KOYAMA YUJI has a total of 16 patent applications. Its first patent ever was published in 1984. It filed its patents most often in Japan, United States and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets optics, semiconductors and basic materials chemistry are O FLEX CO LTD, INNOX ADVANCED MAT CO LTD and YANTAI DEBANG ADVANCED SILICON MATERIALS CO LTD.
# | Country | Total Patents | |
---|---|---|---|
#1 | Japan | 9 | |
#2 | United States | 5 | |
#3 | WIPO (World Intellectual Property Organization) | 2 |
# | Industry | |
---|---|---|
#1 | Optics | |
#2 | Semiconductors | |
#3 | Basic materials chemistry | |
#4 | Macromolecular chemistry and polymers | |
#5 | Machines | |
#6 | Control | |
#7 | Civil engineering |
# | Technology | |
---|---|---|
#1 | Semiconductor devices | |
#2 | Unspecified technologies | |
#3 | Optical systems | |
#4 | Nonlinear optics | |
#5 | Adhesives | |
#6 | Special macromolecular compounds | |
#7 | Locks | |
#8 | Registering devices | |
#9 | Special macromolecular compounds | |
#10 | Coating compositions |
# | Name | Total Patents |
---|---|---|
#1 | Koyama Yuji | 16 |
#2 | An Mingxing | 2 |
Publication | Filing date | Title |
---|---|---|
WO2012029186A1 | Electric lock and electronic lock system using same | |
WO2010143517A1 | Electronic lock system that supports media on which non-contact ic chips are mounted and method of attesting third parties and of releasing locks | |
JP2007009690A | Wooden floor structure of apartment block | |
JP2004332340A | Wooden floor structure of apartment and its construction method | |
JP2003213808A | Highly functional handrail and ventilator | |
JP2001170133A | Moxibustion plate, method for manufacturing of the same and holding tool of moxibustion plate | |
JP2001020627A | Manufacture of wooden door and wooden door manufacturing kit | |
JPH1046928A | Wooden door element piece and wooden door using it | |
JPH08164091A | Device for lifting up toilet seat in toilet bowl | |
JPH082385A | Wiper device for vehicle | |
JPS6194656A | Moxibustion table |