Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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 |
| 8125008 | Schottky device and process of making the same comprising a geometry gap A Schottky device and a semiconductor process of making the same are provided. The Schottky device comprises a substrate, a deep well, a Schottky contact, and an Ohmic contact. The substrate is doped with a first type of ions. The deep well is doped with a second ty... | 02/28/2012 |
| 7911031 | Voltage-controlled semiconductor structure, resistor, and manufacturing processes thereof Voltage-controlled semiconductor structures, voltage-controlled resistors, and manufacturing processes are provided. The semiconductor structure comprises a substrate, a first doped well, and a second doped well. The substrate is doped with a first type of ions. The... | 03/22/2011 |
| 7888835 | Rotating shaft and motor rotor having the same A rotating shaft disclosed by the present invention includes a plurality of bumps spacedly formed along an outer circumferential surface thereof. The bumps are each formed with two engagement portions extending outwardly and bilaterally and a deformation space there... | 02/15/2011 |
| 7723887 | Motor rotor A motor rotor is provided. The motor rotor includes a plurality of magnetic members circumferentially disposed on a peripheral wall surface of a turning axle of the motor rotor, and both end surfaces of the turning axle are coupled with fastening members respectivel... | 05/25/2010 |
| 7710095 | Power converter having PWM controller for maximum output power compensation A PWM controller compensates a maximum output power of a power converter having a power switch. The PWM controller includes an oscillator for generating a saw signal and a pulse signal, a power limiter coupled to the oscillator for generating a saw-limited signal in... | 05/04/2010 |
| 7643313 | Power converter for compensating maximum output power and PWM controller for the same A PWM controller compensates a maximum output power of a power converter, and includes a PWM unit and a compensation circuit. The PWM unit generates a PWM signal for controlling a power switch to switch a power transformer, which has a primary winding connected to t... | 01/05/2010 |
| 7633183 | Switching controller for power sharing of parallel power supplies A switching controller for power sharing of power supplies is disclosed. The switching controller includes an input circuit coupled to an input terminal to receive an input signal for generating a phase-shift signal, a first integration circuit coupled to the input ... | 12/15/2009 |
| 7626372 | Control circuit for multi-phase, multi-channels PFC converter with variable switching frequency A switching control circuit for multi-phases PFC converters is provided. It includes a PFC-control circuit coupled to receive a first-inductor signal and a feedback signal for generating a first-switching signal. The first-switching signal is utilized to switch the ... | 12/01/2009 |
| 7622827 | Switching controller for parallel power supply A switching controller for a parallel power supply is disclosed. The switching controller includes an input circuit coupled to an input terminal to receive an input signal for generating a phase-shift signal, a first integration circuit coupled to the input circuit ... | 11/24/2009 |
| 7589393 | Semiconductor structure of a high side driver for two high voltage nodes with partially linked deep wells and method for manufacturing the same A semiconductor structure of a high side driver includes an ion-doped junction. The ion-doped junction includes a substrate, a first deep well and a second deep well, a first heavy ion-doped region and a second heavy ion-doped region. The first deep well and second ... | 09/15/2009 |
| D595740 | Rotor end cover | 07/07/2009 |
