Inventor · disambiguated record
Ryo Yoshida
Also filed as: TAKEMOTO ICHIKI · YOSHIDA RYO
82 granted patents·521 citations·filing 1973–1993
99Inventor score
Top patents by PatentIndex Score
82 records- 0197US4427438AN-(2-Fluoro-4-halo-5-substituted phenyl) hydantoinsSUMITOMO CHEMICAL CO·Filed 1982·Granted Jan 24, 1984·53 cites·12 claims
- 0295US4452981A4-(2-Fluoro-4-halo-5-substituted phenyl)urazols, and their production and useSUMITOMO CHEMICAL CO·Filed 1982·Granted Jun 5, 1984·28 cites·9 claims
- 0392US4431822ATetrahydrophthalimides, and their production and useSUMITOMO CHEMICAL CO·Filed 1982·Granted Feb 14, 1984·32 cites·3 claims
- 0490US4968340AAlkanoic acid derivatives and herbicidal compositionsKUMIAI CHEMICAL INDUSTRY CO·Filed 1989·Granted Nov 6, 1990·28 cites·9 claims
- 0590US4129436AN'-[4-(substituted phenethyloxy)phenyl]-N-methyl-N-methoxyureaSUMITOMO CHEMICAL CO·Filed 1978·Granted Dec 12, 1978·22 cites·7 claims
- 0689US4670046ATetrahydrophthalimide compounds, as post-emergence herbicides for use in soybean fieldsSUMITOMO CHEMICAL CO·Filed 1983·Granted Jun 2, 1987·15 cites·3 claims
- 0785US4484941ATetrahydrophthalimides, and their production and use as herbicidesSUMITOMO CHEMICAL CO·Filed 1982·Granted Nov 27, 1984·14 cites·8 claims
- 0885US4437877A2-(2-Fluoro-4-halo-5-substituted phenyl) hydantoins and useSUMITOMO CHEMICAL CO·Filed 1982·Granted Mar 20, 1984·14 cites·2 claims
- 0984US4484940ATetrahydrophthalimides, and their production and use as herbicidesSUMITOMO CHEMICAL CO·Filed 1982·Granted Nov 27, 1984·12 cites·5 claims
- 1084US4260411AN'-phenyl-N-methylurea derivativesSUMITOMO CHEMICAL CO·Filed 1979·Granted Apr 7, 1981·12 cites·18 claims
- 1182US4123256AN-(4-substituted benzyloxy)phenyl)-N-methyl-N-methoxyureaSUMITOMO CHEMICAL CO·Filed 1977·Granted Oct 31, 1978·12 cites·11 claims
- 1279US4670043AHerbicidal 2-substituted phenyl-4,5,6,7-tetrahydro-2H-indazolesSUMITOMO CHEMICAL CO·Filed 1985·Granted Jun 2, 1987·15 cites·10 claims
- 1378US4334912AUrea derivatives, and their production and useSUMITOMO CHEMICAL CO·Filed 1980·Granted Jun 15, 1982·11 cites·14 claims
- 1477US5118339APyrimidine derivatives and herbicidal composition containing the sameKUMIAI CHEMICAL CO·Filed 1990·Granted Jun 2, 1992·20 cites·7 claims
- 1577US4770695AN-substituted phenyl tetrahydrophthalimide compounds, and their production and herbicidal useSUMITOMO CHEMICAL CO·Filed 1986·Granted Sep 13, 1988·11 cites·19 claims
- 1677US4593094A2-[[[4-halo-2-fluoro-5(alkyl or alkenyloxy)phenyl]amino]carbonyl or thiocarbonyl]-3,4,5,6-tetrahydro-1(2H)-pyridazinecarboxylic acid compounds and lower alkyl esters thereofSUMITOMO CHEMICAL CO·Filed 1984·Granted Jun 3, 1986·7 cites·13 claims
- 1777US4309212AHerbicidal compositions and methods employing urea derivativesSUMITOMO CHEMICAL CO·Filed 1978·Granted Jan 5, 1982·9 cites·11 claims
- 1875US4684397A2-Substituted phenyl-4,5,6,7-tetrahydro-2H-iso-indole-1,3-diones, and their production and useSUMITOMO CHEMICAL CO·Filed 1985·Granted Aug 4, 1987·8 cites·24 claims
- 1975US4249938AN-Phenyl-N-methyl-urea derivatives, and their production and useSUMITOMO CHEMICAL CO·Filed 1978·Granted Feb 10, 1981·9 cites·14 claims
- 2073US4624699A2-substituted phenyl-4,5,6,7-tetrahydro-2H-indazoles, their production, and use as herbicidesSUMITOMO CHEMICAL CO·Filed 1985·Granted Nov 25, 1986·8 cites·8 claims
- 2172US5087289AAlkanoic acid derivatives and herbicidal compositionsKUMIAI CHEMICAL INDUSTRY CO·Filed 1990·Granted Feb 11, 1992·12 cites·9 claims
- 2272US4437880AN'-Phenyl-N-methylurea derivativesSUMITOMO CHEMICAL CO·Filed 1981·Granted Mar 20, 1984·10 cites·8 claims
- 2371US4752325A2-substituted phenyl-3-chlorotetrahydro-2H-indazoles composition containing them, and herbicidal method of using themSUMITOMO CHEMICAL CO·Filed 1985·Granted Jun 21, 1988·7 cites·8 claims
- 2470US5114463APyrimidine derivatives and herbicidal compositions containing the sameKUMIAI CHEMICAL INDUSTRY CO·Filed 1991·Granted May 19, 1992·9 cites·9 claims
- 2570US4608080AHerbicidal 2-phenyl-4,5,6,7-tetrahydro-2H-indazolesSUMITOMO CHEMICAL CO·Filed 1985·Granted Aug 26, 1986·8 cites·7 claims
- 2670US4374662ADiphenyl sulfone compounds, and their production and useSUMITOMO CHEMICAL CO·Filed 1981·Granted Feb 22, 1983·6 cites·11 claims
- 2769US4144049AN-(4-Benzyloxyphenyl)-N-methyl-N-methoxyureaSUMITOMO CHEMICAL CO·Filed 1977·Granted Mar 13, 1979·8 cites·4 claims
- 2868US4801408A2-substituted phenyl-4,5,6,7-tetrahydro-2H-isoindole-1,3-diones, and their production and useSUMITOMO CHEMICAL CO·Filed 1987·Granted Jan 31, 1989·5 cites·12 claims
- 2967US4401459AHerbicidal composition having enhanced herbicidal activity with high selectivity to soybeanSUMITOMO CHEMICAL CO·Filed 1979·Granted Aug 30, 1983·6 cites·11 claims
- 3066US4881970ATetrahydropthalimide compounds, and their production and use as herbicidesSUMITOMO CHEMICAL CO·Filed 1987·Granted Nov 21, 1989·6 cites·53 claims
- 3165US4702764ACarbamoyltriazoles, and their production and useSUMITOMO CHEMICAL CO·Filed 1984·Granted Oct 27, 1987·4 cites·5 claims
- 3265US4599104AHerbicidal pyridotriazolium compoundsSUMITOMO CHEMICAL CO·Filed 1984·Granted Jul 8, 1986·5 cites·20 claims
- 3365US4349379AEmulsifiable concentrate for weed controlSUMITOMO CHEMICAL CO·Filed 1980·Granted Sep 14, 1982·6 cites·3 claims
- 3463US4622063A4-(2-fluoro-4-halo-5-substituted phenyl)urazols, and herbicidal useSUMITOMO CHEMICAL CO·Filed 1984·Granted Nov 11, 1986·3 cites·19 claims
- 3563US4486223ADiphenyl sulfone compounds, and useSUMITOMO CHEMICAL CO·Filed 1982·Granted Dec 4, 1984·3 cites·18 claims
- 3662US4595409ASubstituted phenyl-4,5,6,7-tetrahydro-2H-isoindole-1,3-diones, and their production and useSUMITOMO CHEMICAL CO·Filed 1984·Granted Jun 17, 1986·4 cites·13 claims
- 3759US4810271ACarbamoyltriazoles, and their production and useSUMITOMO CHEMICAL CO·Filed 1987·Granted Mar 7, 1989·5 cites·4 claims
- 3858US4736068ATetrahydrophthalimides and their production and use as herbicidesSUMITOMO CHEMICAL CO·Filed 1986·Granted Apr 5, 1988·3 cites·5 claims
- 3957US4486604ADiphenyl sulfone compoundsSUMITOMO CHEMICAL CO·Filed 1982·Granted Dec 4, 1984·2 cites·1 claims
- 4056US5173103AHerbicidal composition comprising2-[7-fluoro-3,4-dihydro-3-oxo-4-(2-pyropynyl)-2H-1,4-benzoxazin-6-yl]-4,5,6,7-tetrahydro-1H-isoindole-1,3(2H)-dione and either glufosinate or bialaphosSUMITOMO CHEMICAL CO·Filed 1992·Granted Dec 22, 1992·8 cites·18 claims
- 4156US4938795ATetrahydrophthalimide compounds, and their production and useSUMITOMO CHEMICAL CO·Filed 1986·Granted Jul 3, 1990·3 cites·12 claims
- 4255US4826533AN-(substituted phenyl)-tetrahydrophthalimide compounds, and their production and herbicide useSUMITOMO CHEMICAL CO·Filed 1987·Granted May 2, 1989·3 cites·21 claims
- 4355US4427596AN-[2-(Cyclopropyl) ethoxy] phenylanilide derivatives, and their production and useSUMITOMO CHEMICAL CO·Filed 1981·Granted Jan 24, 1984·3 cites·5 claims
- 4455US3997526AAmido phosphorothiolate pesticideSUMITOMO CHEMICAL CO·Filed 1973·Granted Dec 14, 1976·3 cites·3 claims
- 4554US5191105ATetrahydrophthalimides, and their production and use as herbicidesSUMITOMO CHEMICAL CO·Filed 1991·Granted Mar 2, 1993·4 cites·7 claims
- 4654US4470841ACertain herbicidal phosphonatesSUMITOMO CHEMICAL CO·Filed 1982·Granted Sep 11, 1984·3 cites·20 claims
- 4753US4280835AHerbicidal N-phenyl-N-methylurea derivativesSUMITOMO CHEMICAL CO·Filed 1978·Granted Jul 28, 1981·4 cites·9 claims
- 4852US4709049A2-substituted phenyl-4,5,6,7,-tetrahydro-2H-indole-1,3,-diones, and their production and useSUMITOMO CHEMICAL CO·Filed 1985·Granted Nov 24, 1987·2 cites·3 claims
- 4951US4906289AHerbicidal compositionSUMITOMO CHEMICAL CO·Filed 1989·Granted Mar 6, 1990·4 cites·13 claims
- 5051US4508562ABenzylsulfinyl pyridine-N-oxides and their herbicidal method of useSUMITOMO CHEMICAL CO·Filed 1983·Granted Apr 2, 1985·2 cites·4 claims
Showing the top 50 of 82 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Ryo Yoshida files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →