALD

10 patents

⚠️ This page may combine multiple inventors who share the name “SELDER HARALD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ESCHER WYSS GMBH

7 patents

US4011027AMar 8, 1977

Stain removal apparatus

ESCHER WYSS GMBH90 citations94

US4431482AFeb 14, 1984

Dispersion apparatus for the preparation of waste paper

ESCHER WYSS GMBH34 citations90

US4405450ASep 20, 1983

Method for fractionating fiber stock obtained from waste paper and apparatus for the performance of the aforesaid method

ESCHER WYSS GMBH21 citations81

US4909900AMar 20, 1990

Method for high temperature, high consistency quick bleaching of raw paper pulp

ESCHER WYSS GMBH21 citations78

US4999084AMar 12, 1991

Method for heat treating short fiber fractions after separation of the long fiber fractions from a secondary fiber mixture

ESCHER WYSS GMBH8 citations73

US4387856AJun 14, 1983

Method for operating an installation for processing waste paper

ESCHER WYSS GMBH9 citations72

US4921573AMay 1, 1990

Method of regulating the specific dispersion work for waste paper stock preparation for papermaking

ESCHER WYSS GMBH4 citations51

VOITH SULZER STOFFAUBEREITUNG

1 patent

US5958179ASep 28, 1999

Process for increasing pulp whiteness by bleaching printed wastepaper under intense dispersing mechanical treatment

VOITH SULZER STOFFAUBEREITUNG21 citations86

VOITH PAPER PATENT GMBH

1 patent

US6391151B2May 21, 2002

Process for dissolving used paper

VOITH PAPER PATENT GMBH2 citations58

VOITH SULZER PAPIERTECH PATENT

1 patent

US6183595B1Feb 6, 2001

Process for treating a fibrous material suspension using combination of low-intensity and high-intensity flotation

VOITH SULZER PAPIERTECH PATENT1 citations50