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III-Nitrides 2012-2013 Patent Landscape

  • May 2013
  • -
  • KnowMade
  • -
  • 59 pages


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Group III nitride semiconductors are recognized as having great potential for short wave length emission (LEDs, LDs, UV detectors) and high-temperature electronics devices. The field of III-N semiconductors has shown an intensive patenting activity since early 1990s, with a substantial increase during the past decade. Today, there are more than 27,000 patent families filed all over the world. The most active companies are Panasonic, Toshiba, Samsung, Sumitomo and Hitachi. The patents related to LED technology account for more than 40% of filings, followed by those related to GaN substrates (<20%), Power Devices (<15%), Epi-wafers (<10%), Laser (>5%) and RF & Advanced Electronics (<5%).

More than 1,570 new patent families were published between early April 2012 and late March 2013. They were filed by about 350 patent applicants mainly located in Japan, Korea, USA and China. The main patent applicants are Sumitomo, Toshiba, Samsung, Sharp and Mitsubishi which represent together almost 25% of the patents published the last 12 months. The academic organisms account for almost 15% of new patent filings and they are mainly located in China. The data set was segmented by type of application (Substrates, Epi-wafers, LED & Laser, Power Devices, RF & Advanced Electronics, Photovoltaics, Sensors-Detectors-MEMS). About 45% of new patent families published the last 12 months are related to LED technology. They were mainly filed by Toshiba, LG and Samsung, while Chinese companies are increasing their patent activity (Tongfang, Sanan Optoelectronics). The patents claiming an invention related to III-N Substrates and Power Devices represent 20% and 14% of new filings respectively. The patents dedicated to Substrate technology were mainly filed by Sumitomo, Hitachi and Mitsubishi, while University of California and Soitec filed 15 and 8 new patents respectively. The patents dedicated to Power Devices were mainly filed by Advanced Power Device Research Association, Samsung and Sumitomo, and the patent filings remain dominated by Japanese companies. Numerous patent applications published this year are offered for sale or for license. This year, the most relevant offers are the ones from the University of California (e.g. Ammonothermal growth technique, CAVET for High Power Application, Defect reduction of semi-polar III-N, GaN substrates, III-N tandem solar cells …).

This report also provides an Excel database of all the relevant patents KnowMade has analyzed, allowing for multi-criteria searching:

Patent information
- Patent publication number
- Hyperlink to original documents
- Oldest priority date
- Title
- Abstract
- Applicants

Technological segments
- Laser
- Power
- RF & Advanced Electronics
- Substrate
- Photovoltaic
- Sensor-Detector-MEMS
- Epi-wafer

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