HOETRON INC has a total of 11 patent applications. Its first patent ever was published in 1990. It filed its patents most often in United States, Japan and EPO (European Patent Office). Its main competitors in its focus markets audio-visual technology, optics and semiconductors are LASER MAGNETIC STORAGE INT, NAGATOMI KENJI and EKISUPAATO MAGNETICS KK.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 5 | |
#2 | Japan | 4 | |
#3 | EPO (European Patent Office) | 2 |
# | Industry | |
---|---|---|
#1 | Audio-visual technology | |
#2 | Optics | |
#3 | Semiconductors |
# | Technology | |
---|---|---|
#1 | Special information storage | |
#2 | Devices using light amplification | |
#3 | Semiconductor devices | |
#4 | Optical systems |
# | Name | Total Patents |
---|---|---|
#1 | Lee Wai-Hon | 11 |
Publication | Filing date | Title |
---|---|---|
US6043935A | Wavelength sensitive beam combiner with aberration correction | |
US6188062B1 | Laser/detector hybrid with integrated mirror and diffracted returned beam | |
EP0860819A2 | Optical pickup using two semiconductor lasers with different wavelengths | |
US5991249A | Optical track sensing device | |
US5285062A | Laser/detector hybrid with mirror source and diffracted return beam | |
US5136152A | Hybrid optical pickup with integrated power emission and reading photodetectors |