| Patents for H04B 10 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication (73,125) |
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| 01/31/1978 | US4071384 Method and devices for road surface marking |
| 01/24/1978 | US4070572 Linear signal isolator and calibration circuit for electronic current transformer |
| 01/24/1978 | US4070118 Method and an arrangement for fault location in a glass fibre optical waveguide |
| 01/24/1978 | US4070094 Optical waveguide interferometer modulator-switch |
| 01/24/1978 | US4070091 Optical fibre with enhanced security |
| 01/10/1978 | US4068252 Reversible optoelectronic semiconductor device |
| 01/10/1978 | US4067643 Input and output devices for optical fiber |
| 01/10/1978 | US4067642 Reduction of modal and chromatic material dispersion in a multimode optical fiber |
| 01/03/1978 | US4066890 Rotor tip light control |
| 12/27/1977 | US4065729 Monolithic PNPN injection laser optical repeater |
| 12/20/1977 | US4064434 Retro-reflection communication system |
| 12/13/1977 | US4063084 Dual channel optical homodyne receiver |
| 12/13/1977 | US4063083 Data communication system using light coupled interfaces |
| 12/13/1977 | US4062618 Secure optical multiplex communication system |
| 12/06/1977 | US4062043 Apparatus for distributing light signals among a plurality of receivers |
| 11/29/1977 | US4060739 Circuit arrangement for amplifying pulsed signals |
| 11/15/1977 | US4058774 Optical transponder |
| 11/08/1977 | US4057719 Fiber optics electro-mechanical light switch |
| 11/08/1977 | US4057322 Precision surface optical fibers |
| 11/01/1977 | US4056719 Two-way telephone transmission system utilizing opto-couplers |
| 10/18/1977 | US4054834 Device for measuring AC in a high tension line |
| 10/18/1977 | US4054794 Optical communications link |
| 10/18/1977 | US4054366 Fiber optics access coupler |
| 10/11/1977 | US4053847 Self-feedback type low-noise charge sensitive amplifier |
| 10/11/1977 | US4053764 Higher-order mode fiber optics t-coupler |
| 10/04/1977 | US4052611 High speed fiber optic communication link |
| 09/27/1977 | US4051363 Split-path receiver for fiber optics application |
| 09/27/1977 | US4050782 Mode separator and delay equalizer for multimode optical fiber transmission systems |
| 09/13/1977 | US4048585 Tuning type laser oscillator apparatus and laser radar system and laser communication system using the same |
| 09/06/1977 | US4046959 Data communication system using photocouplers |
| 08/30/1977 | US4045667 Color-sensitive photoelectric control system with fiber optics |
| 08/30/1977 | US4045120 Coupler for optical communication system |
| 08/23/1977 | US4044315 Means for producing and amplifying optical energy |
| 08/16/1977 | US4042821 Remote control light receiver |
| 08/02/1977 | US4039249 Integrated optical devices including tunable fixed grating |
| 07/19/1977 | US4036762 Wireless remote-control system for a camera or the like |
| 07/05/1977 | US4033882 Wideband heterodyne receiver for laser communication system |
| 06/28/1977 | US4032951 Growth of iii-v layers containing arsenic, antimony and phosphorus, and device uses |
| 06/28/1977 | US4032802 Reduction of intermodulation |
| 06/28/1977 | US4032714 Pcm time division multiplex communication network with digital subscriber stations |
| 06/14/1977 | US4029976 Amplifier for fiber optics application |
| 06/07/1977 | US4027945 Optical sliprings |
| 05/31/1977 | US4027153 Fibre network having a passive optical coupling element for optoelectronic transmission of data between addressable subscriber stations |
| 05/31/1977 | US4027152 Apparatus and method for transmitting binary-coded information |
| 05/24/1977 | US4025783 Gregorian all-reflective optical system |
| 05/24/1977 | US4025194 Receiver |
| 05/17/1977 | US4024502 Device for remote control of electrical power units |
| 05/17/1977 | US4023887 Optical communication, switching and control apparatus and systems and modular electro-optical logic circuits, and applications thereof |
| 05/03/1977 | US4021661 Submarine optical communication system with fiber optic depth compensator |
| 05/03/1977 | US4021121 Method and apparatus for measuring the distance of a discontinuity of a glass fiber from one end of the fiber |
| 04/26/1977 | US4019805 Optimized parabolic-index optical fiber communication system with incoherent light source |
| 04/19/1977 | US4019048 Regenerator for an optical transmission system |
| 04/12/1977 | US4017149 Multiple access fiber optical bus communication system |
| 04/12/1977 | US4017146 Transmitter for use in a laser communication and ranging system |
| 04/05/1977 | US4016497 Feedbackward distortion compensating circuit |
| 03/29/1977 | US4015217 Means for producing and amplifying optical energy |
| 03/29/1977 | US4015118 Controlling the amplification in a radiation detecting avalanche diode |
| 03/29/1977 | US4015115 Picture phone |
| 03/15/1977 | US4012633 Wide dynamic range analog signal optical communication system |
| 03/15/1977 | US4012149 Measuring method and equipment for locating a break in an optical cable |
| 02/22/1977 | US4009394 Remote control light transmitter employing a cylindrical lens |
| 02/22/1977 | US4009385 Laser control circuit |
| 02/15/1977 | US4008390 Optical pulse transmission system |
| 02/08/1977 | US4006962 Communication system having low dispersion glass optical waveguide |
| 02/01/1977 | US4006465 Apparatus for control and data transfer between a serial data transmission medium and a plurality of devices |
| 01/25/1977 | US4005412 Apparatus for transferring information between electronic display devices and means for transmitting and receiving information and for supplying operating current to the electronic display devices |
| 01/18/1977 | US4004078 Optical communication and display system |
| 01/11/1977 | US4002898 Single mode laser multiterminal optical data communication system |
| 01/11/1977 | US4002896 Telecommunication system |
| 01/04/1977 | US4001578 Optical communication system with bipolar input signal |
| 01/04/1977 | US4001577 Method and apparatus for acousto-optical interactions |
| 12/28/1976 | US4000416 Multi-core optical communications fiber |
| 12/21/1976 | US3999074 Fiber-optic photoelectric power control device |
| 12/21/1976 | US3999060 Device for receiver for optical signals |
| 12/07/1976 | US3996526 Optical radiation generator electrically controlled |
| 11/30/1976 | US3995311 Optical logic elements |
| 11/30/1976 | US3995155 Integrated optical data bus coupler |
| 11/02/1976 | US3989942 Retro-reflecting laser responser and data modulator |
| 10/26/1976 | US3988614 Equalization of chromatic pulse dispersion in optical fibres |
| 10/12/1976 | US3985975 Holographic telephone switching system |
| 10/05/1976 | US3984824 Wide-band optical analog signal link using fiber optics |
| 09/21/1976 | US3982265 Devices containing aluminum-V semiconductor and method for making |
| 09/21/1976 | US3982123 Optical fiber power taps |
| 09/14/1976 | US3980392 Mode transducer for optical wave guides |
| 09/14/1976 | US3980391 Optical fiber transmission compensator |
| 09/07/1976 | US3979686 Optical frequency modulation demodulator |
| 09/07/1976 | US3979587 Component for light detection and emission |
| 08/31/1976 | US3978510 Heterojunction photovoltaic devices employing i-iii-vi compounds |
| 08/31/1976 | US3978343 Optically coupled isolator circuit having increased common mode rejection |
| 08/24/1976 | US3976873 Tunable electroabsorptive detector |
| 08/17/1976 | US3975628 Optical heterodyne receiver with phase or frequency lock |
| 07/27/1976 | US3971930 Polarization compensator for optical communications |
| 07/20/1976 | US3970839 Generating and using coherent optical radiation |
| 07/20/1976 | US3970838 Dual channel phase locked optical homodyne receiver |
| 07/20/1976 | US3970784 Transmission system |
| 07/06/1976 | US3968399 Method for driving a LED at high speed |
| 07/06/1976 | US3968361 Laser receiver anti-sun circuit |
| 06/15/1976 | US3964020 High voltage system with self-test circuitry |
| 06/15/1976 | US3963920 Integrated optical-to-electrical signal transducing system and apparatus |
| 06/15/1976 | US3962911 Method and apparatus for coupling signals from a rotating device with end shafts exposed |