Patent 低雑音増幅器 山口陽, 加保貴奈, 山田貴之, 芝宏礼, 中川匡夫, 上原一浩 Application no. 特願2014-113046 Date applied May 30, 2014 Announcement no. 特開2015-228572 Date announced Dec 17, 2015 Patent/Registration no. 特許5719467 Date registered Mar 27, 2015 Date issued