Joe G Ojeda

US Patent:

20190338866, Nov 7, 2019

Filed:

Jan 22, 2019

Appl. No.:

16/253382

Inventors:

- Austin TX, US
Parthiban Arunasalam - Austin TX, US
Joe A. Ojeda - Austin TX, US

Assignee:

DunAn Microstaq, Inc. - Austin TX

International Classification:

F16K 99/00
F16K 31/08

Abstract:

A two-stage fluid control valve includes a first stage electronically switchable, bi-stable two-port valve movable between an open position and a leak-free closed position, and a second stage microvalve configured to control the flow of fluid through a fluid outlet of the two-stage fluid control valve when the first stage electronically switchable, bi-stable two-port valve is in the open position. The electronically switchable, bi-stable two-port valve is disposed between the second stage microvalve and a fluid inlet of the two-stage fluid control valve.

US Patent:

20190257439, Aug 22, 2019

Filed:

Dec 31, 2018

Appl. No.:

16/236913

Inventors:

- Austin TX, US
Parthiban Arunasalam - Austin TX, US
Kevin C. Sinkar - Austin TX, US
Dhaman K. Besarla - Leander TX, US
Gengxun K. Gurley - Hutto TX, US
Joe A. Ojeda - Austin TX, US
Chen Yang - Austin TX, US

Assignee:

DunAn Microstaq, Inc. - Austin TX

International Classification:

F16K 31/08
F16K 31/06

Abstract:

An electronically switchable, bi-stable two-port valve includes a sleeve, a first pole piece having air flow passages formed therethrough and a first wire-wound coil mounted therein and connected to a source of electrical power, a second pole piece having air flow passages formed therethrough and a second wire-wound coil mounted therein and connected to the source of electrical power, and a permanent magnet defining an armature and movably mounted between the first and second pole pieces. The first pole piece is mounted in a first end of the sleeve and the second pole piece is mounted in a second end of the sleeve.

US Patent:

20190092629, Mar 28, 2019

Filed:

Nov 29, 2018

Appl. No.:

16/204130

Inventors:

- Austin TX, US
Joe A. Ojeda - Austin TX, US
Gengxun K. Gurley - Hutto TX, US
Joseph L. Nguyen - Austin TX, US

Assignee:

DunAn Microstaq, Inc. - Austin TX

International Classification:

B81C 1/00
B23K 1/00
B23K 35/02
B81C 3/00
B23K 101/36

Abstract:

A method of attaching a MEMS die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a MEMS die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the MEMS die to a position where the surface tensions balance, and the MEMS die is centered on, and rotationally aligned with, the solder surface of the body.

US Patent:

20190092630, Mar 28, 2019

Filed:

Nov 29, 2018

Appl. No.:

16/204136

Inventors:

- Austin TX, US
Joe A. Ojeda - Austin TX, US
Gengxun K. Gurley - Hutto TX, US
Joseph L. Nguyen - Austin TX, US

Assignee:

DunAn Microstaq, Inc. - Austin TX

International Classification:

B81C 1/00
B23K 1/00
B23K 35/02
B81C 3/00
B23K 101/36

Abstract:

A method of attaching a MEMS die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a MEMS die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the MEMS die to a position where the surface tensions balance, and the MEMS die is centered on, and rotationally aligned with, the solder surface of the body.

US Patent:

20190078819, Mar 14, 2019

Filed:

Nov 8, 2018

Appl. No.:

16/184620

Inventors:

- Austin TX, US
Parthiban Arunasalam - Austin TX, US
Joe A. Ojeda - Austin TX, US
Gengxun K. Gurley - Hutto TX, US
Chen Yang - Austin TX, US
Jennifer O'Keefe - Austin TX, US

Assignee:

DunAn Microstaq, Inc. - Austin TX

International Classification:

F25B 41/06

Abstract:

A spool assembly configured for use in a two-stage proportional control valve in a fluid system includes a substantially cylindrical sleeve having an axially extending sleeve bore extending from an open first end to an open second end. A spool includes a spool bore that extends from an open first axial end to a closed second axial end and is slidably mounted within the sleeve bore. The spool further includes a first circumferentially extending groove defining a fluid flow path, a second circumferentially extending groove formed near a first end thereof, a third circumferentially extending groove formed near the second axial end thereof, a circumferentially extending pressure groove formed therein between the second axial end and the third circumferentially extending groove, and first, second, and third transverse fluid passageways formed through a side wall of the spool.

US Patent:

20180319656, Nov 8, 2018

Filed:

Mar 1, 2018

Appl. No.:

15/909431

Inventors:

- Austin TX, US
Joe A. Ojeda - Austin TX, US
Joseph L. Nguyen - Austin TX, US

Assignee:

DunAn Microstaq, Inc. - Austin TX

International Classification:

B81C 3/00
B81C 1/00
H05K 3/34
G01K 13/02
G01K 15/00

Abstract:

A method of attaching a MEMS die to a mounting surface includes coating an inside surface of a pressure port of a fluid inlet member with a layer of solder mask, the fluid inlet member having a first axial end, a second axial end, and a port opening of the pressure port formed in the second axial end of the fluid inlet member. A solder preform is disposed on the mounting surface of the fluid inlet member and a MEMS die is disposed on the solder preform. The solder preform is heated in a re-flow operation to attach the MEMS die to the mounting surface, wherein the solder mask within the pressure port prevents molten solder from entering the pressure port during the re-flow operation.

US Patent:

20180214646, Aug 2, 2018

Filed:

Jul 25, 2017

Appl. No.:

15/658861

Inventors:

- Austin TX, US
Parthiban Arunasalam - Austin TX, US
Joseph L. Nguyen - Austin TX, US
Joe A. Ojeda - Austin TX, US
Wayne C. Long - Austin TX, US

Assignee:

DunAn Microstaq, Inc. - Austin TX

International Classification:

A61M 15/00
A61M 16/20
A61M 39/22
F16K 99/00

Abstract:

An improved aerosol dispensing apparatus includes an aerosol container, a discharge piece, an actuator, a flow control canister valve assembly attached to the aerosol container, a battery, and an electronically controlled flow control valve electronically connected to the battery and in fluid communication with the flow control canister valve assembly. The aerosol container and the attached flow control canister valve assembly are further attached to the actuator and the actuator is mounted for slidable movement within the discharge piece. The flow control canister valve assembly is movable between an open position wherein a volume of an aerosol formulation is directed from the aerosol container through the flow control canister valve assembly to the electronically controlled flow control valve, and a closed position wherein the aerosol formulation is not permitted to flow through the flow control canister valve assembly to the electronically controlled flow control valve.

US Patent:

20180127269, May 10, 2018

Filed:

Aug 25, 2017

Appl. No.:

15/686343

Inventors:

- Austin TX, US
Joe A. Ojeda - Austin TX, US
Gengxun K. Gurley - Hutto TX, US
Joseph L. Nguyen - Austin TX, US

Assignee:

DunAn Microstaq, Inc. - Austin TX

International Classification:

B81C 1/00
B23K 35/02

Abstract:

A method of attaching a MEMS die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a MEMS die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the MEMS die to a position where the surface tensions balance, and the MEMS die is centered on, and rotationally aligned with, the solder surface of the body.