Invalidity dossier
US 6362610
Universal USB power supply unit
Current assignee: Individual
Added 9/24/2026, 1:49:19 AM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 6,362,610 B1
Title: Universal USB power supply unit
Inventor: Fu-I Yang
Assignee: Individual (original and current assignee listed)
Application No.: US 09/928,685
Priority/Filing Date: 2001-08-14
Publication (Grant) Date: 2002-03-26
Anticipated Expiration: 2021-08-14
Legal Status: Expired – Fee Related
Classification: G06F1/266 — supplying power to external peripherals via a communication port
Purpose. The patent addresses the problem that portable electronics (mobile phones, PDAs, digital cameras, game machines, walkmans) require different charging voltages — for example, 4.2V versus 4.5V — while a USB port supplies a fixed 5V DC. The stated aim is a single supply unit that converts USB power to whatever voltage a given product needs, avoiding a separate adapter or desktop charger per device.
Plain-language scope. The unit has a USB port connector that plugs into a computer's USB jack and a charging connector that plugs into the device to be charged. Between them sits an automatic voltage regulator whose housing contains a DC voltage transformer that steps the 5V USB voltage to the voltage delivered to a power/signal connecting jack. Within the transformer is a feedback control voltage output circuit that compares a feedback voltage signal from that jack and causes the transformer to output a preset voltage. A required voltage parameter is preset in the charging connector — described as a variable resistor (VR1) — and is fed back through voltage-dividing points to the voltage stabilizing integrated circuit (identified as model 34063), which controls an inductance to adjust output voltage. The USB connector and regulator may be separate housings joined by a cord, or combined in one box with a projecting USB connector. An LED shows connection state. The description states only the charging connector need be replaced for different products, since the USB connector specification and regulator circuit are unchanged.
Source: https://patents.google.com/patent/US6362610/en
What the excerpt does not establish. The supplied text provides no claims, no named prior-art references, no prosecution history, and no verified litigation, ownership-transfer, or validity information. It does not specify the number of claims granted or their exact wording; the legal-status and assignee entries are expressly noted as assumptions, not legal conclusions.
Generated 10/1/2026, 9:31:03 PM
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Litigation summary
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PTAB challenges
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Assignment history
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Prior art
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Obviousness
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Extensions
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Derivative works
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