Inventor

Ryuichi Oka

Inventor
Ibaraki, JP

Overview

5→
Patents
1990–2020
Patent span
Physics
Primary field (CPC G)

Patents· 5 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G10Lprimary
G10LSpeech analysis techniques or speech synthesis29%
G01CMeasuring distances, levels or bearings14%
G06FElectric digital data processing14%
G06KGraphical data reading14%
G06TImage data processing or generation, in general14%
G06VImage or video recognition or understanding14%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to AGENCY IND SCIENCE TECHN (1)· patent assignee history
1990–1998Based in Ibaraki, JP· patent location history
1998Patents assigned to REAL WORLD COMPUTING PARTNERSH (2)· patent assignee history
1998Patents assigned to SHARP KK (2)· patent assignee history
1998Patents assigned to HITACHI LTD (1)· patent assignee history
1998Patents assigned to JAPAN IRON & STEEL FED (1)· patent assignee history
1998Based in Tsukuba, JP· patent location history
2017Based in Chiba, JP· patent location history
2020Based in Aizuwakamatsu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
REAL WORLD COMPUTING PARTNERSH21998
SHARP KK21998
AGENCY IND SCIENCE TECHN11990
HITACHI LTD11998
JAPAN IRON & STEEL FED11998
Locations
LocationPatentsSpan
Ibaraki, JP21990–1998
Aizuwakamatsu, JP12020
Chiba, JP12017
Tsukuba, JP11998