...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!!
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 |
| 8178112 | Ketoprofen compositions and methods of making them A wide variety of pharmaceutically and commercially acceptable dosage forms of ketoprofen are prepared by dissolving ketoprofen in pharmaceutically acceptable solvents. ... | 05/15/2012 |
| 7874459 | Dispensing system for blended frozen food compositions An apparatus for dispensing soft serve frozen food product, such as soft serve ice cream and the like, provides the ability to select the fat content or other characteristic of the ice cream dispensed from the machine. ... | 01/25/2011 |
| 7840474 | Method and system for managing requests for proposals for electronic trading of financial instruments A method and system for electronically trading financial instruments is disclosed. In one embodiment of the disclosed invention, traders generate requests for proposals (“RFPs”) on financial instruments. The RFPs are broadcast to traders whose tradeable structur... | 11/23/2010 |
| 7681761 | Apparatus for processing, storing, and dispensing soft serve frozen food product Soft serve frozen food such as ice cream and frozen yogurt is pumped from a sanitary reservoir into a closed loop flow path that includes an emulsion barrel assembly that intimately mixes the ingredients in the food composition into a smooth consistency frozen food ... | 03/23/2010 |
| 7523078 | Bayesian approach for sensor super-resolution Bayesian super-resolution techniques fuse multiple low resolution images (possibly from multiple bands) to infer a higher resolution image. The super-resolution and fusion concepts are portable to a wide variety of sensors and environmental models. The procedure is ... | 04/21/2009 |
| 7446627 | Compact stabilized full-band power amplifier arrangement High frequency power amplification modules comprise a dielectric substrate supporting a stepped impedance transition coupled to the input of a power amplifier and a symmetrically disposed stepped impedance transition connected to the output of the power amplifier. T... | 11/04/2008 |
| 7423490 | Wideband high frequency chokes An n-stage RF choke comprises a series connection of two or more inductors connected in series between a source and a load. The inductor closest to the source has the largest inductance and the inductance closest to the load has the smallest inductance. The inductan... | 09/09/2008 |
| 7358830 | Compact segmented stub A segmented stub has at least one serpentine signal path that increases the effective electrical length of the stub without increasing the overall physical length or area of the stub. This permits more compact monolithic millimeter-wave and microwave integrated circ... | 04/15/2008 |
| 7090859 | Ketoprofen compositions and methods of making them A wide variety of pharmaceutically and commercially acceptable dosage forms of ketoprofen are prepared by dissolving ketoprofen in pharmaceutically acceptable solvents. ... | 08/15/2006 |
| 5646759 | Fiber loop mirror for time division demultiplexing An improved optical loop mirror is used in an optical demultiplexer to demultiplex time division multiplexed optical communications channels. High bit-rate optical pulses representing a plurality of time division multiplexed communications channels are in... | 07/08/1997 |
| 5551015 | Method and apparatus for direct conversion of programs in object code form between different hardware architecture computer systems Application programs compiled for a first, "source", computer are translated, from their object form, for execution on a second, "target", computer. The translated application programs are linked or otherwise bound with a translation of the source compute... | 08/27/1996 |
| 5542010 | Rapidly tunable wideband integrated optical filter A monolithically integrated wideband optical filter which is rapidly tunable to a large number of optical frequencies over a wide optical frequency range comprises two series connected optical filters of different resolutions formed in a semiconductive wa... | 07/30/1996 |
| 5534826 | Oscillator with increased reliability start up Oscillation is easily and reliably initiated in an oscillator by increasing the gain of the circuit at startup time. For example, the gain of an oscillator circuit may be increased at startup by reducing the value of a user controlled impedance until osci... | 07/09/1996 |
| 5521538 | Adiabatic logic Clocked low power logic circuitry with static inputs and outputs is adiabatically operated. A variety of logical functions is achieved without complex circuitry or unusually configured devices. This logic circuitry can be configured to perform a variety o... | 05/28/1996 |
| 5498863 | Wavelength-sensitive detectors based on absorbers in standing waves An optoelectronic detector includes multilayered semiconductor structures that are placed at particular positions in a standing wave pattern in order to measure the intensity of the light beams passing through said structures' layers. The detector is made... | 03/12/1996 |
| 5477197 | Voltage controlled oscillator with improved voltage versus frequency characteristic An undesirable relationship between user applied input frequency control voltage and output frequency of a voltage controlled oscillator is counteracted by controlling the characteristics of an amplifier stage in the oscillator as a function of frequency ... | 12/19/1995 |
| 5477164 | Adiabatic dynamic noninverting circuitry An adiabatic dynamic non-inverter circuit is a mechanism by which a logic level signal and its inverse are simultaneously available in dynamic logic circuitry without significant power dissipation. The principles of this non-inverter circuit are used to c... | 12/19/1995 |
| 5473270 | Adiabatic dynamic precharge boost circuitry Power dissipation in precharge paths used in adiabatic dynamic logic circuitry is reduced by a precharge boost circuit which decreases the impedance between a clock node and an output node in such logic circuitry and thereby increases the charging current... | 12/05/1995 |
| 5473269 | Adiabatic dynamic logic A novel family of adiabatic dynamic logic gates can have power*delay products at least an order of magnitude or more below that which was possible in previous families of logic gates. No complex circuitry or unusually configured devices are needed to impl... | 12/05/1995 |
| 5471318 | Multimedia communications network A circuit configuration in a multimedia network representing a controllably persistent virtual meeting room simulates an actual meeting room where conferences between two or more people may be held. This facilitates the creation in the network of flexible... | 11/28/1995 |
| 5463620 | Bandwidth allocation, transmission scheduling, and congestion avoidance in broadband asynchronous transfer mode networks A wide variety of call traffic is effectively integrated in a single broadband communications network. Calls having widely differing bandwidth requirements and sensitivities to delay are handled by the network with efficient, effective, and fair bandwidth... | 10/31/1995 |
| 5463685 | Network based outbound call management An outbound call management capability is provided for a public switched telephone network by a network based outbound call management (NOCM) complex, which can be accessed by all subscribers to the public switched network through one or more central offi... | 10/31/1995 |
| 5459414 | Adiabatic dynamic logic A novel family of adiabatic dynamic logic gates can have power*delay products at least an order of magnitude or more below that which was possible in previous families of logic gates. No complex circuitry or unusually configured devices are needed to impl... | 10/17/1995 |
| 5455701 | Packet switching apparatus using pipeline controller A high-speed, high-capacity, asynchronous transfer mode packet switching system comprises electronic and optical components. The switching system may be a high-capacity multiple-gigabit-per-second optical system controlled by a relatively low-speed electr... | 10/03/1995 |
| 5450511 | Efficient reflective multiplexer arrangement The efficiency and freedom from cross-talk achieved by transmissive multiplexer/demultiplexer devices is achieved in a reflective multiplexer/demultiplexer device. The reflective geometry avoids the large size devices necessitated by transmissive geometri... | 09/12/1995 |
| 5384826 | Distributed packetized switching cellular radio telephone communication system with handoff A cellular switching system and architecture is described in which the switching associated with a call originated within one cell but now serviced within another cell is distributed among base stations which are interconnected with each other through a l... | 01/24/1995 |
| 5371780 | Communications resource assignment in a wireless telecommunications system Fast resource assignments, especially needed in microcellular network architectures having many fast moving subscribers and high traffic volume, is provided through the use of a priority based resource assignment apparatus and procedure. Part of the commu... | 12/06/1994 |
| 5355345 | Fully scalable memory apparatus A memory is partitioned into rows and columns of memory blocks comprised of latches, sense amplifiers, and logic circuitry that form independent pipelines through which flow a) input addresses for memory access requests and b) data to be written into a sp... | 10/11/1994 |
| 5353335 | Multilingual prepaid telephone system A prepaid telephone system having multilingual capabilities is provided in a public switched telephone network. A telephone user buys a predetermined amount of service beforehand and receives a card imprinted with a unique account number. A plurality of t... | 10/04/1994 |
| 5353351 | Secure teleconferencing Secure teleconferencing between three or more parties is achieved by receiving encrypted information streams from each of the parties to the conference. The encrypted information streams are received in decryption/re-encryption units co-located with a con... | 10/04/1994 |
| 5343320 | Pump laser control circuit for an optical transmission system An optical transmission system, especially useful in undersea applications, includes an optical path between two terminals with one or more repeaters located between the terminals for amplifying optical communications signals flowing in the optical path. ... | 08/30/1994 |
| 5339157 | Rapidly tunable integrated optical filter A monolithically integrated optical filter which is rapidly tunable over a wide optical frequency range comprises an input frequency router connected to an output frequency router by means of controllably transmissive waveguides. A control circuit applies... | 08/16/1994 |
| 5313614 | Method and apparatus for direct conversion of programs in object code form between different hardware architecture computer systems Application programs compiled for a first, "source", computer are translated, from their object form, for execution on a second, "target", computer. The translated application programs are linked or otherwise bound with a translation of the source compute... | 05/17/1994 |
| 5304846 | Narrow channel finned heat sinking for cooling high power electronic components Dissipation of the heat produced by the operation of electronic circuitry may be improved by a heat sink which comprises a flat base from which a number of vertical fins extend. The fins are parallel to one another and define a number of parallel channels... | 04/19/1994 |
| 5299257 | Subscriber initiated non-intrusive network-based analysis of facsimile transmissions Non-intrusive monitoring and analysis of real-time facsimile transmissions is accomplished. Analog impairment measurements are made on the high speed page signal in those transmissions and protocol analysis is made on the low speed control messages in tho... | 03/29/1994 |
| 5294831 | Circuit pack layout with improved dissipation of heat produced by high power electronic components Dissipation of the heat produced by the operation of electronic circuitry may be improved by a heat sink which comprises a flat base from which a number of vertical fins extend. The fins are parallel to one another and define a number of parallel channels... | 03/15/1994 |
| 5291481 | Congestion control for high speed packet networks Congestion in a high speed connection oriented packet network carrying bursty data and real time service is avoided by a novel in-call negotiation scheme for reserving bandwidth for real time calls and reserving buffer capacity for bursty calls. For a rea... | 03/01/1994 |
| 5285441 | Errorless line protection switching in asynchronous transer mode (ATM) communications systems An errorless line protection apparatus involves receipt of data from an active line and a standby line. A determination is made as to whether the data from the active line leads or lags the data on the standby line. A switching system directs the leading ... | 02/08/1994 |
| 5265109 | Ultrashort optical pulse signals generation Apparatus is disclosed for generating two streams of optical pulse signals having less than 100 femtoseconds of jitter. A Ti:sapphire laser that is self mode locked by using self focusing in the gain medium and a weak HITCI intercavity dye jet for startin... | 11/23/1993 |
| 5136671 | Optical switch, multiplexer, and demultiplexer An N×N integrated optical interconnection apparatus capable of switching, multiplexing, or demultiplexing a large number of input and output wavelength channels achieves low levels of crosstalk and insertion loss. Two substantially identical N×M star co... | 08/04/1992 |