Tatsuo Numata
27Patents
5h-index
30Co-inventors
65Inventor score
Filing activity: Sep 29, 1976 → Oct 5, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4696694A | Pyridine derivatives and their herbicidal compositions | Chemistry; Metallurgy | 18 | Expired |
| US4824474A | Quinoline derivatives and herbicidal compositions and method of use thereof | Chemistry; Metallurgy | 8 | Expired |
| US4502148A | FM Stereo demodulator for demodulating stereo signals directly from an FM intermediate frequency signal | Electricity | 7 | Expired |
| US4109206A | Signal strength meter drive circuit | Physics | 6 | Expired |
| US4315221A | Switching circuit | Electricity | 5 | Expired |
| US4283793A | Muting signal generation circuit for an FM receiver | Electricity | 4 | Expired |
| US4908379A | Nitrogen-containing heterocyclic compounds and compositions for controlling and/or preventing pests and blights (diseases) | Chemistry; Metallurgy | 4 | Expired |
| US4539697A | FM Stereo demodulating circuit | Electricity | 4 | Expired |
| US4945091A | 3(2H)-pyridazinone compounds derivatives and compositions for controlling and/or preventing insect pests intermediates for such compounds, and a process for their manufacture | Chemistry; Metallurgy | 4 | Expired |
| US4399324A | Multiplex demodulation circuit | Electricity | 3 | Expired |
| US5278163A | Pyridazinone derivatives and compositions for controlling and/or preventing insect pests | Chemistry; Metallurgy | 3 | Expired |
| US4383136A | Muting circuit for AM stereophonic receiver | Electricity | 3 | Expired |
| US4409436A | Stereo pilot signal eliminating circuit for AM stereophonic receiver | Electricity | 3 | Expired |
| US4146747A | FM stereo demodulating device | Electricity | 3 | Expired |
| US4244055A | Tuner with phase locked loop synthesizer | Electricity | 2 | Expired |
| US4497063A | FM stereo demodulator | Electricity | 2 | Expired |
| US4523329A | FM receiver | Electricity | 2 | Expired |
| US4274057A | MPX Stereophonic demodulation | Electricity | 2 | Expired |
| US4489430A | FM Stereo demodulation circuit | Electricity | 2 | Expired |
| US4555671A | Circuit for driving a signal meter for a receiver | Electricity | 2 | Expired |
| US4280101A | Stereophonic signal demodulation circuit | Electricity | 1 | Expired |
| US4837345A | Process for the production of tetrahydropyran-3-one derivatives | Chemistry; Metallurgy | 1 | Expired |
| US4462994A | N-Containing heterocyclic ring-substituted O-arylphosphate derivatives, preparation thereof, and insecticides, acaricides and nematocides containing said derivatives | Chemistry; Metallurgy | 1 | Expired |
| US4228542A | Digital tuning FM stereophonic receiver including phase locked loop synthesizer | Electricity | 1 | Expired |
| US4495469A | Differential amplifier output leading circuit, and intermediate frequency amplifier using same | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.