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| Number | Title | Issue Date |
| 5786918 | Optical communication system and optical transmitting device An optical communication system of a construction wherein the average wavelength dispersion value of the transmission optical fiber used, the optical output intensity of each optical amplifier repeater inserted in the transmission optical fiber and the wi... | 07/28/1998 |
| 5737110 | Optical communication system using dark soliton lightwave An optical transmitter which reverses the ON-OFF state of the optical intensity of a bright soliton lightwave and generates a dark soliton lightwave having an optical phase shift, an optical receiver for the dark soliton lightwave, and a superfast, high-c... | 04/07/1998 |
| 5722786 | Universal joint A universal joint for coupling a pair of members with a connecting rigid link rockable about two sets of pivot axes. Each of the two members has a corresponding bolt hole through which extend respective stepped bolts defining two pivotal axes about which ... | 03/03/1998 |
| 5720986 | Extrusion head for an extrusion installation for the rubber or plastic processing industry An extrusion head having a stationary part fixed on an extrusion installation having a plurality of extrusion cylinders supplying an extrudate formed from several components. The stationary part has extrudate flow channels each in communication with a res... | 02/24/1998 |
| 5706702 | Controller for operation of transmission in motor car Here is disclosed a controller for operation of transmission in motor car comprising a control cable (14) of triple structure consisting of an outer tube (15), an inner tube (16) slidably inserted into the outer tube (15) and a length of wire (17) slidabl... | 01/13/1998 |
| 5708752 | Fluoride optical fiber for high power laser transmission A high power laser transmitting fluoride glass fiber of an enhanced 2.94- μm laser damage threshold value is disclosed, in which either of the core with a high refractive index and the cladding with a low refractive index is formed of fluoride glass whic... | 01/13/1998 |
| 5690236 | Valet A valet constructed as a case having a top, sides and an open bottom. The case houses a sliding drawer having a front panel, sides constructed as frame slidable on support guides interiorly of the sidewalls of the case and also has an open bottom. A cloth... | 11/25/1997 |
| 5690010 | Apparatus in forging machine to cut material A shear die is axially divided into a pair of die portions 18,19 between which a holding cavity 22 is formed, wherein the holding cavity has a diameter that is less than that of material "a" so that when one of the die portions is forced against the other... | 11/25/1997 |
| 5689355 | Repeater using optical cables for radio paging system A repeater which is installed as measures for silent zones, which automatically compensates for a variation in a light loss caused by a difference in length among optical cables interconnecting a master device and a plurality of slave devices which are al... | 11/18/1997 |
| 5673937 | Energy-absorbing device for automobile vehicle steering columns An energy-absorbing device for an automobile steering column having a body-tube housing the steering shaft. A support made as two parallel vertical members mountably fixed on a vehicle body mount the steering column axially between them. The body-tube has... | 10/07/1997 |
| 5662369 | Device for collapsing a backrest of a backseat of a car A device for collapsing a backrest of a backseat of a car for placing in communication a rear trunk with the passenger compartment of the car. The backrest is biased from an upright position to a collapsed position forwardly by a coiled biasing spring. A ... | 09/02/1997 |
| 5663572 | Optical functional semiconductor element An optical functional semiconductor element which performs ultrafast, high-contrast logic operation through utilization of the high speed of light velocity. A resonant-tunneling diode having a negative resistance characteristic is provided apart from a li... | 09/02/1997 |
| 5642215 | Optical transmission system An optical transmission system which permits long-distance, ultrafast, high-capacity optical soliton transmission by suppressing timing jitter with simple means. In an optical transmission system which uses a transmission line composed of an optical fiber... | 06/24/1997 |
| 5640678 | Macrocell-microcell communication system with minimal mobile channel hand-off A mobile communication system is disclosed which precludes the necessity for mobile station to perform processing for microcell zone switching even when it moves from one microcell zone to another and which permits high-speed microcell zone handover. The ... | 06/17/1997 |
| 5640450 | Speech circuit controlling sidetone signal by background noise level A speech circuit is disclosed which solves the serious problem of the degradation of the articulation of received speech voice in conventional circuits and permits pleasant communications at places where the background noise level is high. The circuit has... | 06/17/1997 |
| 5630790 | Massager of roller type A driven massager of roller type for incorporation into a seat or backrest of a chair or into a mat as traveling massage unit. A traveling housing of the massage unit houses and carries drive and operating mechanisms for driving the traveling unit and ope... | 05/20/1997 |
| 5629795 | Optical amplifying-repeating transmission system An optical amplifying-repeating transmission system is disclosed which is composed of an optical fiber for transmitting a lightwave signal with digital information added to return-to-zero lightwave pulses and a plurality of optical amplifying repeaters in... | 05/13/1997 |
| 5625479 | Soliton optical communication system and optical transmitter and optical receiver therefor An optical transmitter which reverses the ON-OFF state of the optical intensity of a bright soliton lightwave and generates a dark soliton lightwave having an optical phase shift, an optical receiver for the dark soliton lightwave, and a superfast, high-c... | 04/29/1997 |
| 5621760 | Speech coding transmission system and coder and decoder therefor A speech coding transmission system is disclosed in which a coder of a differential coding system quantizes a difference between a predictive value from an adaptive predictor and an input speech signal by an adaptive quantizer in accordance with the level... | 04/15/1997 |
| 5614916 | Elliptic beam horn antenna An elliptic beam antenna easy to design and simple in structure. To generate elliptic beams of about the same size regardless of the kind of polarized waves for excitation, a horn antenna or waveguide structure intended for radiating out radio waves into ... | 03/25/1997 |
| 5609364 | Energy-absorbing device, particularly for automobile vehicle steering columns An energy-absorbing device disposed between two elements which are movable apart from each other in response to an externally applied force. The device has a wire coil winding having a plurality of turns at one end and a rectilinear length portion at anot... | 03/11/1997 |
| 5598897 | Power steering device A power steering device for automobile type vehicles having a hydraulic power cylinder for assisting in steering front end wheels of the vehicle. The hydraulic power cylinder has a piston and piston rod fixed thereto reciprocable in two opposite direction... | 02/04/1997 |
| 5599399 | Baths and process for the chemical polishing of stainless steel surfaces Process for chemical polishing of austenitic stainless steel surfaces using chemical polishing baths effective at a slow rate of reaction. The baths include in an aqueous solution a mixture of hydrochloric acid, nitric acid and phosphoric acid, an optiona... | 02/04/1997 |
| 5599282 | Massager of roller type with splined shaft A massager having a massage unit provided with elongate coaxial massage rollers rotational on a common axis in a common plane extending above the unit transversely of a travel path defined by a pair of laterally spaced parallel racks on which the unit rec... | 02/04/1997 |
| 5595399 | Energy-absorbing device with axial holding for automobile vehicle steering columns An energy-absorbing device for an automobile steering column adjustable in depth and/or inclination mounted on a support structure fixed to the vehicle body. The body-tube and steering shaft are clamped and locked in the support structure. A securing devi... | 01/21/1997 |
| 5593183 | Energy-absorbing device for vehicle steering column An energy-absorbing device for an automobile steering column adjustable in depth and/or inclination mounted on a support structure fixed to the vehicle body. The body-tube and steering shaft are received in the support structure and clamped and locked the... | 01/14/1997 |
| 5588396 | Spawning case for use in an aquarium A spawning case for use in an aquarium comprises in combination a rectangular case body (A) and filter (B). The case body (A) is arranged within the aquarium so as to communicate with water. The case body A includes a multiplicity of passage slits (11) an... | 12/31/1996 |
| 5585954 | Apparatus for measuring optical transmission characteristic An apparatus for measuring optical transmission characteristic, which has an input unit of data signal and of clock pulses, a signal decision unit, a display unit and a control unit. The signal decision unit comprises a plurality of signal decision circui... | 12/17/1996 |
| 5582326 | Drinking-water service system for athletes A drinking-water service system for supplying individual cylindrical containers of drinking water to athletes. A storage and dispensing unit for storing the containers for semi-automatically sequentially dispensing individually the drinking water containe... | 12/10/1996 |
| 5579603 | Plant growing method for greening wall surfaces A plant-growing method for greening upright or slant wall surface is disclosed. A flexible bag is first prepared including a plurality of compartments sequentially juxtaposed in the direction of the overall length of the bag. The compartments are each pro... | 12/03/1996 |
| 5574590 | Optical amplifying transmitting system An optical amplifying transmission system is disclosed in which a large quantity of optical fiber whose zero dispersion wavelength is longer than the wavelength of the lightwave signal is introduced to provide an RZ lightwave signal transmission system. I... | 11/12/1996 |
| 5564237 | Earthquake resisting support construction for structures An earthquake resisting support construction which supports a structure at a required position on the surface of ground having a bearing capacity of soil large enough to withstand the weight of the structure, comprising, at each support position: a number... | 10/15/1996 |
| 5555546 | Apparatus for decoding a DPCM encoded signal A voice decoding apparatus of an adaptive PCM coding system in which an auxiliary controller is provided between a controller and a prediction coefficient holder. The controller receives a voice activity detection flag b separated from a received demodula... | 09/10/1996 |
| 5554012 | Air controller for air pump An air controller for an air pump capable of simply regulating the air delivery rate of the air pump. In an air pump including an electromagnetic driving mechanism 11, 13, 14, a magnet 17 carried on the tip of an arm 16, and a diaphragm 18 connected to th... | 09/10/1996 |
| 5548801 | System for determining and registering location of mobile terminal for communication system with non-geosynchronous satellites A system for determining and registering the location of mobile terminals in a mobile communication system using non-geosynchrous satellites, in which each land earth station transmits its identification information via spot beams of satellites or togethe... | 08/20/1996 |
| 5548638 | Audio teleconferencing apparatus An audio teleconferencing apparatus which permits two-way communications between more than two parties without the necessity of complete switching and does not allow a loss to increase in a communication channel of a particular speaker. The audio teleconf... | 08/20/1996 |
| 5543813 | System for determining and registering location of mobile terminal for communication system with non-geosynchronous satellites The non-geosynchronous orbiting satellites each transmit identification information given to each of spot beams irradiated from them. A mobile terminal, when registering its location, receives the spot beam identification information at some moments in ti... | 08/06/1996 |
| 5544245 | Mutual authentication/cipher key delivery system The network and each user i share an encryption algorithm EKi () using his authentication key Ki as a cipher key, its inverse function EKi-1 (), a specific function F() and its inverse function F-1 ()... | 08/06/1996 |
| 5539557 | Supervisory signal receiving method and apparatus At the time of receiving a repeater supervisory signal superimposed on or combined by wavelength multiplexing with a main optical signal in an optical amplifier repeater system, the received optical signal is subjected to a photoelectric conversion by a p... | 07/23/1996 |
| 5539858 | Voice coding communication system and apparatus A voice coding communication system in case of applying an adaptive differential PCM system in which a discontinuous transmitter is provided at the transmitting side to reduce its power consumption, transmission is suspended during a silent duration, and ... | 07/23/1996 |
