特許権 Software updating apparatus, software updating system, alteration verification method and alteration verification program Manabu Maeda, Yuichi Futa, Natsume Matsuzaki, Kaoru Yokota, Masao Nonaka, Yuji Unagami, Hiroki Shizuya, Shingo Hasegawa, Marika Minagawa, Masao Sakai, Shuji Isobe, Eisuke Koizumi 出願番号 WO2009118800A1, EP2259205B1, JP4932033B2, US8464347B2 出願日 2008年