Keiichi Numata
12Patents
4h-index
27Co-inventors
60Inventor score
Filing activity: Oct 10, 1986 → May 22, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7345521B2 | High frequency switch circuit | Electricity | 66 | Expired |
| US6987414B2 | High frequency switch circuit | Electricity | 14 | Expired |
| US4742047A | Semi-synthetic peptide antibiotics | Chemistry; Metallurgy | 8 | Expired |
| US7915946B2 | Switch circuit for high frequency signals wherein distortion of the signals are suppressed | Electricity | 5 | Active |
| US6201416A | Field effect transistor logic circuit with reduced power consumption | Electricity | 4 | Expired |
| US7180375B2 | PLL circuit | Electricity | 3 | Expired |
| US4789731A | Semi-synthetic peptide antibiotics | Chemistry; Metallurgy | 2 | Expired |
| US5619146A | Switching speed fluctuation detecting apparatus for logic circuit arrangement | Electricity | 1 | Expired |
| US5096884A | Glidobactin PF-1 peptide antibiotics | Human Necessities | 1 | Expired |
| US5639735A | Antitumor antibiotic compounds: hayumicins and analogs thereof | Human Necessities | 0 | Expired |
| US7298215B2 | Amplifying circuit | Electricity | 0 | Expired |
| US8318684B2 | Antibiotics, bispolides A1, A2, and A3 as well as bispolides B1, B2a, B2b and B3 and processes for producing said antibiotics | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.