Inventor

GRAY RONALD D

US7 patents

⚠️ This page may combine multiple inventors who share the name “GRAY RONALD D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PENNSYLVANIA ENGINEERING CORP

2 patents

US4612043ASep 16, 1986

Steel making method

PENNSYLVANIA ENGINEERING CORP25 citations75

US3956572AMay 11, 1976

Cooling means for electric arc furnaces

PENNSYLVANIA ENGINEERING CORP4 citations60

MIDREX INTERNAT B V ROTTERDAM

1 patent

US6685761B1Feb 3, 2004

Method for producing beneficiated titanium oxides

MIDREX INTERNAT B V ROTTERDAM43 citations91

MIDREX INT BV

1 patent

US6582491B2Jun 24, 2003

Method for producing molten iron in duplex furnaces

MIDREX INT BV27 citations91

MIDREX TECHNOLOGIES INC

1 patent

US6251156B1Jun 26, 2001

Method of producing molten iron in duplex furnaces

MIDREX TECHNOLOGIES INC30 citations91

GRAY RONALD D

1 patent

US5289765AMar 1, 1994

Device with flexible elongate member for binding and toting tree trimmings and the like

GRAY RONALD D9 citations67

LEOTROMELT CORP

1 patent

US4004793AJan 25, 1977

Dual holding furnace

LEOTROMELT CORP6 citations55