National Metallurgical Laboratory, Jamshedpur
 

NML IF PATENTS

Patent Appl.No.
Patent No.
Comp. Date
Title
0205DEL86
169371
19860306
A PROCESS FOR THE PREPARATION OF CATALYSED OXYGEN SCAVENGERS SUITABLE FOR PREVENTION OF METALLIC CORROSION IN SYSTEMS USING DIFFERENT GRADES OF WATERS
0274DEL89
175804
19890327
AN IMPROVED PROCESS FOR CALORISING A COMPONENT SELECTED FROM PLAIN CARBON STEEL, STAINLESS STEELS AND OTHER ALLOY STEELS
0730DEL87
170765
19870821
A PROCESS FOR THE PREPARATION OF AN INHIBITOR FOR MULTI PURPOSE APPLICATIONS SUCH AS CORROSION INHIBITION PICKLING AND CLEANING OF METALS AND ALLOYS
0942DEL88
169129
19860306
A PROCESS FOR THE PREPARATION OF CATALYSED OXYGEN SCAVENGERS SUITABLE FOR REMOVAL OF DISSOLVED OXYGEN IN WATER
0943DEL88
169137
19860306
A PROCES FOR THE PREPARATION OF CATALYSED OXYGEN SCAVENGERS SUITABLE FOR REMOVAL OF DISSOLVED OXYGEN IN WATER
0959DEL89
174910
19891019
A PROCESS FOR THE PREPARATION OF VAPOUR PHASE INHIBITOR SUITABLE FOR PROTECTION OF FERRO METAL FROM ATMOSPHERIC CORROSION
1123DEL85
164271
19851231
PROCESS FOR THE PREPARATION OF A STABILIZER TO INHIBIT AUTOCATALYTIC DECOMPOSITION OF HYDROGEN PEROXIDE ADDED IN PICKLING BATHS OF COPPER AND COPPER BASED ALLOYS
1124DEL92
0
19921130
AN IMPROVED HOT-DIP PROCESS FOR GALVANIZING OF STEELS.
1145DEL86
166830
19861224
A PROCESS FOR THE ENRICHMENT OF SILICA IN COMMERCIAL SODIUM SILICATE SOLUTIONS
1232DEL91
0
19911216
A COMPOSITION USEFUL FOR THE PREPARATION OF STAINLESS STEEL POWDERS FROM STAINLESS STEEL SHEETS SCRAPS, RODS THROUGH CHEMICAL ROUTE
1233DEL91
0
19911216
A PROCESS FOR PREPARATION OF STAINLESS STEEL POWDERS FROM STAINLESS STEEL SHEETS, SCRAPS, RODS THROUGH CHEMICAL ROUTE
1257DEL89
176537
19891228
A PROCESS FOR THE PREPARATION OF AN INHIBITOR SUITABLE FOR PROTECTION OF EQUIPMENTS USED IN THE PRODUCTION OF EDIBLE OIL FROM RICE BRAN
1278DEL90
0
19901218
AN IMPROVED PROCESS FOR THE AUTOCATYLIC ELECTROLESS DEPOSITION OF NICKEL ON METALLIC SURFACES FROM ACIDIC BATHS
1279DEL90
177938
19901218
AN IMPROVED PROCESS FOR THE PICLLING OF BRASS AND OTHER COPPER BASED ALLOYS IN SULPHURIC ACID HYDROGEN PEROXIDE MIXTURE
1281DEL90
178842
19901218
AN IMPROVED PROCESS FOR IRON ELECTROFORMING USING CAST IRON AS AN ANODE
1284DEL90
177464
19901218
AN IMPROVED PROCESS FOR THE PASSIVATION TREATMENT OF GALAVANIZED SURFACE IN LOW CHROMATE BATH
1199DEL91
0
19911206
A PROCESS FOR THE PREPARATION OF SINTERED MAGNETITE ANODE FOR CATHODIC PROTECTION
0906DEL88
176142
19900123
A DEVICE FOR THE PRODUCTION OF HIGH QUALITY STEEL FROM DIRECTLY PRODUCED IRON ROD OR SLAB AND A PROCESS FOR THE PRODUCTION OF HIGH QUALITY STEEL USING THE SAID DEVICE
0907DEL88
176341
19900123
IMPROVEMENTS IN OR RELATING TO ELECTRO SLAG SMELTING OF DIRECTLY REDUCED IRON TO PRODUCE HIGH QUALITY STEEL
0194DEL87
169887
19870305
AN IMPROVED CUPOLA
0531DEL91
180408
19910618
AN IMPROVED PROCESS FOR MANUFACTURING OF SUPERIOR QUALITY WEAR RESISTANT CERAMICS
0615DEL92
0
19920715
AN IMPROVED PROCESS FOR THE PRODUCTION OF CERAMIC CRUCIBLES USEFUL FOR THE DETERMINATION OF CARBON AND SULPHUR IN METALS AND ALLOYS
0704DEL91
0
19910802
AN IMPROVED PROCESS FOR THE PRODUCTION OF ALUMINA BASED WEAR RESISTANT CERAMICS
0840DEL90
177992
19900820
IMPROVEMENTS IN OR RELATING TO THE PROCESS OF PRODUCTION OF TABULATOR ALUMINA
0896DEL92
0
0
AN IMPROVED PROCESS FOR THE CONTINUOUS PRODUCTION OF ROD OR A SLAB OF DIRECT REDUCED IRON.
0910DEL88
176412
19900123
IMPROVEMENT IN OR RELATING TO CONTINUOUS PRODUCTION OF ROD OR SLAB MADE OF DIRECTLY REDUCED IRON USING IRON RICH MATERIAL FINES AND NON COKING COAL FINES
1061DEL88
176064
19881205
A PROCESS FOR THE PRODUCTION OF TABULAR ALUMINA
1098DEL89
176534
19891123
AN IMPROVED PROCESS FOR MAKING FROM INSULATION REFRACTORIES FROM ALUMINA KYANITE, CHINA CLAY, FIRECLAY AND OTHER REFRACTORY MATERIALS
1101DEL86
167937
19880311
AN IMPROVED PROCESS FOR MAKING HIGH QUALITY STEEL DIRECTLY FROM ORE FINES AND NON COKING FINES
1173DEL89
176445
19910306
AN IMPROVED PROCESS FOR MAKING RESIN BONDED ALUMINA-GRAPHITE REFRACTORIES
1200DEL91
0
19911206
AN IMPROVED PROCESS FOR THE PRODUCTION OF FUSED CAST PRODUCTS
1205DEL90
179781
0
A PROCESS FOR THE PRODUCTION OF HIGH STRENGTH HIGH TEMPURATURE HIGH ALUMINA(70-90%)HYDRAULIC WHITE CALCIUM ALUMINATE CEMENT
1235DEL93
0
0
A PROCESS FOR MAKING FLUXED COMPOSITE REDUCED IRON PELLETS FROM THE FINES OF IRON RICH MATERIAL AND CARBONACEOUS MATERIALS
1264DEL93
0
19931111
AN IMPROVED PROCESS FOR THE PRODUCTION OF WEAR RESISTANT CERAMICS USING FLY ASH
1283DEL90
178844
19901218
AN IMPROVED PROCESS FOR MAKING DENSE SINTERED SYNTHETIC ZIRCONIA MULLITE GRAINS/AGGREGATES
0911DEL88
176413
19881024
A PROCESS FOR MAKING DIRECTLY REDUCED AND SINTERED IRON ROAD OR SLABS FROM THE FINES OF IRON RICH MATERIALS AND NON-COKING COAL FINES
0763DEL90
177055
19900727
A DEVICE FOR EVALUATING ELECTRICAL CONTACT MATERIALS
0796DEL86
168105
19860908
A PROCESS FOR THE PRODUCTION OF CREEP RESISTANT STAINLESS STEEL
0895DEL92
0
0
AN IMPROVED DEVICE FOR THE CONTINUOUS PRODUCTION OF DIRECT REDUCED IRON ROD OR SLAB AND AN IMPROVED PROCESS THESE FOR USING THE SAID DEVICE.
1468DEL93
0
19931228
AN IMPROVED DEVICE USEFUL FOR CREEP RUPTURE TESTING OF THIN WALLED TUBE SPECIMAN AT ROOM ELEVATED TEMPERATURES
0897DEL89
175189
19901217
A PROCESS FOR PRODUCING STEEL BY USING 100% DIRECTLY REDUCED IRON (DRI) ORE
1027DEL91
0
0
A PROCESS FOR THE PRODUCTION OF A NOVEL ALLOY CAST IRON WITH IMPROVED WEAR RESISTANT PROPERTIES
0183DEL88
172286
19880310
A PROCESS FOR THE PRODUCTION OF AG/aGcD COMPOSITE BY ROLL CLADDING TECHNIQUE
0280DEL86
164487
19860325
AN IMPROVED PROCESS FOR REFINING OF ALUMINIUM AND ITS ALLOYS
0371DEL93
0
19930413
AN IMPROVED PROCESS FOR DIRECT PRODUCTION OF NEARLY 100% B-SIC WHISKERS FROM RICE HUSK.
0435DEL90
178594
19900508
A PROCESS FOR MAKING NOVEL LOW SILVER BRAZING FILLER ALLOY FOR ELECRONIC AND VACUUM TUBE INDUSTRIES
0460DEL86
169140
19870811
A PROCESS FOR THE PRODUCTION OF COMPACTED GRAPHITE IRON
0485DEL88
174343
19890818
AN IMPROVED PROCESS FOR MAKING SHORT CERAMIC FIBRES/WHISKERS
0486DEL88
175602
19890818
A NEW PROCESS FOR MAKING OF CO-DEPOSITED SHORT CERAMIC COMPOSITE FIBRES
0530DEL91
0
19910618
AN IMPROVED PROCESS FOR THE PREPARATION OF SILVER BASE SILVER CADMIUM-OXIDE ALLOY FOR USE AS ELECTRICAL CONTACTS
0546DEL92
178330
19920623
A PROCESS FOR THE PRODUCTION OF NI+CR+FE (60%NI + 16%CR + 24%FE) ALLOY HAVING HIGH ELECTRICAL RESISTIVITY
0652DEL89
175028
19890725
AN IMPROVED FURNACE FOR MELTING OF METALS
0752DEL91
0
19910814
A PROCESS FORT CONTINUOUS PRODUCTION OF SUPERPLASTIC ULTRA-HIGH CARBON(UHC) STEEL SHEET
0801DEL92
0
0
AN IMPROVED PROCESS FOR THE PRODUCTION OF SUPERPLASTIC CAST IRON THROUGH POWDER ROUTE BY RAPID SOLDIFICATION PROCESS.
0802DEL92
0
19920908
AN IMPROVED PROCESS FOR THE PRODUCTION OF HYPER EUTECTIC ALUMINIUM- SILICON ALLOYS.
0839DEL90
177991
19900820
AN IMPROVED PROCESS FOR THE PREPARATION OF CADMIUM FOR SILVER BASE ALLOY FOR USE AS ELECTRICAL CONTACTS
0909DEL88
176097
19900123
A PROCESS FOR THE PRODUCTION OF IRON BASED COMPOSITE MATERIALS
0912DEL88
176163
19881024
A PROCESS FOR THE PRODUCTION OF HIGH SPEED CAST STEEL FOR USE AS HIGH SPEED CUTTING TOOL
0928DEL92
0
19921014
AN IMPROVED PROCESS FOR THE PRODUCTION OF B-SIC WHISKERS FROM RICE HUSK.
0938DEL90
177964
19900921
A PROCESS FOR MAKING NOVEL AG/AG-ZN-SN-(U COMPOSITE BY ROLLCLADDING TECHNIQUE FOR ELECTRICAL CONTACTS
1000DEL92
0
19921104
AN IMPROVED DEVICE USEFUL FOR CONTINUOUS CASTING OF STEEL.
1023DEL86
166170
19861124
AN IMPROVED SLURRY ELECTROLYTIC PROCESS FOR THE PRODUCTION OF HIGH PURITY IRON POWDER FROM SPONGE IRON FINES
1038DEL88
178321
19881129
A PROCESS FOR THE PRODUCTION OF ALLOYS HAVING ELECTRICAL ACTIVITY
1108DEL89
176473
19910211
A PROCESS FOR THE PRODUCTION OF SPHEROIDISED HIGH STRENGTH LOW ALLOY (HSLA) STEELS FOR SOFT MAGNETIC APPLICATIONS
1109DEL89
0
0
A PROCESS FOR THE PRODUCTION OF SPHEROIDISED HIGH STRENGTH LOW ALLOY (HSLA) STEELS FOR SOFT MAGNETIC APPLICATIONS
1162DEL87
173333
19871231
A PROCESS FOR PRODUCTION OF ELECTRICAL CONTACT MATERIAL
1170DEL89
178655
19901218
A PROCESS FOR THE PRODUCTION OF A NOVEL FLUX USEFUL FOR THE PRODUCTION OF ZINC BASE ALLOYS AND A PROCESS FOR THE PRODUCTION OF SUCH ALLOYS USING THE FLUX
1171DEL89
176444
19910306
AN IMPROVED PROCESS FOR THE PRODUCTION OF ALLOYS
1172DEL89
176535
19910306
A PROCESS FOR MAKING LOW TUNGSTEN HIGH SPEED FOOL STEELS
1177DEL90
0
19901127
AN IMPROVED PROCESS FOR EXTRUSION OF MAGNESIUM/MAGNESIUM ALLOY BILLETS
1181DEL90
179538
19901127
AN IMPROVED PROCESS FOR THE PREPARATION OF CHROMIUM-COPPER ALLOY FOR USE IN ELECTRICAL APPLIANCES
1183DEL90
178026
19901127
AN IMPROVED PROCESS OF HEAT TREATMENT FOR MAGNESIUM ALLOYS
1203DEL90
180317
0
A PROCESS FOR THE PRODUCTION OF FE-MN-AL ALLOYS FOR RELAY CORE APPLICATIONS
1204DEL90
180512
0
A PROCESS FOR THE PRODUCTION OF FE-MN-AL ALLOYS FOR SOFT MAGNETIC APPLICATIONS
1253DEL89
176695
19901218
IMPROVED PROCESS FOR THE PREPARATION OF DENTAL AMALGAM ALLOY
1280DEL90
178597
19901218
A NOVEL FLUX FOR THE PRODUCTION OF SUPERIOR QUALITY ZINC BASE ALLOYS
1323DEL90
180358
19901226
AN IMPROVED PROCESS FOR THE PRODUCTION OF MAGNESIUM ALLOYS
0897DEL92
0
0
AN IMPROVED PROCESS FOR CONTINUOUS PRODUCTION OF STEEL BY THE ELECTRO SLAG SMELTING OF A ROD OR A SLAB MADE OF DIRECT REDUCED IRON.
0620DEL90
179958
19900622
AN IMPROVED PROCESS FOR MAKING LOW SILVER BRAZING FILLER ALLOY FOR ELECTRONIC INDUSTRY
0073DEL93
0
19930128
AN IMPROVED PROCESS FOR THE PRODUCTION OF HIGH ALUMINA CERAMICS HAVING CONSISTENT QUALITY
0436DEL90
0
0
AN IMPROVED PROCESS FOR THE PRODOCTION OF ELECTROLYTIC IRON POWDER FROM SPONGE IRON FINES
1173DEL90
178179
19911126
AN IMPROVED PROCESS FOR THE PRODUCTION OF HIGH PURITY FERRIC OXIDE FROM IRON POWDER
0126DEL93
0
19930215
A PROCESS FOR THE RECOVERY OF COPPER AND FERRO NICKEL FROM COPPER NICKEL CONTAINING ANODE SLAG GENERATED IN COPPER PLANTS
0127DEL93
0
19930215
A PROCESS FOR THE RECOVERY OF COPPER AND FERRO NICKEL CONTAINING ANODE SLAG GENERATED IN COPPER PLANTS
0196DEL93
0
19930303
AN IMPROVED PROCESS FOR THE EXTRACTION OF COPPER FROM CHALCOPYRITE
0224DEL90
0
19900308
A PROCESS FOR THE PRODUCTION OF ELECTROLYTIC MANGANESE DIOXIDE ACTIVATED MANGANESE DIOXIDE AND CHEMICAL MANGANESE DIOXIDE FROM NATURAL MANGANESE ORES
0273DEL89
175525
19890327
AN IMPROVED PROCESS FOR REFINING OF PIG IRON BY REMOVING SILICON PHOSPHORUS & SULPHUR IN A SINGLE STEP WITHOUT USING ANY GASEOUS OXYGEN
0372DEL93
0
19930413
A PROCESS FOR THE PRODUCTION OF CHEMICAL MANGANESE DIOXIDE AND ACTIVATED MANGANESE DIOXIDE AS A BY PRODUCT FROM NATURAL MANGANESE ORES.
0534DEL92
0
19920618
A PROCESS FOR THE REMOVAL OF SILICA AND SULPHUR FROM LOW GRADE TUNGSTEN CONCENTRATES
0753DEL91
0
19910814
AN IMPROVED FOR BETTER COBALT RECOVERY FROM ROAST REDUCED SEA NODULES USING TWO STAGE AMMONIACAL LEACHING
0866DEL91
0
19910918
A PROCESS FOR THE SELECTIVE EXTRACTION OF GOLD AND SILVER FROM CHALCOPYRITE CONCENTRATES THROUGH COMBINED PRESSURE THIOUREA LEACHING
0937DEL90
177999
19900921
A PROCESS FOR RECOVERING OF NICKEL FROM SPENT NICKEL CATALYST (NICKEL ASH)
0954DEL88
175737
19881104
AN IMPROVED PROCESS FOR THE REDUCTIVE LEACHING OF POLYMETALLIC MANGANIFERROUS SEA NODULES FOR THE RECOVERY OF COPPER NICKEL AND COBALT
0997DEL93
0
19930908
AN IMPROVED PROCESS FOR THE PRODUCTION OF ZINC SULPHATE FROM ZINC SILICATE ORE
1031DEL92
0
19921111
AN IMPROVED PROCESS FOR THE EXTRACTION OF METALLIC VALUES FROM SEA NODULES.
1032DEL92
0
19921111
AN IMPROVED PROCESS FOR THE EXTRACTION OF METALLIC VALUES FROM THE POLYMETALLIC SEA NODULES.
1182DEL90
179539
19901127
AN IMPROVED PROCESS FOR EXTRACTION OF NICKEL,COPPER AND COBALT FROM MAGANESE SEA NODULES USING LIGNITE AS REDUCTANT
1254DEL89
176480
19891228
A PROCESS FOR RECOVERING OF GOLD FROM DROSS GENERATED DURING GOLD REFINING THROUGH A CYANIDE FREE ROUTE
1278DEL91
0
0
A PROCESS FOR THE RECOVERY OF COPPER AND FERRO NICKEL FROM THE COPPER CONVERTER SLAG OF COPPER PLANT
1282DEL90
178843
19901218
AN IMPROVED PROCESS FOR EXTRACTION OF NICKEL AND COBALT FROM OVERBURDEN OF CHROMITE ORES
1285DEL90
178480
19901218
AN IMPROVED PROCESS FOR THE EXTRACTION OF NICKEL, COPPER AND COBALT FROM MANGANESE SEA NODULES USING HIGH VOLATILE NON COKING COAL AS REDUCTANT
0697DEL92
0
0
AN IMPROVED PROCESS FOR DIRECT ELECTROWINNING OF METALS FROM SEA NODULES FOR THE RECOVERY OF COPPER, NICKEL & COBALT
 

 

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