P

Inventor

BARKER MICHAEL D

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

SHELL OIL CO

7 patents
US4289884ASep 15, 1981

Herbicidal tetrahydrofuran derivatives

SHELL OIL CO9 citations72
US4116669ASep 26, 1978

Herbicidal tetrahydrofuran derivatives

SHELL OIL CO13 citations66
US4388104AJun 14, 1983

3-Phenylmethoxytetrahydropyran herbicides

SHELL OIL CO4 citations62
US4330320AMay 18, 1982

Herbicidal tetrahydrofuran derivatives

SHELL OIL CO4 citations61
US4400198AAug 23, 1983

Herbicidal tetrahydrofuran derivatives

SHELL OIL CO4 citations59
US4004911AJan 25, 1977

Trihydric alcohol derivatives

SHELL OIL CO3 citations59
US4042369AAug 16, 1977

Compositions and methods of combatting weeds in crops with 2,6-dihalobenzyl ether

SHELL OIL CO1 citations48

WICKHAM AND COMPANY LIMITED D

2 patents
US4531617AJul 30, 1985

Overspeed safety braking device

WICKHAM AND COMPANY LIMITED D70 citations89
US4556364ADec 3, 1985

Centrifugal pumps

WICKHAM AND COMPANY LIMITED D21 citations80

BARKER MICHAEL D

1 patent
US4254544AMar 10, 1981

Method of casting photographic representation having tonal and height contrasts and the article so cast

BARKER MICHAEL D18 citations68