Inventor · Romford, GB

Edgar W. Parnell

18Patents
10h-index
13Co-inventors
69Inventor score

Filing activity: Dec 22, 1975 → Jul 16, 1999

Most-cited inventions

PatentTitleAreaCited byStatus
US5232940A Derivatives of N-phenylpyrazoles Chemistry; Metallurgy 192 Expired
US5719046A Sulfonamide resistance genes and their use Chemistry; Metallurgy 54 Expired
US5597717A Sulfonamide resistance genes and their use Chemistry; Metallurgy 44 Expired
US5547974A Derivatives of N-phenylpyrazoles Chemistry; Metallurgy 36 Expired
US5608077A Derivatives of n-phenylpyrazoles Chemistry; Metallurgy 24 Expired
US5714191A Derivatives of N-phenylpyrazoles Chemistry; Metallurgy 23 Expired
US5916618A Derivatives of N-phenylpyrazoles Chemistry; Metallurgy 21 Expired
US4459150A 5-Acylamino-4-cyano-1-phenylpyrazole derivatives and use as herbicides Chemistry; Metallurgy 18 Expired
US4496390A N-Phenylpyrazole derivatives Chemistry; Metallurgy 15 Expired
US4618366A Certain N-(2,4-difluorophenyl)-2-(3-trifluoromethylphenoxy)-nicotinamides having herbicidal activity Chemistry; Metallurgy 12 Expired
US5633444A Sulfonamide resistance genes and their use Chemistry; Metallurgy 9 Expired
US6372774B1 Derivatives of N-phenylpyrazoles Chemistry; Metallurgy 7 Expired
US4505740A Herbicidal 5-amino-4-cyano-1-phenyl-pyrazoles Chemistry; Metallurgy 6 Expired
US4629495A Herbicidal 5-amino-4-cyano-1-phenylpyrazoles Chemistry; Metallurgy 4 Expired
US4347252A Rodenticidal 1-(3,5-bistrifluoromethylphenyl)-3-(4-t-butylpiperidino)prop-1-yne Chemistry; Metallurgy 2 Expired
US4067723A Pyridazine pesticides Chemistry; Metallurgy 1 Expired
US4246021A Imidazole derivatives Chemistry; Metallurgy 1 Expired
US4541963A 4-Trifluoromethylphenylhydrazinomethylene-malononitriles Chemistry; Metallurgy 0 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.