Inventor
SPOHN RALPH J
5 patents
Patents
5 patentsUS4255279AMar 10, 1981
Dual demetalling of oxo products with catalyst recycle
EXXON RESEARCH ENGINEERING CO35 citations87
US4499317AFeb 12, 1985
Modified zeolite catalyst composition and process for alkylating toluene with methanol to form styrene
EXXON RESEARCH ENGINEERING CO21 citations79
US4483936ANov 20, 1984
Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene
EXXON RESEARCH ENGINEERING CO24 citations79
US4487713ADec 11, 1984
Production of isocyanates from esters of aromatic carbamic acids (urethanes)
EXXON RESEARCH ENGINEERING CO8 citations70
US4321402AMar 23, 1982
Carbamate process
EXXON RESEARCH ENGINEERING CO4 citations57