Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 342/28
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Presence detection only > By motion detection
Description: Subject matter wherein the presence of a target is detected by sensing target movement.










Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
3990081 Doppler radar device Nov. 2, 1976
3987427 Doppler detection device with phase shift means to inhibit false alarms Oct. 19, 1976
3986182 Multi-zone intrusion detection system Oct. 12, 1976
3967283 Large area motion sensor Jun. 29, 1976
3964063 Traffic-surveillance system Jun. 15, 1976
3947834 Doppler perimeter intrusion alarm system using a leaky waveguide Mar. 30, 1976
3943513 System and method for selecting Doppler altered reflected signals Mar. 9, 1976
3942178 Intrusion detection system Mar. 2, 1976
3932871 FM/CW surveillance radar system with range gating Jan. 13, 1976

1 2 3 4 5 6 7 8










 
 
  Recently Added Patents
Non-volatile memory and method having efficient on-chip block-copying with controlled error rate
Personalized health communication system
Three-dimensional filter
Catecholic butanes and use thereof for cancer therapy
Accelerator for a read-channel design and simulation tool
Pet carrier
Inhibitors of human immunodeficiency virus replication
  Randomly Featured Patents
Process for spinning modified synthetic fibers
Variable speed three-phase motor
Protective coatings for turbine combustion components
Root canal filling device including releasably reusable inserter tool
Red light implant for treating degenerative disc disease
Methods for selecting primers
Method and system for crimping a metal connector
Defect monitor for semiconductor manufacturing capable of performing analog resistance measurements
Method and system of image segmentation using regression clustering
Bioactive agent release coating