Masumi Ito
40Patents
14h-index
44Co-inventors
81Inventor score
Filing activity: Jun 28, 1989 → Mar 30, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6474114B1 | Drum type washing machine with aligning structure for rotor and stator of drive motor | Emerging Cross-Sectional Technologies | 73 | Expired |
| US6539753B1 | Drum type washing machine | Textiles; Paper | 64 | Expired |
| US6557383B1 | Drum type washing machine | Textiles; Paper | 61 | Expired |
| US6564594B1 | Drum type washing machine | Textiles; Paper | 60 | Expired |
| US5867618A | Optical fiber grating and method of manufacturing the same | Physics | 59 | Expired |
| US5314518A | Method for producing glass preform for optical fiber | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5368887A | Process for producing thin glass film by sol-gel method | Chemistry; Metallurgy | 24 | Expired |
| US5859944A | Optical connector | Physics | 21 | Expired |
| US5627933A | Optical waveguide and process for producing it | Physics | 19 | Expired |
| US5755849A | Method for elongating glass preform | Chemistry; Metallurgy | 18 | Expired |
| US5790726A | Optical waveguide and process for producing it | Physics | 17 | Expired |
| US5883990A | Low transmission loss optical fiber having a grating | Physics | 16 | Expired |
| US5676725A | Method of manufacturing single-mode optical fiber | Chemistry; Metallurgy | 14 | Expired |
| US5496787A | Process for producing a vanadium-phosphorus oxide catalyst precursor | Performing Operations; Transporting | 14 | Expired |
| US5021384A | Process for producing crystalline oxide of vanadium-phosphorus system and catalyst containing the crystalline oxide | Chemistry; Metallurgy | 11 | Expired |
| US6530245B1 | Drum type washing machine with drying function | Textiles; Paper | 11 | Expired |
| US5530144A | Process for producing a phosphorus-vanadium oxide catalyst precursor, process for producing a phosphorus-vanadium oxide catalyst, and process for producing maleic anhydride by vapor phase oxidation using the catalyst | Performing Operations; Transporting | 11 | Expired |
| US5788734A | Method for drawing glass preform for optical fiber | Chemistry; Metallurgy | 10 | Expired |
| US5243677A | Quartz optical waveguide and method for producing the same | Physics | 10 | Expired |
| US5470369A | Process for consolidation of porous preform for optical fiber | Chemistry; Metallurgy | 10 | Expired |
| US4978378A | Method for producing glass preform for optical fiber | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5224185A | Optical switch | Physics | 9 | Expired |
| US5330548A | Method for producing glass preform for optical fiber | Chemistry; Metallurgy | 8 | Expired |
| US5895515A | Increasing a fluorine compound flow rate during a VAD process | Physics | 8 | Expired |
| US5193137A | Quartz optical waveguide and method for producing the same | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.