1.

Y.Konishi, "Lumped Element Y Circulator", Japanese Patent No. 498885, August 7, 1967 and US Patent 3335674.

2.

Y.Konishi, "Wideband Frequency Band Circulator", US Patent No. 3544920, December 1, 1970.

3.

Y.Konishi, "Circulator", US Patent No. 3551852, December 29, 1970.

4.

Y.Konishi, "Isolator Composing Tuning Lumped Element Circulator", US Patent No. 36144675, October 19, 1971.

5.

Y.Konishi, "Composite Dielectric Resonator", US Patent No. 3798678, March 19, 1974.

6.

Y.Konishi, "Frequency Converting Devices Mounted in a Waveguide", US Patent No. 391635, October 28, 1975.

7.

Y.Konishi, "Microwave Circuit", US Patent No. 4028650, June 7, 1977.

8.

Y.Konishi, "Low Loss Microwave Dielectric Material", US Patent No. 4487842, December 11, 1984.

9.

Y.Konishi et al., "Microwave Circuits", Japanese Patent No. 1330127, August 14, 1986 and US Patent No.3914713, October 21, 1978

10.

Y.Konishi, "FM Demodulation Method", US Patent No. 4563681, January 7, 1986.

11.

Y.Konishi et al., "Microwave filter Device", US Patent No. 4757266, July 12, 1988.

12.

Y.Konishi et al., " Microwave Directional Coupler", US Patent No. 4823097, April 18, 1989.

13.

Y.Konishi et al., "Resonant Wave Filter", US Patent No. 4837535, June 6, 1989.

14.

Y.Konishi et al., "Dielectric Waveguide-Type Filter", US Patent No.4963844, October 16, 1990.

15.

Y.Konishi, "Microwave Band Elimination Filter", Japanese Patent No. 1600298, January 31, 1991.

16.

Y.Konishi, "Removing Circuit of Energy Dispersal", Japanese Patent No. 1704795, October 27, 1992.

17.

Y.Konishi, "Ferri-Magnetic Film Frequency Modulator", US Patent No. 5168248, December 1, 1992.

18.

Y.Konishi, "Dielectric Resonator", Japanese Patent No. 1733777, February 17, 1993.

19.

Y.Konishi et al., "Frequency-Fluctuating Interference Removed Receiver", US Patent No. 5223807, June 29, 1993.

20.

Y.Konishi et al., "Frequency-Fluctuating Interference Removed Receiver", US Patent No. 5317280, May 31, 1998.

21.

Y.Konishi, "S/N Enhancer", US Patent No. 5319325, June 7, 1992.

22.

Y.Konishi, "Electro-Magnetic Wave Shielding Structure", US Patent No. 5374779, December 20, 1994.

23.

Y.Konishi, "Quai-TEM Mode Dielectric Filter", US Patent No. 5410285, April 25, 1995.

24.

Y.Konishi et al., "Rectification Feedback High Frequency Circuit Arrangement Including an Adaptive Filter", US Patent No. 5475873, December 12, 1995.

25.

Y.Konishi et al., "Electronic Apparatus Case Having an Electro-Magnetic Wave Shielding Structure", US Patent No. 5589148, July 23, 1996.

26.

Y.Konishi et al., "Housing for Electronic Apparatus and Method of Damping Unwanted Radiation of Electro-Magnetic Wave", US Patent No. 5841067, November 24, 1998.

Other 300 patents