A. Korpel -- U.S. Patents

1. 3,252,159 Wave Signal Apparatus Responsive to Phase Pattern Information
   
   
2. 3,296,537 Superregenerative Oscillating Detector Circuit
   
   
3. 3,383,631 Acoustic Impedance Matching
   
   
4. 3,424,906 Light-Sound Interaction System with Acoustic Beam Steering
   
   
5. 3,506,334 Phased-Array Type Beam Scanning
   
   
6. 3,506,928 Radiation Scanning Apparatus
   
   
7. 3,514,534 Wide Aperture Laser Beam Modulating and Scanning System
   
   
8. 3,488,437 Video Display Systems
   
   
9. 3,488,438 Display Systems Utilizing Bragg Diffraction
   
   
10. 3,515,458 Radiation Scanning System
    
    
11. 3,524,011 Laser Color Display Utilizing Acoustical Light Modulators
    
    
12. 3,534,166 Television Picture Recording and Replay System
    
    
13. 3,544,795 Electro-Optical Signal Transfer Apparatus
    
    
14. 3,551,690 Wave Generator
    
    
15. 3,571,507 Optical Apparatus for Developing Display Information Signals of Frequency Multiplex Character
    
    
16. 3,575,550 Optical Apparatus for Developing a Frequency Domain Signal
    
    
17. 3,585,392 Phase Modulated Light Detection
    
    
18. 3,585,848 Method and Apparatus for Recording Acoustic Images and Holograms
    
    
19. 3,590,157 Laser Display System Having Wide Deflection Angle
    
    
20. 3,614,310 Electro Optical Apparatus Employing a Hollow Beam for Translating an Image of an Object
    
    
21. 3,636,248 Acoustical Holography by Samping a Sound Field in Bulk
    
    
22. 3,651,262 Laser System for Magnetic Recording and Playback
    
    
23. 3,670,098 Optical Scanning Apparatus
    
    
24. 3,700,903 Optical Detecting Systems for Sensing Variations in the Lateral Motion of Light Rays (with R. Adler)
    
    
25. 3,706,965 Real-Time Acoustic Imaging System
    
    
26. 3,716,659 Frequency Domain Image Processing Apparatus
    
    
27. 3,744,039 Single Laser Simultaneous Multiple Channel Character Generation System
    
    
28. 3,745,812 Acoustic Imaging Apparatus
    
    
29. 3,790,281 Combined System for Acoustical-Optical Microscopy (with L.W. Kessler)
    
    
30. 3,794,975 System for Translating Sound-Borne Character or Pattern Information into Optical Form
    
    
31. 3,860,752 Virtual Image Display System with Stereo and Multi-Channel Capacity (with R. Adler)
    
    
32. 3,890,829 Method and Apparatus for Acoustical Imaging (with R.L. Whitman)
    
    
33. 3,737,785 Solid State Signal Distribution System
    
    
34. 3,92l,459 Video Disc (1/4lpits)
    
    
35. 3,988,532 Arrangement for Compensating Duty Factor Variations in an Optical Video Disc
    
    
36. 4,097,730 Focus Correction System for Video Disc Player
    
    
37. 4,193,090 Optical Detection System for Simultaneously Interrogating a Plurality of Tracks