Zhenwu Lin

US Patent:

20120152865, Jun 21, 2012

Filed:

Dec 16, 2010

Appl. No.:

12/969612

Inventors:

Zhenwu Lin - Bellevue WA, US

International Classification:

B01D 37/00
B01D 33/35
B01D 35/00

US Classification:

210808, 210232, 210767

Abstract:

An apparatus and method to perform multiple filtration steps with a modular filtration apparatus and single cycle. A stackable modular filter cup has features to allow stacked cups to be separated without the need for substantial effort yet without diminishing the effect of vacuum assisted filtration. Each cup is formed with a slip seal segment and/or a series of substantially vertical channels or ridges on an inner or outer wall to reduce surface contact between nested filter cups.

US Patent:

20120223002, Sep 6, 2012

Filed:

Feb 22, 2012

Appl. No.:

13/401866

Inventors:

Zhenwu Lin - Bellevue WA, US

International Classification:

B01D 35/30
B01D 29/88

US Classification:

210232, 210444, 210418

Abstract:

Disclosed is a capsule apparatus having a filter housing defining a filter chamber with a top cap having a plurality of ports extending substantially laterally from a top end of the top cap to reduce the overall dimensions of the apparatus. The lateral and substantially uniform orientation of the ports facilitates connection to panel mount assemblies and improves filter maintenance processes. A transfer tube extending the length of the capsule allows the introduction of heated fluids from a top mounted inlet port to a bottom of the capsule chamber to allow or a substantially uniform heat gradient in the capsule filter chamber. An alternative shield secured in the housing defines a first chamber in fluid communication with an inlet and a second chamber wherein the two chambers are in fluid communication via an opening defined by a lower end of the shield and a bottom of the filter chamber.

US Patent:

20130264265, Oct 10, 2013

Filed:

Apr 6, 2012

Appl. No.:

13/441028

Inventors:

Zhenwu Lin - Pasadena CA, US

International Classification:

B01D 35/153
B01D 46/42

US Classification:

210234, 55420

Abstract:

Disclosed is a disposable filter capsule apparatus that incorporates integral quick connect components and check valves to facilitate assembly to, and dis-assembly from, larger assemblies and apparatus. The quick connect elements and valves are configured to eliminate the need for auxiliary sealing elements, e.g., o-rings and valve springs so as to prevent unwanted reactions with fluids and/or gases flowing through the capsules, and to further prevent the disposal of expensive re-usable elements in the disposable capsules.

US Patent:

20130284651, Oct 31, 2013

Filed:

Apr 30, 2012

Appl. No.:

13/460583

Inventors:

ZHENWU LIN - Pasadena CA, US

International Classification:

B01D 35/01
B01D 19/00

US Classification:

210188, 210248

Abstract:

The liquid recovery filter includes several embodiments, each of which provides for the recovery of liquid otherwise trapped within the filter housing and element. Each embodiment includes a series of vents, purge ports, and passages that communicate fluidly with the filter housing and filter core. Certain vents and purge ports are initially opened following filtration operations to allow pressurized gas to flow into the housing, thereby forcing residual unfiltered liquid through the filter. When this has been accomplished, another vent is opened to the filter core to allow filtered liquid to flow from the downstream or outlet passage from the filter core. Some embodiments have the filter outlet located above the filter, and include a downstream drain port extending from the filter core. The downstream drain port provides for the recovery of filtered liquid when the vent or purge port is opened in these embodiments.

US Patent:

20170209816, Jul 27, 2017

Filed:

Jan 25, 2017

Appl. No.:

15/415842

Inventors:

- Solon OH, US
ZhenWu Lin - Pasadena CA, US

Assignee:

Saint-Gobain Performance Plastics Corporation - Solon OH

International Classification:

B01D 29/05
B01D 46/00
B01D 46/16
B01D 35/30

Abstract:

A disposable filter cup and stem assembly with a filter disc or membrane secured between the cup and the stem. A frangible filter cup disengagement strip is formed on the filter cup about an end adjacent the stem. The filter disc or membrane is secured in the assembly in close proximity to the disengagement strip. Force applied to the disengagement strip separates the filter cup from the stem to expose the top, upstream surface of the filter disc or membrane and to permit removal of the filter disc from the assembly in an intact, substantially horizontal position. A disposable filter capsule assembly formed with a frangible filter capsule disengagement strip encloses a filter disc or membrane and permits separation of the capsule into two sections so as to expose an upstream surface of the filter disc or membrane and to permit removal of the filter disc or membrane in an intact condition after fluid processing. Disposable filter capsules with capsule halves having mated snap-fit surfaces and optional O-ring or luer lock type sealing surfaces, permit access to enclosed filter discs or membranes after fluid processing. Upon separation of the filter capsule halves, the upstream surfaces of the enclosed filter discs or membranes are exposed and the discs or membranes are accessible for removal in intact condition. O-ring free media holders constructed with weld spots permit access to enclosed free media by disengaging the weld spots after fluid processing.

US Patent:

20160346717, Dec 1, 2016

Filed:

Aug 8, 2016

Appl. No.:

15/231766

Inventors:

- Solon OH, US
ZhenWu Lin - Pasadena CA, US

Assignee:

Saint-Gobain Performance Plastics Corporation - Solon OH

International Classification:

B01D 35/153
B01D 46/00
F16L 37/42
B01D 27/10
B01D 46/54
F16L 29/00
B01D 35/15
B01D 46/42

Abstract:

Disclosed is a disposable filter capsule apparatus that incorporates integral quick connect components and check valves to facilitate assembly to, and dis-assembly from, larger assemblies and apparatus. The quick connect elements and valves are configured to eliminate the need for auxiliary sealing elements, e.g., o-rings and valve springs so as to prevent unwanted reactions with fluids and/or gases flowing through the capsules, and to further prevent the disposal of expensive re-usable elements in the disposable capsules.

US Patent:

20150352468, Dec 10, 2015

Filed:

Nov 21, 2012

Appl. No.:

13/683859

Inventors:

ZenPure Corporation - , US
Zhenwu Lin - Pasadena CA, US

Assignee:

ZenPure Corporation - Henderson NV

International Classification:

B01D 29/05
B01D 35/30
B01D 29/58

Abstract:

A filter assembly and cage and/or capsule apparatus including upstream and downstream and optional intermediary supports having modified features to maximize fluid flow through the filter assembly. The cage apparatus has a plurality of posts with stacked ridges that function as cap engaging teeth. A cage end cap is formed with a plurality of slots corresponding in configuration and position to the plurality of posts. The combination of slots and ridges interact to create a locking mechanism to adjustably secure the end cap to the cage and to generate the necessary compression to seal the enclosed filter discs and supports. The upstream supports are formed with channels in an outer ring and optional channels in radially extending ribs to improve fluid ingress and transfer to the filter discs. The downstream supports are formed with channels or tunnels in an inner ring to facilitate filtrate egress into a filter assembly outlet.

US Patent:

20150174514, Jun 25, 2015

Filed:

Dec 22, 2013

Appl. No.:

14/138091

Inventors:

ZhenWu Lin - Pasadena CA, US

International Classification:

B01D 35/30
B01D 63/00
B01D 29/01
B01D 15/10
B01D 46/54
B01D 53/04
B01D 63/14
F16L 23/06
B01D 46/52

Abstract:

An improved flanged tube assembly with insert-reinforced tube flanges to prevent tube flange deformation and leakage when subjected to high compressive forces as well as sustained high-temperature procedures. The flange inserts are configured to form the flange portion of a flanged tube, or configured to provide structural support to the portions of the flange integral to the associated tube. The inserts may be metallic or polymer based and formed with various structural features to create a mechanical lock between the insert and the material used to make the tube/flange assembly. The inserts can be incorporated into the tube flanges so as to provide the desired support without being exposed to any fluids and/or gases that may flow through the reinforced tube/flange assemblies.