| Patents for C22C 38 - Ferrous alloys, e.g. steel alloys (43,120) |
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| 05/03/1990 | WO1990004659A1 MODIFIED 1% CrMoV ROTOR STEEL |
| 05/02/1990 | CN1007827B Uses and heat-treating technology for al-n-b cast high-speed tool steel |
| 05/01/1990 | US4921766 Electrochemical storage cell |
| 05/01/1990 | US4921763 Soft magnetic thin film |
| 05/01/1990 | US4921553 Magnetically anisotropic bond magnet, magnetic powder for the magnet and manufacturing method of the powder |
| 05/01/1990 | US4921551 Permanent magnet manufacture from very low coercivity crystalline rare earth-transition metal-boron alloy |
| 04/25/1990 | EP0365079A1 Method of manufacturing a permanent magnet |
| 04/25/1990 | CN1041620A Hard low-alloy wear material |
| 04/24/1990 | US4919885 Lower carbon, nitrogen, titanium content |
| 04/24/1990 | US4919863 Oxides formed on porous steel foil |
| 04/24/1990 | US4919735 Khare pipe mold steel |
| 04/24/1990 | US4919728 Method of manufacturing nonmagnetic drilling string components |
| 04/24/1990 | US4919719 Consisting of carbon, nickel, cobalt and iron and hard phase dispersed in matrix; valve seats for automobile engines |
| 04/22/1990 | CA2001163A1 Boron-containing steels and process for their annealing |
| 04/19/1990 | DE3934435A1 Niederlegierter gussstahl Niederlegierter cast steel |
| 04/17/1990 | US4917860 Excellent resistance to hot, concentrated sulfuric aicd |
| 04/17/1990 | US4917738 Improved creep rupture strengths |
| 04/12/1990 | DE3933782A1 Maraging-stahl Maraging steel |
| 04/11/1990 | EP0362812A2 Bonded isotropic R-Fe-B-magnet and method for making it |
| 04/11/1990 | EP0362805A2 Permanent magnet and method for producing the same |
| 04/11/1990 | CN1007521B Permanent magnet made from the rare-earth with very low coercive force transition metal, boron alloy |
| 04/10/1990 | US4915901 Reinforcing steel having resistance to salt and capable of preventing deterioration of concrete |
| 04/10/1990 | US4915900 Free-cutting steel having high fatigue strength |
| 04/10/1990 | US4915752 Corrosion resistant alloy |
| 04/10/1990 | US4915751 Preheating foils to initiate precursor oxide film, increasing to high temperatures |
| 04/10/1990 | US4915737 Rare earth and cobalt, iron or nickel; three or more intermetallic phases |
| 04/10/1990 | US4915735 Self-lubricating |
| 04/05/1990 | WO1990003652A1 Metallic glass alloys for mechanically resonant target surveillance systems |
| 04/04/1990 | EP0361554A1 Use of ferritic chromium-molybdenum steels as materials resisting concentrated sulfuric acid |
| 04/04/1990 | EP0361308A1 Corrosion-resistant permanent magnet and method for preparing the same |
| 04/04/1990 | EP0360955A2 Process for producing a cold rolled steel sheet having a good ageing resistance by continuous annealing |
| 04/04/1990 | CN1041008A Metallic material for gripper and its heat strengthening treatment |
| 04/03/1990 | US4913751 Higher strength steel, especially reinforcing steel or drawing shop feed stock with improved material properties and improved processability |
| 04/03/1990 | CA1267304A1 Manganese steel |
| 04/03/1990 | CA1267303A1 High toughness steel |
| 03/29/1990 | DE3837456C1 Use of a fully austenitic steel for components which are severely stressed corrosion-chemically and mechanically |
| 03/28/1990 | EP0360143A1 Corrosion resistant alloy |
| 03/28/1990 | EP0360055A1 Soft-magnetic film having high saturation magnetic-flux density and magnetic head utilizing the same |
| 03/27/1990 | US4911886 Alloy of chromium, nickel, molydbenum and iron |
| 03/27/1990 | US4911885 Alloy of iron, carbon, chromium and nickel |
| 03/27/1990 | US4911884 Alloy of nickel, chromium, titanium, aluminum molybdenum, vanadium and iron |
| 03/27/1990 | US4911883 High tensile strength |
| 03/27/1990 | US4911882 Process for producing permanent magnets |
| 03/27/1990 | US4911762 Jewelry; Group 8 or 1b metal with aluminum, gallium, indium, and(or) silica |
| 03/27/1990 | CA1267002A1 Low carbon plus nitrogen, free-machining austenitic stainless steel |
| 03/21/1990 | EP0359085A1 Heat-resistant cast steels |
| 03/21/1990 | CN1040627A Self-lubricating iron-base wear-resistant alloy |
| 03/21/1990 | CN1040626A Maraging steel and method of its production |
| 03/20/1990 | US4910096 Cold-rolled steel strip with electrodeposited nickel coating exhibiting a great diffusion depth |
| 03/20/1990 | US4909866 High strength spring and its process of manufacturing |
| 03/20/1990 | CA1266790A1 Process for production of high-hardness, hardened and tempered special steel and special steel alloy |
| 03/14/1990 | EP0358362A1 Method for the manufacture of alloy railway rails |
| 03/14/1990 | EP0358309A1 Accelerated whisker growth on iron-chromium-aluminium alloy foil |
| 03/14/1990 | EP0357800A1 Process for producing nonoriented silicon steel sheet having excellent magnetic properties |
| 03/14/1990 | EP0357797A1 Process for producing nonoriented electric steel sheet having excellent magnetic properties in lowly magnetic field |
| 03/14/1990 | EP0357796A1 Process for producing nonoriented electric steel sheet |
| 03/14/1990 | CN1040396A High strength and high toughness die steel for hammer forging |
| 03/14/1990 | CN1040395A Siliconized fernico |
| 03/14/1990 | CN1007164B Prodn. of austenitic steel with high contents of si and mn |
| 03/14/1990 | CN1007163B Steel resistant to hydrogen sulphide used in oilfield |
| 03/13/1990 | US4908076 Magnet prepared by alloying constituents, casting, comminuting, sintering; high coercive force |
| 03/13/1990 | US4908073 Method of producing a cold rolled steel sheet having a good ageing resistance and small anisotropy and adapted for deep drawing |
| 03/07/1990 | EP0356615A1 Piston ring material and piston ring |
| 03/05/1990 | WO1990004658A1 Heat-resistant high-al austenitic steel having excellent hot working properties |
| 02/28/1990 | EP0356279A1 Process for the obtention of a transparent magnetic material with a high resistance |
| 02/28/1990 | EP0355431A2 Alloy as material for control and heating elements having a positive temperature coefficient |
| 02/28/1990 | CN1040057A High-tensile steel, in particular concrete steel or drawed preformative material, with improved material properties and good workability |
| 02/27/1990 | US4905074 Interdiffusion resistant Fe-Ni alloys having improved glass sealing property |
| 02/27/1990 | US4904540 Adhesion |
| 02/27/1990 | US4904447 Low thermal expansion casting alloy having excellent machinability |
| 02/21/1990 | CN1006905B Heat resisting steel inserted block material of chromium-molybdenum-vanadium-titanium-rare earths |
| 02/20/1990 | US4902473 Rotary brake disc |
| 02/20/1990 | US4902472 High strength stainless steel |
| 02/14/1990 | EP0354405A2 Far-infrared emitter of high emissivity and corrosion resistance and method for the preparation thereof |
| 02/14/1990 | CN1006831B Ferro-silicon-aluminium magnetic film and its manufacturing method and use |
| 02/14/1990 | CN1006813B High strength toughness mould steel |
| 02/13/1990 | US4900640 Low coefficient of expansion alloys having a thermal barrier |
| 02/06/1990 | US4898627 Ultra-rapid annealing of nonoriented electrical steel |
| 02/06/1990 | US4898626 Pretreatment of cold rolling and decarbonization; improved core loss for stress relieving annealing |
| 02/06/1990 | CA1265361A1 Steels for the manufacture of disks and other agricultural tools which work on the soil |
| 02/01/1990 | DE3918372A1 Rust-free, readily weldable maraging steel |
| 01/31/1990 | EP0352597A1 Process for producing hot-rolled strip or heavy plates |
| 01/31/1990 | CN1039268A Fe-mn-al-c austenite containing nonmagnetic and low-temp. steels |
| 01/31/1990 | CN1006646B High temp. heat-resisting steels of rare-earth and high chromium |
| 01/31/1990 | CN1006645B Non-magnetic and non-permanently elastic alloy used for hairsprings in mechanical watches |
| 01/31/1990 | CN1006644B Martensite resist heat steel |
| 01/30/1990 | US4897132 Turbine casing formed of a heat resistant austenitic cast steel |
| 01/30/1990 | US4896544 Magnetoelastic torque transducer |
| 01/25/1990 | WO1990000630A1 Fe-Mn-Al-C ALLOYS AND THEIR TREATMENT |
| 01/25/1990 | WO1990000629A1 High damping capacity, two-phase fe-mn-al-c alloy |
| 01/23/1990 | US4895605 Steel, heat treatment |
| 01/17/1990 | EP0351051A1 Fe-based soft magnetic alloy |
| 01/17/1990 | EP0350967A2 Resin-bonded magnet and its production |
| 01/16/1990 | US4894742 Containing entrapped argon |
| 01/16/1990 | US4894097 Rare earth type magnet and a method for producing the same |
| 01/11/1990 | WO1990000207A1 Sintered alloy steel with excellent corrosion resistance and process for its production |
| 01/10/1990 | EP0148957B1 Steel plated with molten aluminum excellent in high-temperature oxidation resistance and high-temperature strength and process fo r its production |
| 01/10/1990 | CN1038624A Container corner |
| 01/10/1990 | CN1006377B Improved amorphous metal alloy compositions for reversible hydrogen storage |
| 01/09/1990 | US4892704 Low Si high-temperature strength steel tube with improved ductility and toughness |