Inventor · Herzogenrath, DE

Ralph Bertram

23Patents
4h-index
33Co-inventors
59Inventor score

Filing activity: Feb 27, 2008 → Dec 11, 2018

Most-cited inventions

PatentTitleAreaCited byStatus
USD600368S1 LED lamp General 124 Expired
USD600367S1 Lamp General 84 Expired
US8480252B2 Illumination device Mechanical Engineering; Lighting; Heating 29 Active
US9541274B2 Illumination module and illumination device comprising a flexible carrier Electricity 18 Active
US8619211B2 Lighting device, backlighting device, and display device Electricity 4 Active
US7993022B2 Illuminating module for a lighting device Physics 4 Active
US8292458B2 Light emitting diode lamp comprising one LED consuming a first electrical power and one radiation-emitting semiconductor component consuming an electrical dissipation power Mechanical Engineering; Lighting; Heating 3 Active
US7862205B2 Lighting unit and lamp Emerging Cross-Sectional Technologies 2 Active
US8604702B2 Method and apparatus for setting a chromaticity coordinate Electricity 2 Active
US8851716B2 Lamp incorporating a heat sink and an optically transmissive cover Mechanical Engineering; Lighting; Heating 2 Active
US8439532B2 Lighting device to be installed in a panel Mechanical Engineering; Lighting; Heating 2 Active
US8427062B2 Illumination device and method for adapting an emission characteristic of an illumination device Electricity 1 Active
US9115852B2 Method for producing a plurality of LED illumination devices and a plurality of LED chipsets for illumination devices, and LED illumination device Electricity 1 Active
US9097392B2 Mixed light source Electricity 1 Active
US7796392B2 Electronic construction unit and electrical circuit carrier Electricity 1 Active
US11476384B2 Planar semiconductor light source comprising downstream optical element Electricity 0 Active
US11158611B2 LED filament Electricity 0 Active
US11616175B2 Luminophore mixture, conversion element and optoelectronic component Electricity 0 Active
US9429308B2 Illumination module and illumination device comprising a flexible carrier General 0 Revoked
US11611022B2 Phosphor mixture, conversion element and optoelectronic component Electricity 0 Active
US8581478B2 Cooling member for semiconductor light emitting elements Mechanical Engineering; Lighting; Heating 0 Active
US8593446B2 Method and arrangement for adjusting a color location, and illumination system Electricity 0 Active
US9546778B2 LED module with protective film Mechanical Engineering; Lighting; Heating 0 Active

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