Yang Dan's patent

Including the applied and published U.S. patent: Pat. No.13,684,424 computerized teaching diagnostic tool Pat. No.13,726,311PAT, a computer-aided learning structure for very young children. No. 13,164,982 Method for recording and determining children's development by using software applications for mobile devices. No.13,091354 Multi-purpose educational and entertainment device for teenagers. PatentNo.12,908,390 is a method and system for software game application based on touch screen for baby users (under examination). No.12,908,390 Interactive game for infants based on touch screen (under inspection). No.29,381,3 13 (allowed, unpublished) patents for handles of touch-screen computing devices. 6,198,571multi-channel optical network computerized intelligent optical amplifier PAT. Patent No.6,104,527 for Shi Ying fiber amplifier with double bandwidth and flat gain. Patent No.6,091743 for low coherence optical fiber light source with broadened bandwidth and enhanced power. Simple control and management method of reconfigurable optical fiber equipment. Patent No.7,068,423, low cost, flexible and automatic optical power management. Patent No.6,823,219 general optical control management platform PAT. 6,804,464 is used for flexible and low-cost wavelength management of optical networks. No 6,697, 190: flexible and fast electronic control of optical devices. Jumper box no 6,484,958. No.6,215,584 input independent active gain flat broadband amplifier PAT without tilt. No.6,172,995 high-power broadband light source with stable and balanced spectrum output.