| Class 329 | DEMODULATORS |
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![[List of Pre Grant Publications for class 329 subclass 300]](../as.gif) | ![[List of Patents for class 329 subclass 300]](../ps.gif) | 300 | FREQUENCY SHIFT KEYING OR MINIMUM SHIFT KEYING DEMODULATOR |
| | 301 |  Including discrete semiconductor device |
| | 302 | Input signal combined with local oscillator or carrier frequency signal |
| | 303 | Including logic element (e.g., logic gate or flip-flop |
| | 304 | PHASE SHIFT KEYING OR QUADRATURE AMPLITUDE DEMODULATOR |
| | 305 | Including discrete semiconductor device |
| | 306 | Input signal combined with local oscillator or carrier frequency signal |
| | 310 | Including logic element (e.g., logic gate or flip-flop) |
| | 311 | PULSE OR INTERRUPTED CONTINUOUS WAVE DEMODULATOR |
| | 315 | FREQUENCY MODULATION DEMODULATOR |
| | 316 | Plural demodulation |
| | 318 | Having specific distortion, noise or other interference prevention, reduction or compensation |
| | 319 |  Using feedback to reduce distortion, noise or other interference |
| | 320 | By cancelling distortion, noise or other interference |
| | 321 | Using amplitude limiting within the demodulator |
| | 322 | Including microwave or distributed parameter structure |
| | 323 | Input signal combined with local oscillator or carrier frequency signal |
| | 327 | Input signal split into plural signals |
| | 328 | Including piezoelectric resonant element |
| | 329 | Using a transformer to split input signal |
| | 330 |  Signals taken from primary and secondary windings |
| | 332 | Signals taken from plural secondary windings |
| | 335 | Including plural detector diodes (e.g., ratio detector type) |
| | 336 | Input signal combined with phase shifted or delayed portion of input signal |
| | 338 | Input signal split by LC resonant circuit |
| | 340 | Including plural detector diodes (e.g., ratio detector type) |
| | 341 | Input signal converted to and processed in pulse form (e.g., pulse counter or digital type demodulator) |
| | 344 | Including signal passed through single demodulating path including resonant circuit |
| | 345 | PHASE MODULATION DEMODULATOR |
| | 347 | AMPLITUDE MODULATION DEMODULATOR |
| | 348 | Having plural demodulation outputs |
| | 349 | Having specific distortion, noise or other interference prevention, reduction or compensation |
| | 350 | Automatic amplitude stabilization or control |
| | 351 | Nonlinearity reduction or compensation |
| | 352 | Temperature compensation |
| | 353 | Noise reduction or compensation |
| | 354 | Including microwave or distributed parameter structure |
| | 356 | Suppressed carrier double sideband type |
| | 357 | Single or vestigial sideband type |
| | 358 | Input signal combined with local oscillator or carrier frequency signal (e.g., synchronous demodulator) |
| | 359 | Input signal applied directly to local oscillator |
| | 360 | Including phase or frequency locked loop |
| | 361 | Including sampling, gating, or switching |
| | 363 | Input signal split into plural signals |
| | 364 | Including three or more terminal discrete semiconductor device |
| | 365 | Including diode demodulator device |
| | 367 | Including regenerative feedback in non-oscillating demodulator |
| | 368 | Electron discharge demodulator device having more than two electrodes (e.g., triode, tetrode etc.) |
| | 369 | Including three or more terminal discrete semiconductor demodulator device |
| | 370 | Including diode demodulator device |
| | 371 | Coherer type demodulator |
| | 372 | MISCELLANEOUS |
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| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |