Inventor
RITSKO JOSEPH E
US43 patents
⚠️ This page may combine multiple inventors who share the name “RITSKO JOSEPH E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GTE PROD CORP
34 patentsUS4731111AMar 15, 1988
Hydrometallurical process for producing finely divided spherical refractory metal based powders
GTE PROD CORP126 citations96
US5114471AMay 19, 1992
Hydrometallurgical process for producing finely divided spherical maraging steel powders
GTE PROD CORP37 citations92
US4913731AApr 3, 1990
Process of making prealloyed tungsten alloy powders
GTE PROD CORP29 citations92
US4859237AAug 22, 1989
Hydrometallurgical process for producing spherical maraging steel powders with readily oxidizable alloying elements
GTE PROD CORP33 citations92
US4802915AFeb 7, 1989
Process for producing finely divided spherical metal powders containing an iron group metal and a readily oxidizable metal
GTE PROD CORP50 citations92
US4787934ANov 29, 1988
Hydrometallurgical process for producing spherical maraging steel powders utilizing spherical powder and elemental oxidizable species
GTE PROD CORP37 citations92
US4778517AOct 18, 1988
Hydrometallurgical process for producing finely divided copper and copper alloy powders
GTE PROD CORP31 citations92
US4772315ASep 20, 1988
Hydrometallurgical process for producing finely divided spherical maraging steel powders containing readily oxidizable alloying elements
GTE PROD CORP45 citations92
US4731110AMar 15, 1988
Hydrometallurigcal process for producing finely divided spherical precious metal based powders
GTE PROD CORP49 citations92
US4695439ASep 22, 1987
Yttrium oxide stabilized zirconium oxide
GTE PROD CORP40 citations89
US4348224ASep 7, 1982
Method for producing cobalt metal powder
GTE PROD CORP25 citations82
US4233063ANov 11, 1980
Process for producing cobalt powder
GTE PROD CORP27 citations79
US4948527AAug 14, 1990
Method of making europium activated yttrium oxide phosphor
GTE PROD CORP22 citations78
US4927456AMay 22, 1990
Hydrometallurgical process for producing finely divided iron based powders
GTE PROD CORP15 citations74
US4900590AFeb 13, 1990
Method for producing aluminum oxide coated iron powder
GTE PROD CORP14 citations74
US4859236AAug 22, 1989
Process for producing molybdenum-ruthenium metal powder
GTE PROD CORP17 citations73
US4710368ADec 1, 1987
High purity high surface area alpha crystalline silicon nitride
GTE PROD CORP6 citations73
US4684400AAug 4, 1987
Method for controlling the oxygen content in agglomerated molybdenum powders
GTE PROD CORP7 citations73
US4537750AAug 27, 1985
Process for producing high purity tantalum oxide
GTE PROD CORP12 citations73
US4495158AJan 22, 1985
Process for the recovery of tantalum values
GTE PROD CORP11 citations73
US4490340ADec 25, 1984
Process for the recovery of high purity tantalum oxide
GTE PROD CORP15 citations73
US4214894AJul 29, 1980
Method for producing cobalt metal powder
GTE PROD CORP11 citations73
US4348231ASep 7, 1982
Method of recovering metal carbides
GTE PROD CORP9 citations72
US5102454AApr 7, 1992
Hydrometallurgical process for producing irregular shaped powders with readily oxidizable alloying elements
GTE PROD CORP3 citations63
US4900587AFeb 13, 1990
Method for producing aluminum oxide coated iron-aluminum alloy powder
GTE PROD CORP4 citations63
US4898749AFeb 6, 1990
Method for producing aluminum oxide coated cobalt powder
GTE PROD CORP2 citations63
US4792351ADec 20, 1988
Hydrometallurgical process for producing irregular morphology powders
GTE PROD CORP4 citations63
US4723993AFeb 9, 1988
Hydrometallurgical process for producing finely divided spherical low melting temperature metal based powders
GTE PROD CORP5 citations63
US4626422ADec 2, 1986
High purity high surface area silicon nitride
GTE PROD CORP6 citations62
US4578251AMar 25, 1986
Removal of chromium from cobalt
GTE PROD CORP5 citations62
US4482526ANov 13, 1984
Recovery of tungsten and molybdenum from sulfur-bearing material
GTE PROD CORP5 citations62
US4379126AApr 5, 1983
Process for recovering tungsten values from alkali solutions
GTE PROD CORP4 citations62
US5000785AMar 19, 1991
Method for controlling the oxygen content in agglomerated molybdenum powders
GTE PROD CORP4 citations61
US4255397AMar 10, 1981
Process for removing tungsten from cemented tungsten carbide
GTE PROD CORP6 citations61
GTE SYLVANIA INC
7 patentsUS4070184AJan 24, 1978
Process for producing refractory carbide grade powder
GTE SYLVANIA INC45 citations90
US3973948AAug 10, 1976
Free flowing powder and process for producing it
GTE SYLVANIA INC30 citations79
US3956474AMay 11, 1976
Process for producing ammonium metatungstate from ammonium tungstate by digestion in silica
GTE SYLVANIA INC14 citations74
US4214895AJul 29, 1980
Method for producing cobalt metal powder
GTE SYLVANIA INC16 citations72
US4184868AJan 22, 1980
Method for producing extra fine cobalt metal powder
GTE SYLVANIA INC12 citations70
US4028095AJun 7, 1977
Free flowing powder and process for producing it
GTE SYLVANIA INC13 citations70
US3947616AMar 30, 1976
Process for producing cobalt coated refractory metal carbides
GTE SYLVANIA INC5 citations54