Satoshi Katayama
64Patents
9h-index
115Co-inventors
81Inventor score
Filing activity: Jul 24, 1978 → Aug 22, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5958638A | Electrophotographic photoconductor and method of producing same | Physics | 91 | Expired |
| US5489496A | Electrophotographic photoconductor and a method for forming the same | Physics | 44 | Expired |
| US8846885B2 | Oligonucleotide with protected base | Chemistry; Metallurgy | 21 | Active |
| US4929623A | Benzothiazole derivative | Chemistry; Metallurgy | 19 | Expired |
| US5896066A | PLL synthesizer having a reset circuit | Electricity | 19 | Expired |
| US5391448A | Electrophotographic photoconductor and a method for manufacturing the same | Physics | 15 | Expired |
| US6757349B1 | PLL frequency synthesizer with lock detection circuit | Electricity | 14 | Expired |
| US5492786A | Electrophotographic photoreceptor | Physics | 10 | Expired |
| US5409909A | 1,4-diazepine derivative and its pharmaceutical use | Chemistry; Metallurgy | 9 | Expired |
| US5382579A | Triazolo-1,4-diazepine derivatives and their use in pharmaceuticals | Chemistry; Metallurgy | 9 | Expired |
| US6136484A | Electrophotographic photoreceptor, process for production thereof, and image-forming apparatus using same | Physics | 9 | Expired |
| US5116706A | 1,2,4,5-benzoylenebis(naphtho[1,8-de]pyrimidine) compounds and their use in photosensitive layers | Physics | 7 | Expired |
| US6797554B2 | Method of manufacturing semiconductor integrated circuit having capacitor and silicided and non-silicided transistors | Electricity | 6 | Expired |
| US9029528B2 | Solution-based method of making oligonucleotides via phosphoramidite coupling | Emerging Cross-Sectional Technologies | 6 | Active |
| US6500946B1 | Methods for producing nucleoside derivatives and intermediates therefor | Chemistry; Metallurgy | 4 | Expired |
| US5221671A | Triazolo-1,4-diazepine derivatives and their use in pharmaceuticals | Chemistry; Metallurgy | 4 | Expired |
| US5372677A | Method of manufacturing semiconductor devices | Electricity | 4 | Expired |
| US8252557B2 | Peptide-containing culture medium for culturing animal cell | Chemistry; Metallurgy | 4 | Active |
| US6252075A | Process for producing purine derivatives | Chemistry; Metallurgy | 4 | Expired |
| US4983741A | 1,2,4,5-benzoylenebis(naphtho[2,3-d]imidazole) compounds and photosensitive members containing them | Physics | 4 | Expired |
| US6136485A | Electrophotographic photoreceptor, process for production thereof, and image-forming apparatus using same | Physics | 3 | Expired |
| US5767316A | Process for producing 3-amino-2-oxo-1-halogenopropane derivatives | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9790497B2 | Morpholino oligonucleotide manufacturing method | Emerging Cross-Sectional Technologies | 3 | Active |
| US10625817B2 | Electrically power assisted bicycle with ambient light controlled headlight | Emerging Cross-Sectional Technologies | 2 | Active |
| US5942617A | Process for producing purine derivatives | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.