Jun Yu

US Patent:

6614587, Sep 2, 2003

Filed:

Feb 28, 2001

Appl. No.:

09/795789

Inventors:

Jun Yu - Plano TX
Charles Mao - Plano TX
Jin Xie - Dallas TX

Assignee:

Avanex Corporation - Fremont CA

International Classification:

H01S 300

US Classification:

35933712, 35934141, 35934142

Abstract:

A reliable and inexpensive method for deploying, operating and maintaining optical amplifiers in a variety of optical networks under a wide range of conditions using channel number reference tables. A preferred embodiment of the current invention may control one or more optical amplifiers or gain blocks operating in a variety of modes such as AGC mode, ALC mode and hybrid AGC/ALC mode without requiring the use of expensive channel counters. Channel number reference tables may be calculated based on initial input optical power output readings and a count of the number of channels initially served by the amplifier. According to the current invention, changes in the number of channels may be monitored and used to control a gain block by monitoring the gain block input optical power output, converting to a gain block voltage and referencing the channel number reference table.

US Patent:

7026676, Apr 11, 2006

Filed:

Jun 29, 2004

Appl. No.:

10/879670

Inventors:

Joachim Walter Ahner - Pittsburgh PA, US
Jun Yu - Pittsburgh PA, US
Dieter Klaus Weller - Gibsonia PA, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

H01L 29/76

US Classification:

257295, 257532, 257296, 257255, 257301, 257623, 365151, 365117

Abstract:

A memory array includes a memory layer that has hysteretic domains with domain axes extending between first and second memory layer surfaces. A conductive layer on the first memory layer surface has anisotropically increased electrical conductivity in a thickness direction. A movable conductive probe has a contact area on the conductive layer and moves to access a selected hysteretic domain.

US Patent:

20220331472, Oct 20, 2022

Filed:

Mar 29, 2021

Appl. No.:

17/215431

Inventors:

- Cheswick PA, US
Andrew Veter - Pittsburgh PA, US
Keith Huthmacher - Pittsburgh PA, US
Peter Gilgunn - Pittsburgh PA, US
James Nelson - Rillton PA, US
David Malarik - Worthington PA, US
Jun Yu - Pittsburgh PA, US

International Classification:

A61L 9/20

Abstract:

An UV-C device may include several UV-C light sources (e.g., UV-C LEDs) and such UV-C LEDs may have UV-C reflecting structures arranged to direct UV-C in a particular direction and at a particular size and shape. Doing so may, for example, increase the UV-C in a particular direction or working area. A UV-C generating device may be utilized in an air stream, such as an air duct, to sterilize air from that air stream. Multiple UV-C inactivation devices may be coupled in series and placed into a single housing for in order to increase the efficacy of the UV-C inactivation device. The inlet of the device may draw air using an inlet module attachment (e.g., a hood with one or more than one inlet hood) and may output air using an outlet module attachment (e.g., a duct to deliver air to an outflow air duct). Computational fluid dynamic software may be provided where UV-C inactivation devices may be positioned (e.g., manually or autonomously by an adaptive algorithm) to determine impact on airflow against various pathogens (e.g., and/or SARS-CoV-2).

US Patent:

20210299303, Sep 30, 2021

Filed:

Mar 29, 2021

Appl. No.:

17/215402

Inventors:

- Cheswick PA, US
Andrew Veter - Pittsburgh PA, US
Keith Huthmacher - Pittsburgh PA, US
Peter Gilgunn - Pittsburgh PA, US
James Nelson - Rillton PA, US
David Malarik - Worthington PA, US
Jun Yu - Pittsburgh PA, US

International Classification:

A61L 2/10
F24F 13/20
F24F 8/22

Abstract:

An UV-C device may include several UV-C light sources (e.g., UV-C LEDs) and such UV-C LEDs may have UV-C reflecting structures arranged to direct UV-C in a particular direction and at a particular size and shape. Doing so may, for example, increase the UV-C in a particular direction or working area. A UV-C generating device may be utilized in an air stream, such as an air duct, to sterilize air from that air stream. Sound suppression compartments may be placed around a UV-C generating device inlet and/or a device outlet to reduce sound from the UV-C generating device. Human perceivable (e.g., audible, tactile, and/or visual) notifications may be utilized to provide notification of different modes of operation and/or different efficacy levels (e.g., percent ranges of inactivation of a particular or multiple particular viruses, bacteria, spores, etc.

US Patent:

20210299317, Sep 30, 2021

Filed:

Mar 29, 2021

Appl. No.:

17/215367

Inventors:

- Cheswick PA, US
Andrew Veter - Pittsburgh PA, US
Keith Huthmacher - Pittsburgh PA, US
Peter Gilgunn - Pittsburgh PA, US
James Nelson - Rillton PA, US
David Malarik - Worthington PA, US
Jun Yu - Pittsburgh PA, US

International Classification:

A61L 9/20

Abstract:

An air sanitization device is provided where a UV-C generator applied UV-C to infected air for sterilization and then the sterilized air is used to cool heat sinks attached to the UV-C. One or more fans can be utilized to push and/or pull air through the device. For example, the fans may create airflow in the device above, for example 200 liters per minute or above 400 liters per minute. Accordingly, a closed air system with a fan may push air through a UV-C generation device to sanitize air and the sanitized air may be pushed over a heat sink attached to the UV-C generation device and then pushed out of the closed air system into the environment. Thus, sanitized air may be circulated by the fan while being air cooled in a manner that does not circulate contaminated air.

US Patent:

20210299318, Sep 30, 2021

Filed:

Mar 29, 2021

Appl. No.:

17/215414

Inventors:

- Cheswick PA, US
Andrew Veter - Pittsburgh PA, US
Keith Huthmacher - Pittsburgh PA, US
Peter Gilgunn - Pittsburgh PA, US
James Nelson - Rillton PA, US
David Malarik - Worthington PA, US
Jun Yu - Pittsburgh PA, US

International Classification:

A61L 9/20
A61L 2/10
A61L 2/24

Abstract:

An UV-C device may include several UV-C light sources (e.g., UV-C LEDs) and such UV-C LEDs may have UV-C reflecting structures arranged to direct UV-C in a particular direction and at a particular size and shape. Doing so may, for example, increase the UV-C in a particular direction or working area. A UV-C generating device may be utilized in an air stream, such as an air duct, to sterilize air from that air stream. Air may be pushed out of an annulus at the end of an air inactivation device and an annulus outlet cone may be provided in the middle of the annulus to assist, for example, inactivated air in moving smoothly away from the device and reduce pressure at the annulus exit. A UV-C inactivation tube may have UV-C reflective structures at each end to permit air to flow through the tube while reflecting UV-C light back into the tube.

US Patent:

20180232612, Aug 16, 2018

Filed:

Sep 20, 2017

Appl. No.:

15/709819

Inventors:

- Cheswick PA, US
Jun Yu - Pittsburgh PA, US
Allen D. Bowers - Aspenwall PA, US

International Classification:

G06K 19/06

Abstract:

A device, such as a flexible card, may include a dynamic magnetic stripe emulator operable to transmit magnetic stripe information, a first magnet adjacent to a first side of the dynamic magnetic stripe emulator, and a second magnet adjacent to a second side of the dynamic magnetic stripe emulator.