Inventor · Tokushima, JP

Ryohei Yamashita

54Patents
4h-index
37Co-inventors
66Inventor score

Filing activity: Apr 11, 2003 → Aug 25, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US7710016B2 Light emitting device provided with lens for controlling light distribution characteristic Electricity 35 Active
US8558446B2 Light emitting device provided with lens for controlling light distribution characteristic Electricity 14 Active
US6973911B2 Method and device for controlling ignition timing of ignition device for internal combustion engine Emerging Cross-Sectional Technologies 7 Expired
US9117806B2 Light emitting device mount, light emitting apparatus including the same, and leadframe Electricity 6 Active
US9287480B2 Light emitting device mount and light emitting apparatus Electricity 3 Active
US10768353B2 Method of manufacturing light emitting module and light emitting module Electricity 3 Active
US10364550B2 Hydraulic drive system of work machine Mechanical Engineering; Lighting; Heating 2 Active
US10115876B2 Light emitting device mount, leadframe, and light emitting apparatus Electricity 2 Active
US10472804B2 Hydraulic control system of construction machine Mechanical Engineering; Lighting; Heating 2 Active
US10309079B2 Hydraulic control system for work machine Mechanical Engineering; Lighting; Heating 2 Active
US10069056B2 Light emitting device Electricity 2 Active
US10330128B2 Hydraulic control system for work machine Mechanical Engineering; Lighting; Heating 2 Active
US7108399B2 Light source unit Electricity 2 Expired
US9812627B2 Light emitting device Electricity 2 Active
US7479665B2 Side-view type light emitting device Emerging Cross-Sectional Technologies 2 Active
US9691689B2 Lead frame for mounting semiconductor element and method for manufacturing the same Electricity 2 Active
US11106082B2 Light-emitting module and surface-emitting light source Electricity 2 Active
US9461207B2 Light emitting device, and package array for light emitting device Electricity 2 Active
US11415741B2 Surface light source Physics 1 Active
US11380826B2 Light emitting module Electricity 1 Active
US11508881B2 Light emitting module and method of manufacturing the same Electricity 1 Active
US11506934B2 Light-emitting device and planar light source Electricity 1 Active
US10400426B2 Hydraulic control system for construction machine Mechanical Engineering; Lighting; Heating 1 Active
US10060450B2 Hydraulic control device for work machine Mechanical Engineering; Lighting; Heating 1 Active
US10884290B2 Light emittng module Physics 1 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.