公开(公告)号：US3445264A

公开(公告)日：1969-05-20

申请号：US3445264D

申请日：1965-06-24

Applicant: IBM

Inventor： HAINES ROBERT S

IPC: C08J7/12 ,  C23C18/20 ,  C23C18/26 ,  G11B5/702 ,  G11B5/73 ,  H01F10/28 ,  H01F41/24 ,  B44D1/20

CPC classification number: H01F41/24 ,  C08J7/12 ,  C23C18/208 ,  C23C18/26 ,  C23C18/28 ,  C23C18/30 ,  G11B5/7028 ,  G11B5/73 ,  G11B5/7305 ,  H01F10/28

公开(公告)号：US3049442A

公开(公告)日：1962-08-14

申请号：US83795459

申请日：1959-09-03

Applicant: IBM

Inventor： HAINES ROBERT S ,  BERNARD LELAND

IPC: G11B5/702

CPC classification number: G11B5/7021

公开(公告)号：US3600314A

公开(公告)日：1971-08-17

申请号：US3600314D

申请日：1969-12-22

Applicant: IBM

Inventor： HAINES ROBERT S

IPC: H01F1/11 ,  C01G37/02 ,  G11B5/706

CPC classification number: B82Y30/00 ,  C01G37/02 ,  C01P2004/10 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/80 ,  G11B5/70636

Abstract: THIS INVENTION RELATES TO THE FORMATION OF FERROMAGNETIC CHROMIUM OXIDE COMPOSITIONS CONTAINING 59% TO 62% CHROMIUM AND 0.05% TO 0.90% CARBON COMBINED WITH OXYGEN AND IN THE FORM OF UNIFORM, FINELY DIVIDED PARTICLES OF TETRAGONAL CRYSTALLINE STRUCTURE. THE PROCESS OF FORMING FERROMAGNETIC CHROMIUM OXIDE CONSISTS OF TREATING A CHROMIUM COMPOUND WITH CARBON OR CARBON CONTAINING COMPOUND, AND THEN SUBJECTING THE MIXTURE TO HEAT AND PRESSURE DECOMPOSITION.

公开(公告)号：US3479219A

公开(公告)日：1969-11-18

申请号：US3479219D

申请日：1966-01-17

Applicant: IBM

Inventor： HAINES ROBERT S ,  VRANKA JOSEPH S

IPC: C23C16/06 ,  C23C16/16 ,  C23C16/44 ,  H01F10/14 ,  H01F41/22 ,  G03G19/00 ,  G11B5/62

CPC classification number: C23C16/06 ,  C23C16/16 ,  C23C16/44 ,  H01F10/14 ,  H01F41/22

公开(公告)号：US3171520A

公开(公告)日：1965-03-02

申请号：US26877463

申请日：1963-03-28

Applicant: IBM

Inventor： HAINES ROBERT S

IPC: F16C13/00 ,  F16D69/00 ,  F16D69/02 ,  F16H13/02 ,  F16H15/46 ,  F16H55/32 ,  F16H55/34 ,  G11B15/28 ,  G11B15/29

CPC classification number: G11B15/28 ,  F16C13/00 ,  F16D69/02 ,  F16D69/025 ,  F16D69/027 ,  F16D2069/003 ,  F16H13/02 ,  F16H15/46 ,  F16H55/32 ,  F16H55/34 ,  G11B15/29

Abstract: In a friction roller drive (see Division F2) one of the contacting rollers is an aluminium base cylinder, to which is first applied a zincate coating, followed by successive electrodeposits of a Rochelle copper strike layer, a nickel plating deposited from a Watts bath containing tannic acid, (the nickel surface then being ground), a flash nickel plating from an all-chloride bath and finally the chromium from a chromic acid-sulphate bath, rhodium surface layer from a sulphate bath or gold from a cyanide bath. In the case of gold a strike layer is first applied followed by a hard exterior plating.

公开(公告)号：US3607675A

公开(公告)日：1971-09-21

申请号：US3607675D

申请日：1969-01-14

Applicant: IBM

Inventor： HAINES ROBERT S

IPC: C09D5/23 ,  C25C5/00 ,  C25C5/02 ,  C25D1/00 ,  H01F1/06 ,  C22D5/00 ,  C23F17/00

CPC classification number: C25D1/00 ,  C25C5/02 ,  H01F1/06 ,  H01F1/061 ,  Y10T428/294

Abstract: The invention relates to the preparation of fine ferromagnetic particles by electrodeposition of iron, nickel, cobalt, or mixtures of these metals, in a dialkyl sulfoxide bath, such as dimethyl sulfoxide, the particles produced at the electrode being removed at desired intervals. Heat-stable organic binders may be dissolved in the plating bath during electrodeposition to coat the formed particles and thereby inhibit surface oxidation and agglomeration. The particles are oblong in shape and, coated or uncoated, are especially useful for magnetic recording media, magnetic cores, magnetically responsive fluid suspensions and permanent magnets.

公开(公告)号：US3574685A

公开(公告)日：1971-04-13

申请号：US3574685D

申请日：1969-01-14

Applicant: IBM

Inventor： HAINES ROBERT S

IPC: B22F9/30 ,  E21D11/10 ,  G11B5/706 ,  H01F1/06 ,  H01F10/02

CPC classification number: G11B5/706 ,  E21D11/105 ,  H01F1/06 ,  H01F1/065

Abstract: THIS INVENTION RELATES TO THE PREPARATION OF HIGH COERCIVITY, FINELY DIVIDED ACICULAR MAGNETIC METAL, ALLOY, OR OXIDE PARTICLES BY PRECIPITATION OF OXALATES OF IRON, NICKEL, COBALT, OR MIXTURES OF THESE METAL OXALATES FROM A BATH CONTAINING DIALKYL SULFOXIDE, PREFERABLY DIMETHYL SULFOXIDE. OXALIC ACID OR A SOLUBLE SALT OF OXALIC CID WHICH PROVIDES OXALATE IONS IN SOLUTION IS REACTED WITH A SOLUBLE METAL SALT OF IRON, NICKEL, OR COBALT DISSOLVED IN THE BATH. PRECIPITATION IS CAUSED BY THE ADDITION OF WATER TO THE DIALKYL SULFOXIDE BATH. AFTER SEPARATING AND DRYING, THE PRECIPITATE IS DECOMPOSED, EITHER BY HEAT ALONE OR BY REDUCTION WITH A REDUCING GAS AT ELEVATED TEMPERATURES TO PRODUCE METAL PARTICLES WHICH ARE OBLONG IN SHAPE AND WHICH VARY IN SIZE FROM ABOUT 0.1 MICRON TO 1.0 MICRON.

公开(公告)号：US3574115A

公开(公告)日：1971-04-06

申请号：US3574115D

申请日：1969-06-30

Applicant: IBM

Inventor： HAINES ROBERT S

IPC: C01G37/027 ,  G11B5/706 ,  H01F1/11 ,  C04B35/12

CPC classification number: G11B5/70636

Abstract: CERIUM MODIFIED FERRO-MAGNETIC CHROMIUM OXIDE COMPOSITIONS CONTAINING 56% TO 61.8% CHROMIUM AND 0.1% TO 6% CERIUM, BOTH COMBINED WITH OXYGEN, IN THE FORM OF FINELY DIVIDED PARTICLES. THESE PARTICLES ARE OF TETRAGONAL CRYSTALLINE STRUCTURE AND HAVE A LENGTH-TO-WIDTH RATIO OF AS MUCH AS 22 TO 1 AND AN ACTUAL LENGTH IN THE RANGE OF ABOUT 0.5 TO 13 MICRONS. THE PROCESS OF FORMING CERIUM MODIFIED CHROMIUM OXIDE FERRO-MAGNETIC COMPOSITIONS CONSISTS OF MIXING A CHROMIUM COMPOUND WITH A SOURCE OF CERIUM, AND THEN SUBJECTING THE MIXTURE TO HEAT AND PRESSURE.

公开(公告)号：US3293066A

公开(公告)日：1966-12-20

申请号：US24583762

申请日：1962-12-19

Applicant: IBM

Inventor： HAINES ROBERT S

IPC: G11B5/72 ,  G11B5/735 ,  H01B1/24 ,  H05F1/02

CPC classification number: H01B1/24 ,  G11B5/72 ,  G11B5/735 ,  H05F1/02 ,  Y10S428/90 ,  Y10S428/922

公开(公告)号：US3600315A

公开(公告)日：1971-08-17

申请号：US3600315D

申请日：1969-12-22

Applicant: IBM

Inventor： HAINES ROBERT S

IPC: C01G37/027 ,  C01G37/02 ,  G11B5/706 ,  H01F1/11

CPC classification number: G11B5/70636 ,  C01G37/02 ,  C01P2004/10 ,  C01P2004/62 ,  C01P2006/60 ,  C01P2006/80

Abstract: THIS INVENTION RELATES TO THE FORMATION OF FERROMAGNETIC CHROMIUM OXIDE COMPOSITIONS CONTAINING 59% TO 62% CHROMIUM AND 0.05% TO 0.90% CARBON COMBINED WITH OXYGEN, AND IN THE FORM OF FINELY DIVIDED PARTICLES OF TETRAGONAL CRYSTALLINE STRUCTURE. THE PROCESS OF FORMING CARBON MODIFIED FERROMAGNETIC CHROMIUM OXIDE CONSISTS OF MIXING A SOLUBLE CHROMIUM HALIDE COMPOUND WITH AN ORGANIC COMPLEXING AGENT, ASSOCIATING THE COMPLEX WITH ADDITIOANL CHROMIUM COMPOUND, AND THEN SUBJECTING THE MIXTURE TO HEAT AND PRESSURE DECOMPOSITION.