| Class Number |
Class Name |
No. of Patents |
| 329/347 |
Amplitude modulation demodulator |
64 |
| 329/371 |
Coherer type demodulator |
3 |
| 329/368 |
Electron discharge demodulator device having more than two electrodes (e.g., triode, tetrode etc.) |
1 |
| 329/348 |
Having plural demodulation outputs |
35 |
| 329/349 |
Having specific distortion, noise or other interference prevention, reduction or compensation |
54 |
| 329/350 |
Automatic amplitude stabilization or control |
23 |
| 329/353 |
Noise reduction or compensation |
20 |
| 329/351 |
Nonlinearity reduction or compensation |
11 |
| 329/352 |
Temperature compensation |
9 |
| 329/370 |
Including diode demodulator device |
24 |
| 329/354 |
Including microwave or distributed parameter structure |
15 |
| 329/355 |
With electron discharge device |
0 |
| 329/367 |
Including regenerative feedback in non-oscillating demodulator |
1 |
| 329/369 |
Including three or more terminal discrete semiconductor demodulator device |
24 |
| 329/358 |
Input signal combined with local oscillator or carrier frequency signal (e.g., synchronous demodulator) |
51 |
| 329/360 |
Including phase or frequency locked loop |
77 |
| 329/361 |
Including sampling, gating, or switching |
45 |
| 329/362 |
With three or more terminal discrete semiconductor device |
19 |
| 329/359 |
Input signal applied directly to local oscillator |
11 |
| 329/363 |
Input signal split into plural signals |
27 |
| 329/365 |
Including diode demodulator device |
5 |
| 329/366 |
Plural diodes |
15 |
| 329/364 |
Including three or more terminal discrete semiconductor device |
16 |
| 329/357 |
Single or vestigial sideband type |
51 |
| 329/356 |
Suppressed carrier double sideband type |
22 |
| 329/315 |
Frequency modulation demodulator |
65 |
| 329/318 |
Having specific distortion, noise or other interference prevention, reduction or compensation |
106 |
| 329/320 |
By cancelling distortion, noise or other interference |
48 |
| 329/321 |
Using amplitude limiting within the demodulator |
37 |
| 329/319 |
Using feedback to reduce distortion, noise or other interference |
61 |
| 329/322 |
Including microwave or distributed parameter structure |
14 |
| 329/344 |
Including signal passed through single demodulating path including resonant circuit |
5 |
| 329/323 |
Input signal combined with local oscillator or carrier frequency signal |
61 |
| 329/325 |
Including phase or frequency locked loop |
165 |
| 329/326 |
Including discrete semiconductor device |
33 |
| 329/324 |
Input signal applied directly to local oscillator |
18 |
| 329/341 |
Input signal converted to and processed in pulse form (e.g., pulse counter or digital type demodulator) |
86 |
| 329/343 |
Including digital logic circuitry |
68 |
| 329/342 |
Including discrete semiconductor device |
21 |
| 329/327 |
Input signal split into plural signals |
58 |
| 329/328 |
Including piezoelectric resonant element |
15 |
| 329/340 |
Including plural detector diodes (e.g., ratio detector type) |
15 |
| 329/336 |
Input signal combined with phase shifted or delayed portion of input signal |
92 |
| 329/337 |
Including lc resonant phase shift circuit |
52 |
| 329/338 |
Input signal split by lc resonant circuit |
0 |
| 329/339 |
Including lc resonant circuits tuned above and below input signal carrier frequency |
4 |
| 329/329 |
Using a transformer to split input signal |
3 |
| 329/335 |
Including plural detector diodes (e.g., ratio detector type) |
4 |
| 329/332 |
Signals taken from plural secondary windings |
0 |
| 329/333 |
Including plural detector diodes (e.g., ratio detector type) |
4 |
| 329/334 |
Including resonant circuits tuned above and below input signal carrier frequency |
2 |
| 329/330 |
Signals taken from primary and secondary windings |
2 |
| 329/331 |
Including plural detector diodes (e.g., ratio detector type) |
1 |
| 329/316 |
Plural demodulation |
64 |
| 329/317 |
Including amplitude demodulation |
35 |
| 329/300 |
Frequency shift keying or minimum shift keying demodulator |
188 |
| 329/301 |
Including discrete semiconductor device |
16 |
| 329/303 |
Including logic element (e.g., logic gate or flip-flop |
94 |
| 329/302 |
Input signal combined with local oscillator or carrier frequency signal |
129 |
| 329/372 |
Miscellaneous |
9 |
| 329/345 |
Phase modulation demodulator |
71 |
| 329/346 |
Input signal combined with local oscillator or carrier frequency signal |
79 |
| 329/304 |
Phase shift keying or quadrature amplitude demodulator |
506 |
| 329/305 |
Including discrete semiconductor device |
27 |
| 329/310 |
Including logic element (e.g., logic gate or flip-flop) |
123 |
| 329/306 |
Input signal combined with local oscillator or carrier frequency signal |
216 |
| 329/307 |
Including phase or frequency locked loop |
171 |
| 329/308 |
With parallel signal combiners (e.g., costas loop) |
141 |
| 329/309 |
Including logic element (e.g., logic gate or flip-flop) |
67 |
| 329/311 |
Pulse or interrupted continuous wave demodulator |
109 |
| 329/313 |
Pulse position, frequency, phase or spacing demodulator |
70 |
| 329/314 |
Including discrete semiconductor device |
9 |
| 329/312 |
Pulse width demodulator |
58 |
