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公开(公告)号：US3711278A
公开(公告)日：1973-01-16
申请号：US3711278D
申请日：1970-02-17
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： JOSEFSSON E
Abstract: A CHROMIUM ALLOYED STEEL IS MANUFACTURED IN THIS WAY. MOLTEN IRON, CONTAINING CARBON AND ALLOYING SUBSTNCES, IS MIXED WITH CHROMIUM OXIDE AND A SLAG FORMING AGENT, THE ALLOYING SUBSTANCES ARE OXIDIZED TO FORM SLAG. THE CHROMIUM OXIDE IS REDUCED TO METALLIC CHRONIUM. THE SLAG IS REMOVED. THE MOLTEN METAL IS NOW REFINED BY MEANS OF OXYGEN, RESULTING IN THE CARBON CONTENT DROPPING FROM 2 TO 0.2% AND THE TEMPERATURE INCREASING TO 1700*C.
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公开(公告)号：US3655060A
公开(公告)日：1972-04-11
申请号：US3655060D
申请日：1970-03-03
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： HAGDAHL ERIK LENNART
Abstract: A gas or liquid filter structure comprising a fibrous filter web arranged in alternating folds and in which there is positioned between adjacent folds a grid-like distance member which presents a portion adapted to conform to the contours of each fold edge and support it from within.
Abstract translation: 一种气体或液体过滤器结构，包括以交替的折叠布置的纤维过滤网，并且其中位于相邻折叠之间的网格状距离构件，其呈现适于与每个折叠边缘的轮廓相符并将其从内部支撑的部分。
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公开(公告)号：US3385694A
公开(公告)日：1968-05-28
申请号：US41838564
申请日：1964-12-09
Applicant: STORA KOPPARBERGS BERGSLAGS AB
IPC: B22F9/00
CPC classification number: B22F9/00
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54.发明授权
公开(公告)号：US3376130A
公开(公告)日：1968-04-02
申请号：US43666165
申请日：1965-03-02
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： THEODOR KOOTZ , HEINZ MAAS , AXEL BENGTSSON ERIK
CPC classification number: C21C1/02 , C21C5/32 , Y02P10/212
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公开(公告)号：US3325877A
公开(公告)日：1967-06-20
申请号：US50994865
申请日：1965-11-26
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： LENNART JONSSON STIG EVERT
IPC: B23B27/16
CPC classification number: B23B27/167 , Y10T407/118 , Y10T407/2282 , Y10T407/23
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Patent Agency Ranking
公开(公告)号：US3304172A
公开(公告)日：1967-02-14
申请号：US34318164
申请日：1964-02-03
Applicant: STORA KOPPARBERGS BERGSLAGS AB
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公开(公告)号：US3259486A
公开(公告)日：1966-07-05
申请号：US28485163
申请日：1963-06-03
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： THEODOR KOOTZ , HEINZ MAAS , AXEL BENGTSSON ERIK
IPC: C21C5/32
CPC classification number: C21C5/32
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公开(公告)号：US3192035A
公开(公告)日：1965-06-29
申请号：US27478063
申请日：1963-04-22
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： HARALD JONSSON NILS
CPC classification number: C21C7/0087 , C21C5/4653
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公开(公告)号：US3169160A
公开(公告)日：1965-02-09
申请号：US14750061
申请日：1961-10-25
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： EVALD JOHANSSON FOLKE KARL
IPC: C21C5/44
CPC classification number: C21C5/44
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公开(公告)号：US3073672A
公开(公告)日：1963-01-15
申请号：US1994760
申请日：1960-04-04
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： CEDERQUIST KARL N
IPC: D21C11/12
CPC classification number: D21C11/125 , Y10S423/03
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