Hajime Hasegawa
98Patents
11h-index
125Co-inventors
81Inventor score
Filing activity: Jul 31, 1975 → Sep 28, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5862476A | Mobile station equipment and base station equipment and control method | Emerging Cross-Sectional Technologies | 78 | Expired |
| US6493561B1 | Mobile communication system enabling efficient use of small-zone base stations | Electricity | 41 | Expired |
| US9399404B2 | Charging system for all-solid-state battery | Emerging Cross-Sectional Technologies | 28 | Active |
| US6232562A | Hybrid integrated circuit device | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5093378A | Process for producing flexible polyurethane foam | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6032050A | Method for standby control in a mobile telecommunications network setting standby conditions conforming to different modes of communication and mobile unit using same | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4014809A | Process for obtaining a polyol-containing homogeneous liquid composition useful for the production of rigid polyurethane foam from a rigid polyurethane foam | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5893821A | Roller for electrophotographic apparatus | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7011556B2 | Contact module, connector and method of producing said contact module | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4923904A | Process for producing polyurethane foam | Chemistry; Metallurgy | 13 | Expired |
| US8125939B2 | Base station apparatus, communication method and mobile communication system for restraining traffic quantity | Electricity | 11 | Active |
| US6735446B1 | Mobile communication system and a control unit of the system for efficient use of vacant channels in one-way communication | Electricity | 11 | Expired |
| US4030196A | Hair cutter | Performing Operations; Transporting | 10 | Expired |
| US6073024A | Mobile communication system and method for performing communication control within a base station and a mobile station | Electricity | 10 | Expired |
| US4666949A | Thermochromic polyurethane foam | Chemistry; Metallurgy | 9 | Expired |
| US7936143B2 | Device for preventing sway of suspended load | Performing Operations; Transporting | 8 | Active |
| US6105249A | Process for producing an electrographics roller | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4044046A | Method for recovering polyol from a polyurethane | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8159997B2 | Wireless communication system, wireless base station, user equipment, and multi service management equipment | Electricity | 5 | Active |
| US7558581B2 | Apparatus and method for resetting physical channel | Electricity | 5 | Active |
| US6443219B1 | Method for casting molten metal | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7665193B2 | Metallic double-sided element and slide fastener | Emerging Cross-Sectional Technologies | 4 | Active |
| US10351937B2 | High-strength steel sheet excellent in impact resistance and manufacturing method thereof, and high-strength galvanized steel sheet and manufacturing method thereof | Emerging Cross-Sectional Technologies | 4 | Active |
| USRE43138E1 | Mobile communication system enabling efficient use of small-zone base stations | General | 4 | Active |
| US10297874B2 | Method of manufacturing all-solid-state battery | Emerging Cross-Sectional Technologies | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.