Assignee
UNION CAMP PATENT HOLDING
US·30 granted patents·534 citations·filing 1990–2000
Top patents by PatentIndex Score
30 records- 0192US5296099AEnvironmentally improved process for bleaching lignocellulosic materials with oxygen, ozone and chlorine dioxideUNION CAMP PATENT HOLDING·Filed 1992·Granted Mar 22, 1994·48 cites·23 claims
- 0291US5863389APulp bleaching reactor for dispersing high consistency pulp into a gaseous bleaching agent containing ozoneUNION CAMP PATENT HOLDING·Filed 1994·Granted Jan 26, 1999·51 cites·23 claims
- 0388US5164043AEnvironmentally improved process for bleaching lignocellulosic materials with ozoneUNION CAMP PATENT HOLDING·Filed 1991·Granted Nov 17, 1992·41 cites·21 claims
- 0480US5181989AReactor for bleaching high consistency pulp with ozoneUNION CAMP PATENT HOLDING·Filed 1990·Granted Jan 26, 1993·24 cites·29 claims
- 0579US5672247AControl scheme for rapid pulp delignification and bleachingUNION CAMP PATENT HOLDING·Filed 1995·Granted Sep 30, 1997·31 cites·16 claims
- 0678US5211811AProcess for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignificationUNION CAMP PATENT HOLDING·Filed 1991·Granted May 18, 1993·26 cites·21 claims
- 0776US5451296ATwo stage pulp bleaching reactorUNION CAMP PATENT HOLDING·Filed 1994·Granted Sep 19, 1995·20 cites·27 claims
- 0876US5164044AEnvironmentally improved process for bleaching lignocellulosic materials with ozoneUNION CAMP PATENT HOLDING·Filed 1991·Granted Nov 17, 1992·22 cites·9 claims
- 0973US5174861AMethod of bleaching high consistency pulp with ozoneUNION CAMP PATENT HOLDING·Filed 1991·Granted Dec 29, 1992·22 cites·24 claims
- 1072US5188708AProcess for high consistency oxygen delignification followed by ozone relignificationUNION CAMP PATENT HOLDING·Filed 1991·Granted Feb 23, 1993·22 cites·25 claims
- 1168US5409570AProcess for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zoneUNION CAMP PATENT HOLDING·Filed 1992·Granted Apr 25, 1995·20 cites·22 claims
- 1267US5656130AAmbient temperature pulp bleaching with peroxyacid saltsUNION CAMP PATENT HOLDING·Filed 1995·Granted Aug 12, 1997·18 cites·25 claims
- 1367US5441603AMethod for chelation of pulp prior to ozone delignificationUNION CAMP PATENT HOLDING·Filed 1993·Granted Aug 15, 1995·18 cites·22 claims
- 1466US5403441AMethod for controlling an ozone bleaching processUNION CAMP PATENT HOLDING·Filed 1992·Granted Apr 4, 1995·21 cites·20 claims
- 1564US5217574AProcess for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulpUNION CAMP PATENT HOLDING·Filed 1991·Granted Jun 8, 1993·16 cites·25 claims
- 1664US5085734AMethods of high consistency oxygen delignification using a low consistency alkali pretreatmentUNION CAMP PATENT HOLDING·Filed 1990·Granted Feb 4, 1992·16 cites·14 claims
- 1761US6315861B1Process for conditioning ozone gas recycle stream in ozone pulp bleachingUNION CAMP PATENT HOLDING·Filed 2000·Granted Nov 13, 2001·4 cites·15 claims
- 1858US5087326ARotating pulp bleaching reactor having inner and outer shells and lifting means on the interior surface of the inner shellUNION CAMP PATENT HOLDING·Filed 1991·Granted Feb 11, 1992·14 cites·16 claims
- 1956US5296097AMethod for reducing contaminants in pulp prior to ozone bleachingUNION CAMP PATENT HOLDING·Filed 1992·Granted Mar 22, 1994·10 cites·15 claims
- 2053US5728264AAvoidance of salt scaling by acidic pulp washing processUNION CAMP PATENT HOLDING·Filed 1995·Granted Mar 17, 1998·9 cites·21 claims
- 2151US5847266ARecovery boiler leak detection system and methodUNION CAMP PATENT HOLDING·Filed 1996·Granted Dec 8, 1998·20 cites·20 claims
- 2250US5173153AProcess for enhanced oxygen delignification using high consistency and a split alkali additionUNION CAMP PATENT HOLDING·Filed 1991·Granted Dec 22, 1992·12 cites·15 claims
- 2349US5520783AApparatus for bleaching high consistency pulp with ozoneUNION CAMP PATENT HOLDING·Filed 1993·Granted May 28, 1996·17 cites·20 claims
- 2447US5525195AProcess for high consistency delignification using a low consistency alkali pretreatmentUNION CAMP PATENT HOLDING·Filed 1993·Granted Jun 11, 1996·10 cites·21 claims
- 2542US5693184AReduction of salt scale precipitation by control of process stream pH and salt concentrationUNION CAMP PATENT HOLDING·Filed 1996·Granted Dec 2, 1997·4 cites·12 claims
- 2638US6126781AProcess for conditioning ozone gas recycle stream in ozone pulp bleachingUNION CAMP PATENT HOLDING·Filed 1991·Granted Oct 3, 2000·4 cites·19 claims
- 2735US5736004AControl scheme for rapid pulp delignification and bleachingUNION CAMP PATENT HOLDING·Filed 1997·Granted Apr 7, 1998·3 cites·36 claims
- 2835US5472572AReactor for bleaching high consistency pulp with ozoneUNION CAMP PATENT HOLDING·Filed 1992·Granted Dec 5, 1995·6 cites·35 claims
- 2933US5554259AReduction of salt scale precipitation by control of process stream Ph and salt concentrationUNION CAMP PATENT HOLDING·Filed 1993·Granted Sep 10, 1996·4 cites·43 claims
- 3031US5989388AMethod for ozone bleaching of high consistency pulp in two stagesUNION CAMP PATENT HOLDING·Filed 1994·Granted Nov 23, 1999·1 cites·20 claims
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