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1.发明授权Method in manufacturing chemical or semi-chemical pulp from heavily resinous wood 失效从重树脂木制造化学或半化学纸浆的方法
公开(公告)号：US2885317A
公开(公告)日：1959-05-05
申请号：US49575255
申请日：1955-03-21
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： HARALD COLLIN PER , ESBJORN EFTRING KARL , HARALD JONSSON JOHN
IPC: D21C3/26
CPC classification number: D21C3/26
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2.发明授权Methods in the evaporation of liquors obtained in the digesting of cellulosic materials with alkali sulphite and/or alkali bisulphite 失效在碱性亚硫酸盐和/或碱式亚硫酸氢盐消化纤维素材料时获得的液体蒸发的方法
公开(公告)号：US2755168A
公开(公告)日：1956-07-17
申请号：US23191551
申请日：1951-06-15
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： HARALD COLLIN PER
IPC: D21C11/10
CPC classification number: D21C11/106 , Y10S423/03
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