Ryuichi Watanabe has been granted 11 US patents while listed as an inventor at Sony . The first was granted in 1996 and the most recent in December 2025. Ryuichi Watanabe ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Ryuichi Watanabe in Zushi, JP.
Patents per Year Patents granted per year, 1996 to 2017 Bar chart with a peak of 4 patents in 2002. peak 4 1996: 1 patents 1996 1997: 1 patents 1997 2001: 1 patents 2001 2002: 4 patents 2002 2006: 1 patents 2006 2017: 1 patents 2017 Issued Patents All Time
Showing 1–11 of 11 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12499344 Method of executing classification process using machine learning model, information processing device, and non-transitory computer-readable medium storing computer program HIROMI KURASAWA 2025-12-16
12449350 Determination method HIROMI KURASAWA , Yoshihiro Oshita , Masashi Kanai 2025-10-21
9704668 Input device Hajime Osako , Yoshiyuki Tagawa 2017-07-11
7075558 Digital map display zooming method, digital map display zooming device, and storage medium for storing digital map display zooming program Masafumi Minami , Hiroto Narioka 2006-07-11
$698,000
6424355 Digital map display zooming method, digital map display zooming device, and storage medium for storing digital map display zooming program Masafumi Minami 2002-07-23
$897,000
6411274 Digital map display zooming method, digital map display zooming device, and storage medium for storing digital map display zooming program Masafumi Minami , Hiroto Narioka 2002-06-25
$624,000
6401030 Information processing apparatus and method, and program storage medium Takashi Kuwayama 2002-06-04
$847,000
6396498 Information processing apparatus and method, and providing medium — 2002-05-28
$1,248,000
6285347 Digital map display scrolling method, digital map display scrolling device, and storage device for storing digital map display scrolling program Masafumi Minami 2001-09-04
$741,000
5608565 Bidirectional optical transmission system Yasuhiro Suzuki , Kiyomi Kumozaki 1997-03-04
$571,000
5539564 Point-to-multipoint optical transmission system Kiyomi Kumozaki , Seiichi Yamano , Noriki Miki , Shinichi Aoyagi , Yasuyuki Okumura +1 more 1996-07-23
$295,000
