DR

David A. Roberts

RA Rhone-Poulenc Agriculture: 10 patents #3 of 58Top 6%
MB May & Baker: 7 patents #7 of 85Top 9%
RA Rhone-Poulenc Agro: 1 patents #21 of 72Top 30%
📍 Bedford, GB: #2 of 287 inventorsTop 1%
Overall (All Time): #242,325 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
6372774 Derivatives of N-phenylpyrazoles Leslie R. Hatton, Ian G. Buntain, David William Hawkins, Edgar W. Parnell, Christopher J. Pearson 2002-04-16
6133432 Processes for preparing pesticidal intermediates David William Hawkins, John H. Wilkinson, Jean-Louis Clavel 2000-10-17
5916618 Derivatives of N-phenylpyrazoles Leslie R. Hatton, Ian G. Buntain, David William Hawkins, Edgar W. Parnell, Christopher J. Pearson 1999-06-29
5747424 Herbicidal 4-substituted isoxazol Susan Mary Cramp, Derek Ian Wallis, Jean-Paul Bulot 1998-05-05
5714191 Derivatives of N-phenylpyrazoles Leslie R. Hatton, Ian G. Buntain, David William Hawkins, Edgar W. Parnell, Christopher J. Pearson 1998-02-03
5656573 Herbicidal 4-substituted isoxazoles Susan Mary Cramp, Paul A. Cain, Derek Ian Wallis, Jean-Paul Bulot, Gillian Mary Little +1 more 1997-08-12
5650533 Intermediates to herbicidal 4-substituted isoxazoles Susan Mary Cramp, Derek Ian Wallis, Jean-Paul Bulot 1997-07-22
5608077 Derivatives of n-phenylpyrazoles Leslie R. Hatton, Ian G. Buntain, David William Hawkins, Edgar W. Parnell, Christopher J. Pearson 1997-03-04
5547974 Derivatives of N-phenylpyrazoles Leslie R. Hatton, Ian G. Buntain, David William Hawkins, Edgar W. Parnell, Christopher J. Pearson 1996-08-20
5232940 Derivatives of N-phenylpyrazoles Leslie R. Hatton, Ian G. Buntain, David William Hawkins, Edgar W. Parnell, Christopher J. Pearson 1993-08-03
5177100 N-phenylpyrazole derivatives David William Hawkins, Ian G. Buntain, Ross McGuire 1993-01-05
5104994 N-phenylpyrazole derivatives David William Hawkins, Ian G. Buntain, Ross McGuire 1992-04-14
5055482 N-phenylpyrazol-4-yl ether derivatives Leslie R. Hatton, David William Hawkins, Richard G. Pennicard 1991-10-08
4963575 Derivatives of N-phenylpyrazoles, compositions and use Ian G. Buntain, Leslie R. Hatton, David William Hawkins, Christopher J. Pearson 1990-10-16
4629495 Herbicidal 5-amino-4-cyano-1-phenylpyrazoles Leslie R. Hatton, Edgar W. Parnell 1986-12-16
4541963 4-Trifluoromethylphenylhydrazinomethylene-malononitriles Leslie R. Hatton, Edgar W. Parnell 1985-09-17
4505740 Herbicidal 5-amino-4-cyano-1-phenyl-pyrazoles Leslie R. Hatton, Edgar W. Parnell 1985-03-19
4496390 N-Phenylpyrazole derivatives Leslie R. Hatton, Edgar W. Parnell 1985-01-29
4459150 5-Acylamino-4-cyano-1-phenylpyrazole derivatives and use as herbicides Leslie R. Hatton, Edgar W. Parnell 1984-07-10