Inventor
GRAIFF LEONARD B
US11 patents
⚠️ This page may combine multiple inventors who share the name “GRAIFF LEONARD B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHELL OIL CO
10 patentsUS4357148ANov 2, 1982
Method and fuel composition for control or reversal of octane requirement increase and for improved fuel economy
SHELL OIL CO59 citations95
US4300494ANov 17, 1981
Thermal insulated intake ports
SHELL OIL CO80 citations93
US5300218AApr 5, 1994
Reduction of diesel engine particulate emissions by contacting diesel fuel with a carbon molecular sieve adsorbent
SHELL OIL CO24 citations89
US5503644AApr 2, 1996
Gasoline composition for reducing intake valve deposits in port fuel injected engines
SHELL OIL CO30 citations86
US4846848AJul 11, 1989
Gasoline composition
SHELL OIL CO10 citations73
US4666529AMay 19, 1987
Method for reducing combustion chamber deposits from an internal combustion engine
SHELL OIL CO17 citations73
US4155718AMay 22, 1979
Method and composition for inhibition or prevention of octane requirement increase
SHELL OIL CO18 citations73
US4687034AAug 18, 1987
Controlled release insert for a diesel fuel supply nozzle and method of adding a petroleum substrate over said insert
SHELL OIL CO16 citations69
US4389221AJun 21, 1983
Gasoline composition and method for reducing fuel consumption
SHELL OIL CO5 citations56
US5334308AAug 2, 1994
Reduction of jet engine smoke emissions by contacting jet fuel with a carbon molecular sieve adsorbent
SHELL OIL CO6 citations54