YY

Yoshikazu Yokoyama

HC Hitachi Koki Co.: 7 patents #164 of 888Top 20%
KC Koki Holdings Co.: 3 patents #64 of 215Top 30%
📍 Hitachinaka, JP: #494 of 2,447 inventorsTop 25%
Overall (All Time): #488,488 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
12030129 Working machine Ryosuke NAKANO, Ken INUI 2024-07-09
11926011 Powered tool Ryosuke NAKANO 2024-03-12
11780071 Power tool Yasutaka Shimizu, Naoki Tadokoro, Ryosuke NAKANO 2023-10-10
9144923 Portable cutting machine Yasuoki Kawahata 2015-09-29
8984710 Blower apparatus and an air conveying apparatus 2015-03-24
D638035 Engine blower Shingo Kosugi, Masanori Okada, Shinichi Kakefuda, Jun KUGENUMA 2011-05-17
D591916 Engine blower Shingo Kosugi, Masato Sakai, Shinichi Kakefuda, Tomoyuki Kawahara, Takahiro Hirai 2009-05-05
6909207 Electric tool and its insulating method Tomoya Ikeda, Nobuhito Hosokawa 2005-06-21
6863135 Electric power tool Junichi Kamimura, Mitsuo Ogura, Mitsuyuki Ishikawa, Yoshimitsu Kawasaki, Juurou Kobayashi +4 more 2005-03-08
6619410 Electric power tool Junichi Kamimura, Mitsuo Ogura, Mitsuyuki Ishikawa, Yoshimitsu Kawasaki, Juurou Kobayashi +4 more 2003-09-16