LexDanaLexDanabeta
Inventor

Chan-hee Choi

Inventor
Seoul, KR

Overview

2→
Patents
1997–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

C21Dprimary
C21DModifying the physical structure of ferrous metals33%
C22CAlloys33%
G10LSpeech analysis techniques or speech synthesis33%
PatentTitleYear
11,011,172Electronic device and voice recognition method thereof20215,634,990'Fe-Mn vibration damping alloy steel and a method for making the same'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997Patents assigned to WOOJIN OSK CORP (1)· patent assignee history
1997–2021Based in Seoul, KR· patent location history
2021Patents assigned to SAMSUNG ELECTRONICS CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SAMSUNG ELECTRONICS CO LTD12021
WOOJIN OSK CORP11997
Locations
LocationPatentsSpan
Seoul, KR21997–2021