Inventor
FRIEND WILLIAM H
US15 patents
⚠️ This page may combine multiple inventors who share the name “FRIEND WILLIAM H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNION CAMP PATENT HOLDING
12 patentsUS5863389AJan 26, 1999
Pulp bleaching reactor for dispersing high consistency pulp into a gaseous bleaching agent containing ozone
UNION CAMP PATENT HOLDING51 citations93
US5451296ASep 19, 1995
Two stage pulp bleaching reactor
UNION CAMP PATENT HOLDING20 citations92
US5181989AJan 26, 1993
Reactor for bleaching high consistency pulp with ozone
UNION CAMP PATENT HOLDING24 citations92
US5174861ADec 29, 1992
Method of bleaching high consistency pulp with ozone
UNION CAMP PATENT HOLDING22 citations92
US5409570AApr 25, 1995
Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
UNION CAMP PATENT HOLDING20 citations82
US5296097AMar 22, 1994
Method for reducing contaminants in pulp prior to ozone bleaching
UNION CAMP PATENT HOLDING10 citations73
US5520783AMay 28, 1996
Apparatus for bleaching high consistency pulp with ozone
UNION CAMP PATENT HOLDING17 citations72
US5525195AJun 11, 1996
Process for high consistency delignification using a low consistency alkali pretreatment
UNION CAMP PATENT HOLDING10 citations70
US5472572ADec 5, 1995
Reactor for bleaching high consistency pulp with ozone
UNION CAMP PATENT HOLDING6 citations62
US6315861B1Nov 13, 2001
Process for conditioning ozone gas recycle stream in ozone pulp bleaching
UNION CAMP PATENT HOLDING4 citations61
US6126781AOct 3, 2000
Process for conditioning ozone gas recycle stream in ozone pulp bleaching
UNION CAMP PATENT HOLDING4 citations61
US5989388ANov 23, 1999
Method for ozone bleaching of high consistency pulp in two stages
UNION CAMP PATENT HOLDING1 citations51