Hitoshi Ohta
43Patents
12h-index
63Co-inventors
84Inventor score
Filing activity: Feb 17, 1982 → Mar 22, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5954866A | Ink for ink jet recording and image forming method using the same | Performing Operations; Transporting | 66 | Expired |
| US5883760A | Magnetic structure and magnetic head using the same | Physics | 59 | Expired |
| US6236538A | Magnetic structure and magnetic head using the same | Physics | 45 | Expired |
| US6720367B2 | Ink composition comprising cationic, water-soluble resin | Chemistry; Metallurgy | 44 | Expired |
| US6524383B2 | Method for manufacturing pigment dispersion, pigment dispersion obtained by this method, and ink jet recording ink using same | Chemistry; Metallurgy | 35 | Expired |
| US6802893B1 | Ink for ink-jet recording and process for producing the same, ink set for ink-jet recording, and ink cartridge | Chemistry; Metallurgy | 26 | Expired |
| US4397451A | Furnace for the heat treatment of scale-covered steel | Chemistry; Metallurgy | 24 | Expired |
| US6689328B1 | Metal honeycomb body for exhaust gas purification catalyst and method for producing the same | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5996228A | Monolith-holding element, process for producing the same, catalytic converter using a monolith member and process for producing the same | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5648176A | Metallic honeycomb body for supporting catalyst for automobiles and process for producing the same | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6211265A | Water base ink set for ink jet recording | Chemistry; Metallurgy | 15 | Expired |
| US5541369A | Printed circuit board having transmission lines with varying thicknesses | Electricity | 13 | Expired |
| US4836980A | Method of sintering an injection-molded article | Performing Operations; Transporting | 9 | Expired |
| US6118699A | Semiconductor memory device using MONOS type nonvolatile memory cell | Electricity | 7 | Expired |
| US5665669A | Metallic honeycomb body for supporting catalyst and production method thereof | Performing Operations; Transporting | 7 | Expired |
| US6395849B1 | Processes for producing N,N-dialkylallylamine polymers and N,N-dialkyllylamine polymers | Chemistry; Metallurgy | 5 | Expired |
| US8911074B2 | Ink jet recording method | Performing Operations; Transporting | 5 | Active |
| US6809128B2 | Ink composition comprising cationic water-soluble resin, and ink set | Chemistry; Metallurgy | 4 | Expired |
| US10113851B2 | Probe head rotating mechanism | Physics | 3 | Active |
| US9624393B2 | Ink jet recording method, ink jet recording apparatus, and recorded matter | Emerging Cross-Sectional Technologies | 3 | Active |
| US7265164B2 | Ink composition containing cationic water-soluble polymer | Chemistry; Metallurgy | 3 | Expired |
| US8757784B2 | Ink for ink jet recording and recording method | Chemistry; Metallurgy | 2 | Active |
| US8210672B2 | Printing method using inkjet recording method and printing apparatus | Performing Operations; Transporting | 2 | Active |
| US9309423B2 | Ink composition and image forming method | Chemistry; Metallurgy | 2 | Active |
| US7001935B2 | Ink for ink jet printing process and printed matter obtained using the same | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.