Patent contributions of Mr. Zhang, the chief designer of Blaudio:

a.  authorized Patents in china

1  White panel microwave absorber       93236640                                         2  five-star split type strong NdFeB magnet system     94213628.4

3  "Chinese  duct" type super-bass speaker     96234720                              4  Auto air-flow cooling NdFeB magnet system      97240482.1

5  cone paper of speaker with special damping   97246096.9                      6  speaker box with true sandwich structure      97240567.4

7  a super-bass speaker with inner sound-waveguide  97240566.6              8 Magnetic adsorption grill of loudspeaker           97246095.0

9  Vibration system of panel electrodynamic speaker 200610122444.8     10 Textile Ribbons Diaphragm speaker CN 1925694B

11  A direct drive dome loudspeaker CN 101374370 B

b. declared patents in china

1. a drive system of speaker   200610122443.3

2. a improved Vibration system of panel electrodynamic speaker  200710029826.0  

3. Vibration board with spiral-grooved reinforcing structure 201110257045.3

4. Aluminum Ribbons loudspeaker  201210388040.9

5. Stress-sensitive transformer core with protective box and No-stress Fixation method of the core   201210388458.X 

6. Film Short-circuit ring of Electromagnetic driver   201310091400.3 

c. authorized Patents in abroad

1  US 8,144,916 B2

2  EP 2071868

3  PCT/CN2007/002827