Inventor

LUHRMANN CARL L

US4 patents

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

KAMYR INC

2 patents

US5575890ANov 19, 1996

Method for selectively increasing the sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of wood

KAMYR INC22 citations91

US5302247AApr 12, 1994

Top circulation line cooling for a modified cook digester

KAMYR INC16 citations72

AHLSTROM MACHINERY INC

1 patent

US5824188AOct 20, 1998

Method of controlling the pressure of a continuous digester using an extraction-dilution

AHLSTROM MACHINERY INC21 citations91

ANDRITZ AHLSTROM INC

1 patent

US6132556AOct 17, 2000

Method of controlling pulp digester pressure via liquor extraction

ANDRITZ AHLSTROM INC24 citations90