Learn more

QSI CO LTD

Overview
  • Total Patents
    17
  • GoodIP Patent Rank
    199,324
About

QSI CO LTD has a total of 17 patent applications. Its first patent ever was published in 2001. It filed its patents most often in Republic of Korea. Its main competitors in its focus markets optics and semiconductors are JOHNSON RALPH H, UNION OPTRONICS CORP and BANDWIDTH9 INC.

Patent filings in countries

World map showing QSI CO LTDs patent filings in countries
# Country Total Patents
#1 Republic of Korea 17

Patent filings per year

Chart showing QSI CO LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Semiconductors

Top inventors

# Name Total Patents
#1 Kim Tae Kyung 5
#2 Choi An Sik 5
#3 Kim Taekyung 4
#4 Lee Sang Don 3
#5 Hwang Son Kyo 2
#6 Oh Myeong Seok 2
#7 Kim Won Ho 2
#8 Seong Yeong Un 2
#9 Jeong Geun Kwak 2
#10 Cho Byung Mo 1

Latest patents

Publication Filing date Title
KR20200138135A Semiconductor laser diode device and manufacturing method
KR20200118585A High power laser module manufacturing method using laser soldering bonding technique
KR20200110915A Semiconductor laser diode device and manufacturing method
KR20200025426A Laser diode package with beam path direction changed for to can type
KR20140112926A Lead frame type laser diode module with submount type photodiode
KR20130104363A Laser diode structure and manufacturing method thereof
KR20130010678A Time constant decreasing method of driving circuit for driving laser diode or avalanche photodiode and driving circuit thereof
KR20110014260A Laser diode structure
KR20100129012A Laser diode structure and manufacturing method thereof
KR20100118273A Laser diode structure and manufacturing method thereof
KR20090112425A Semiconductor laser device and manufacturing process thereof
KR20080076427A Multi beam lazer diode and manufacturing method thereof
KR100854282B1 Lazer diode bar and manufacturing method thereof
KR20070044138A Semiconductor lazer device and manufacturing method thereof
KR20070044137A Semiconductor laser device and manufacturing method thereof
KR20020090746A laser diode and manufacturing method thereof
KR20020090745A laser diode and manufacturing method thereof