申请人 |
CHEVRON RESEARCH AND TECHNOLOGY CO., SAN FRANCISCO, CALIF., US |
发明人 |
HEMPKINS, W. BRENT, SAN FRANCISCO CALIFORNIA 94114, US;KINSBOROUGH, ROGER H., KINGWOOD TEXAS 77339, US;LOHEC, WESLEY E., HARVEY LOUISIANA 70058, US;NINI, CONROY J., MIDLAND TEXAS 79709, US |