Patents

1. “Method and System for Use in Optical Code Division Multiple Access (OCDMA)”, A.A. Friesem, A. Pe’er, D. Barak and Y. Silberberg, PCT – PCT/IL04/00328 Patent Pending, April 2004.

2. “Resonator Cavity Configuration and Method”, A.A. Friesem, A. Ishaaya, N. Davidson  and L. Shimshi, U.S. Patent Pending, December 2003.

3. “Holographic Optical Devices”, A.A. Friesem and Y. Amitai, U.S. Patent 6,580,529, June 2003.

4. “Multilevel Diffractive Optical Elements”, Y. Danziger, E. Hasman and A.A. Friesem, U.S. Patent 6,369,948, April 2002.

5. “Multilevel Diffractive Optical Element”, Y. Danziger, E. Hasman and A.A. Friesem, U.S. Patent 6,292,297, September 2001.

6. “Active Wavelength Selection with Resonant Devices”, A.A. Friesem and A. Sharon, U.S. Patent 6,215,928, April 2001.

7. “Compact Planar Optical Correlator”, S. Reinhorn, A.A. Friesem and Y. Amitai, U.S. Patent 6,185,015, February 2001.

8. “Compact Optical Crossbar Switch”, S. Reinhorn, A.A. Friesem, Y.Amitai and S. Gorodeisky, U.S. Patent 6,172,778, January 2001.

9. “Planar Holographic Optical Device for Beam Expansion and Display”, Y. Amitai, A.A. Friesem and I. Shariv, U.S. Patent 6,169,613, January 2001.

10. “Compact Holographic Optical Devices”, Y. Amitai, I. Shariv and A.A. Friesem, Israel Patent 106020, October 2000.

11. “Optical Resonator with Spiral Optical Elements”, Y. Danziger, E. Hasman, N.Davidson and A.A. Friesem, U.S. Patent 6,134,259, October 2000.

12. “OpticalResonatorwithSpiralOpticalElements”, Y. Danziger, E. Hasman, N. Davidson and A.A, Friesem, U.S. Patent 6,134,259, October 2000.

13. “Planar Holographic Optical Device”, Y. Amitai, S. Reinhorn and A.A. Friesem, U.S. Patent 5,966,223, October 1999.

14. “Optical Resonators with Orthoganally Polarized Modes, A.A. Friesem, R. Oron, S. Blit, E. Hasman and N. Davidson, PCT – PCT/IL00/00563, September 2000.

15. “Method and Apparatus for Color-Coded Optical Profilometer”, E. Hasman, A.A. Friesem and N. Davidson, U.S. Patent 5,880,846, March 1999.

16. “OpticalResonatorswithDiscontinuous  Phase  Elements”,  Y. Danziger, A.A, Friesem and R. Oron,  PCT - PCT/IL 98/00204, published, April 1998.

17. “Holographic Optical Devices for the Transmission of Optical Signals of a Plurality of Channels”, A.A. Friesem  and Y. Amitai, U.S. Patent 5,682,255, October 1997.

18. “MethodandApparatusforStorageandRetrievalwithMultilayerOpticalDisks”, E. Hasman and A.A, Friesem, U.S. Patent 5,526,338, June 1996.

19. “Compact Holographic Optical Devices”, Y.  Amitai, I.  Shariv and A.A. Friesem, Israel Patent 106020, June 1993.

20. “Method of Optimizing Holographic Optical Elements”, E. Hasman and A.A. Friesem U.S. Patent 5,075,800, December 1991.

21. “Method of Producing Holograms for Holographic Helmet Displays”, A.A. Friesem and Y. Amitai, U.S. Patent 4,998,786, March 1991.

22. “Holographic Helmet Display”, Y. Amitai and A.A. Friesem, U.S. Patent. 4,998,786, March 1991.

23. “Holographic Focusing Screen”, I. Glaser and A.A. Friesem, U.S. Patent 4,602,843, July 1986.

24. “Optical  Apparatus”,  A.A.  Friesem  and U.  Levy,  Israel  Patent.  55913, 1982.

25. “Process and Device for Recording Holograms on Thermoplastic Materials”, S. Reich and A. A.A. Friesem. Israel Patent 50950. February 1980.

26. “Holographic Recording Medium Containing a 2-Cyanoacrylate Polymer”, S. Reich and A. A.A. Friesem, U.S. Patent 4,139,388, February 1979.

27. “Process for Recording Holographic Information S. Reich and A. A.A. Friesem, U.S. Patent 4,069,049, January 1978.

28. ”Novel Recording Medium”, S. Reich and A.A. Friesem, Israel Patent 46164, 1975.

29. “Display of Multicolor Images Using a Screen with Red, Blue and Green Photoluminescent Segments”, A. A.A. Friesem”, U.S. Patent 3,918,803, November 1975.

30. “MulticolorImage Memory”, A. A, Friesem, U.S. Patent 3,881,800, May 1975.

31. “Multicolor Display”, A. A.A. Friesem, U.S. Patent 3,823, 412, July 1974.

32. “Methods and Apparatus for Unaided Stereo Viewing”, F.B. Rotz and A.A.Friesem, U.S. Patent 3,802.769, April 1974.