Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11886649 | Optical navigation device | Sai Mun Lee, Hun Kwang Lee | 2024-01-30 |
| 9383229 | Optical reflective encoder with multi-faceted flat-faced lens | Wee Jin Yeap | 2016-07-05 |
| 8232966 | Multiple input optical navigation system | Chiang Sun Cheah, Ak Wing Leong | 2012-07-31 |
| 8193483 | Optical encoder systems, devices and methods | Weng Fei Wong, Wee Jin Yeap, Cheng Kwong Cheang | 2012-06-05 |
| 8063355 | Reflective multi-turn encoders with different light sensing systems | Sze Kuang Lee, Weng Fei Wong | 2011-11-22 |
| 7845556 | Optical encoder with contamination detection | Jiin Cheang Cheong | 2010-12-07 |
| 7795576 | Single dome lens reflective optical encoder | Weng Fei Wong, Wee Jin Yeap, Cheng Kwong Cheang | 2010-09-14 |
| 7780258 | Media sensor with polarization filter | Siang Leong Foo | 2010-08-24 |
| 7732755 | Absolute encoder utilizing light of different wavelengths to reduce cross talk | Kean Foong Ng | 2010-06-08 |
| 7667189 | Optical encoder apparatus for removable connection with printed circuit board and methods of assembling optical encoder | Prekumar S. Ramachandran, Saiful Bahari Saldan | 2010-02-23 |
| 7622707 | Polaroid absolute encoder | Kee Siang Goh, Chee-Keong Chong | 2009-11-24 |
| 7544924 | Directional input device with a light directing shaft | Siang Leong Foo, Boon Keat Tan | 2009-06-09 |
| 7495583 | Flat-top reflection-based optical encoders | Teong Tan, Premkumar S. Ramachandr, Cheng Why Tan, Weng Fei Wong | 2009-02-24 |
| 7490771 | Reflective encoder with interchangable lens on emitter-detector module | Cheng Why Tan | 2009-02-17 |
| 7465917 | Absolute encoder utilizing light of different wavelengths to reduce cross-talk | Kean Foong Ng | 2008-12-16 |
| 7462815 | Absolute encoder utilizing a code pattern carrier having a varying mixture of phosphors deposited thereon | Janet Bee Yin Chua | 2008-12-09 |
| 7439487 | Optical encoder apparatus for removable connection with a printed circuit board and methods of assembling optical encoder apparatus. | Premkumar S. Ramachandran, Saifulbahari Saidan | 2008-10-21 |
| 7385178 | Reflective encoders with various emitter-detector configurations | Siang Leong Foo, Weng Fei Wong, Saiful Saidan, Cheng Why Tan, Wee Jin Yeap | 2008-06-10 |
| 7317183 | High performance reflectivity optical encoder with a protrusion between lenses | Weng Fei Wong, Siang Leong Foo | 2008-01-08 |
| 7304294 | Reflective encoder with reduced background noise | — | 2007-12-04 |
| 7279674 | Optical encoder module | Kee Yean Ng, Kok Fo, Chee-Keong Chong, Chin Lee | 2007-10-09 |
| 7265336 | Encoder utilizing a reflective cylindrical surface | Toshiya Hataguchi, Kok Fo, Srinivasan Lakshmanan, Lai Hing Chua | 2007-09-04 |
| 7182258 | Enhanced reflective optical encoder | Siang Leong Foo, Weng Fei Wong | 2007-02-27 |
| 7180430 | Low-cost absolute linear optical encoder | Kean Foong Ng, Hock Aun Tan, Moon Leong Low | 2007-02-20 |
| 7145127 | Optical encoding that utilizes total internal reflection | Siang Leong Foo, Chee-Keong Chong | 2006-12-05 |