Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4212056 | Inverter apparatus In an inverter apparatus of the type comprising a plurality of thyristors connected between a DC source and an AC load, a control circuit for sequentially turning ON and OFF the thyristors according to a predetermined sequence, and a reverse bias circuit ... | 07/08/1980 |
| 4212057 | Shared memory multi-microprocessor computer system A multiprocessor microcomputer system having two or more substantially independent processors each of which has its own bus-type interconnection structure, and a shared memory accessible by any of the processors without interferring with the proper operat... | 07/08/1980 |
| 4212058 | Computer store mechanism In a computer system having two levels of memory, a random access memory is used as a slave store for both code and directly addressed data. Each slave store word includes two slave address fields, one for the slave address of an operand and the other for... | 07/08/1980 |
| 4212059 | Information processing system An information processing system includes an information processing unit and an operation console. The information processing unit includes a CPU having a fault diagnostic unit which is coupled with the diagnostic interface port of the operation console, ... | 07/08/1980 |
| 4212060 | Method and apparatus for controlling the sequence of instructions in stored-program computers A method and apparatus for controlling the instruction sequence in a stored program data processing system is described. An interrogation instruction causes the execution of a conditional check. As a result of this conditional check, one or the other of t... | 07/08/1980 |
| 4212061 | Radiation signal processing system A gamma ray scintillation camera generating (X,Y) spatial coordinate and Z energy signals relative to detected radiation events. The camera signals are converted to their digital equivalents subsequent to which the apparent coordinate locations of detecte... | 07/08/1980 |
| 4212062 | Tomographic imaging system A tomographic imaging system is disclosed in which the quantity of absorption or transmittance of a transmissive radiation by or through a certain tomographic cross-section of an object under consideration is detected and the distribution of radiation abs... | 07/08/1980 |
| 4212063 | Apparatus for measuring the action of forces between wheeled vehicles and substructure An apparatus for measuring the action of forces between a wheeled vehicle and a substructure wherein the invention relates to the improvement of a measuring apparatus having a plurality of controls for selecting measuring distances of varying lengths, wit... | 07/08/1980 |
| 4212064 | Performance advisory system A performance advisory system which includes a display, a control unit and an onboard computer, the computer receiving inputs from aircraft instruments and gauges and from the control unit and providing advisory output information on the display.... | 07/08/1980 |
| 4212065 | Altitude compensation feature for electronic fuel management systems An electronic control unit for regulating the air/fuel ratio of an internal combustion engine is disclosed. The electronic control unit has an open loop calibration for regulating the air/fuel ratio that is corrected with a closed loop correction signal d... | 07/08/1980 |
| 4212066 | Hybrid electronic control unit for fuel management systems A hybrid electronic control unit for regulating the air/fuel ratio of an internal combustion engine is disclosed. The electronic control unit is divided into two functionally distinct parts including an analog function generator and a digital function gen... | 07/08/1980 |
| 4212067 | Navigating device A keyboard entry VOR receiver incorporating a phase locked loop frequency synthesizer under processor control is disclosed. In one version a scanning VOR navigation receiver with a multitude of VOR displays operating from that one receiver and under the c... | 07/08/1980 |
| 4212068 | System for calculating and displaying sales information A system for computing and displaying quantity and cost of a liquid flowing through a pipe, as gasoline delivered to a consumer. A detector responsive to the passing of a predetermined quantity of the liquid provides a pulse function to money and quantity... | 07/08/1980 |
| 4212069 | Paratransit fare computation and dispatching method This disclosure is concerned with rendering more flexible and useful the fare computations and dispatching services in the taxi industry and the like, by a novel type of centralized computed control of and cooperating and interfacing with, vehicular meter... | 07/08/1980 |
| 4212070 | Control system for a furfural refining unit receiving heavy sweet charge oil A furfural refining unit treats heavy sweet charge oil with a furfural solvent in a refining tower to yield raffinate and extract mix. The furfural is recovered from the raffinate and from the extract mix and returned to the refining tower. A system contr... | 07/08/1980 |
| 4212071 | Method and device for driving a compaction machine The invention relates to the operation of a compacting machine. At least certain of the data relating to the operating parameters are stored in a memory; the length to be traversed L, the advance length la, the number of passes nP or round-trips to be exe... | 07/08/1980 |
| 4212072 | Digital scan converter with programmable transfer function A digital scan converter is provided with a programmable transfer function for video display of picture elements (pixels) using a main random access memory for storing a pixel array to be read out periodically for display, and to be selectively read out w... | 07/08/1980 |
| 4212073 | Method and system for surface contouring A method and system for surface contouring including: projecting a sinusoidal pattern on a surface to be tested; shifting the pattern in three steps at one-quarter period intervals of the sinusoidal pattern; sensing the intensity of the radiation from the... | 07/08/1980 |
| 4212074 | Weight measuring method and apparatus thereof A weight measuring apparatus comprises a load cell for generating an analog signal corresponding to load applied, and A/D converter for converting an output signal from the load cell into a digital signal, a data processing unit which periodically reads a... | 07/08/1980 |
| 4212075 | Electrical component testing system for component insertion machine A testing system is provided within a component insertion machine for testing a component immediately prior to its insertion into a printed circuit board. The insertion of the component is conditioned upon the successful passage of one or more tests that ... | 07/08/1980 |
| 4212076 | Digital computer structure providing arithmetic and boolean logic operations, the latter controlling the former A digital computer of relatively simple and efficient structural organization which is capable not only of conventional arithmetic operations according to a program but also of (i) performing chained Boolean logic processing on any selected bit of any of ... | 07/08/1980 |
| 4212077 | Text processing system for displaying and editing a line of text A text processing system comprises a keyboard, a printing unit, a display unit having the capacity of displaying up to a line of entered text and a control unit which updates the display unit upon each entry of a character from the keyboard, and enables t... | 07/08/1980 |
| 4212078 | Computer controlled facility management system (FMS) A central control system includes a central processing unit (CPU) installed in a central location of a facility, and interconnected with a plurality of remote controllers, each located in an associated one of several buildings in the facility and each inc... | 07/08/1980 |
| 4212079 | Electronic calorie counter A calorie monitoring device is provided for providing a visual output which compares the number of calories burned by an individual versus the calorie intake for the individual. The device has a keyboard which functions as a first input to input the calor... | 07/08/1980 |
| 4212080 | Data transmission control system A system for transferring data between a plurality of devices is disclosed. Each of the devices is connected to a communication bus by a corresponding control unit. The communication bus comprises a data signal path and a control signal path. Each control... | 07/08/1980 |
| 4212081 | Programmable sequence controller with auxiliary function decoding circuit In a programmable sequence controller, a memory stores an auxiliary function decoding program comprising command information and address information. A comparator circuit capable of a simultaneous comparison of a plurality of bits is operatively connected... | 07/08/1980 |
| 4212082 | Method for fabrication of improved storage target and target produced thereby An improved target for storage of electric charge, in an electron beam addressable memory, utilizes an anodic oxide grown upon a semiconductor layer, forming part of a semiconductor diode structure. The anodic oxide is overlayed with a planar film of cond... | 07/08/1980 |
| 4212083 | MOS Integrated with implanted resistor elements Resistor elements for MOS integrated circuits are made by an ion implant step compatable with a self-aligned N-channel silicon-gate process. The resistor elements are beneath the field oxide in the finished device, although the implant step is prior to fo... | 07/08/1980 |
| 4212084 | Beam-former for FFT-based signal processor A beam-former for sampling and digitizing a sonar signal preparatory to F Fourier Transformer (FFT) processing comprising an array of ceramic sensors forming a series of rows and columns, a sampling transformer for each row and each column for sampling t... | 07/08/1980 |
| 4212085 | Frequency activated direction indicator A direction indicator giving a visual indication of the direction of origin of incident sounds having frequencies in a predetermined frequency range, is disclosed herein. The direction indicator embodies at least three sound detectors, each having an acti... | 07/08/1980 |
| 4212086 | Measuring and recording device for monitoring vibrations caused by blasting The device comprises a transducer for measuring mechanical vibrations, and means including an analogue/digital converter for recording on paper tape, or the like, the signals generated by the transducer whenever it detects mechanical vibrations. A regulat... | 07/08/1980 |
