Kei Maruyama
17Patents
4h-index
25Co-inventors
60Inventor score
Filing activity: Jun 3, 1997 → Oct 7, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6455639B1 | Oxirane derivative and process for the preparation thereof | Physics | 46 | Expired |
| US5872191A | Process for producing a polyoxyalkylene derivatives substituted with succinimidyl group | Chemistry; Metallurgy | 8 | Expired |
| US5840973A | Process for producing a polyoxyalkylenecarboxylic acid | Chemistry; Metallurgy | 7 | Expired |
| US5767284A | Process for producing a polyoxyalkylene derivative substituted with succinimidyl group | Chemistry; Metallurgy | 7 | Expired |
| US9268287B2 | Sheet feed device and image forming apparatus | Performing Operations; Transporting | 4 | Active |
| US8518994B2 | Arginine derivative and cosmetic containing the same | Chemistry; Metallurgy | 2 | Active |
| US10413559B2 | Method for treating demyelinating disease | Human Necessities | 1 | Active |
| US9199811B2 | Sheet conveying device and image forming apparatus including the sheet conveying device | Physics | 1 | Active |
| US8232321B2 | Alkylene oxide derivative and skin external preparation containing the same | Chemistry; Metallurgy | 1 | Active |
| US10035675B2 | Solenoid device and image forming apparatus therewith | Electricity | 0 | Active |
| US7613416B2 | Toner container with grippable recesses and image forming apparatus having such a toner container | Physics | 0 | Active |
| US11142009B2 | Cleaning device and ink jet recording apparatus | Performing Operations; Transporting | 0 | Active |
| US9996043B2 | Image forming apparatus and method for control of suction of air passed through fixing unit | Physics | 0 | Active |
| US7684739B2 | Toner transport apparatus and image forming apparatus | Physics | 0 | Active |
| US11319177B2 | Sensor unit and image forming apparatus therewith | Performing Operations; Transporting | 0 | Active |
| US9193654B2 | Cosmetic bases and cosmetics containing the same | Human Necessities | 0 | Active |
| US11041038B2 | Water repellent composition | Textiles; Paper | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.