Patents by Inventor Kwan Wong

Kwan Wong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6406273
    Abstract: A pressure booster and method for amplifying a water pressure that is supplied by a water facility is provided. The pressure booster is configured to be connected between the water facility and one or more semiconductor substrate cleaning systems. The pressure booster includes a pump having a pump input that connects to the water facility and a pump output that is configured to produce a fluctuating amplified water pressure that is greater than the water pressure that is supplied by the water facility. Further included is a pressure dampener having a dampener input for accepting the fluctuating amplified water pressure from the pump output. The pressure dampener is configured to partially reduce pressure fluctuations in the fluctuating amplified water pressure. The pressure dampener also has a dampener output. A pressure regulator having a regulator input for receiving the dampener output is also included as part of the pressure booster.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: June 18, 2002
    Assignee: Lam Research Corporation
    Inventor: Larry Ping-Kwan Wong
  • Patent number: 6368416
    Abstract: A method for validating pre-process adjustments to a wafer cleaning system includes the operations of (a) making pre-process adjustments to a wafer cleaning system, (b) loading a substantially transparent wafer into the wafer cleaning system, and (c) observing the substantially transparent wafer as the substantially transparent wafer moves along a wafer transfer path in the wafer cleaning system. In the event undesirable contact between the substantially transparent wafer and components of the wafer cleaning system is observed, the method further includes (d) making adjustments to the wafer cleaning system formulated to avoid undesirable contact between semiconductor wafers to be processed and components of the wafer cleaning system, and (e) repeating operations (b) through (d) until the substantially transparent wafer moves along the wafer transfer path without undesirable contact with components of the wafer cleaning system.
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: April 9, 2002
    Assignee: Lam Research Corporation
    Inventor: Larry Ping-Kwan Wong
  • Publication number: 20010043867
    Abstract: A pressure booster and method for amplifying a water pressure that is supplied by a water facility is provided. The pressure booster is configured to be connected between the water facility and one or more semiconductor substrate cleaning systems. The pressure booster includes a pump having a pump input that connects to the water facility and a pump output that is configured to produce a fluctuating amplified water pressure that is greater than the water pressure that is supplied by the water facility. Further included is a pressure dampener having a dampener input for accepting the fluctuating amplified water pressure from the pump output. The pressure dampener is configured to partially reduce pressure fluctuations in the fluctuating amplified water pressure. The pressure dampener also has a dampener output. A pressure regulator having a regulator input for receiving the dampener output is also included as part of the pressure booster.
    Type: Application
    Filed: May 18, 2001
    Publication date: November 22, 2001
    Inventor: Larry Ping-Kwan Wong
  • Patent number: 6267142
    Abstract: A solution delivery system for use with a wafer preparation system is provided. The solution deliver system includes a de-ionized water (DIW) dispense drawer having an input for receiving an initial flow of DIW from a facility water supply. The DIW dispense drawer further includes a first pressure regulator for stabilizing the initial flow of DIW and producing a substantially steady flow of DIW as a DIW output of the DIW dispense drawer. A chemical drawer is also provided as part of the solution delivery system. The chemical drawer is configured to receive the substantially steady flow of DIW from the DIW dispense drawer. The chemical drawer is further configured to receive an initial flow of chemicals from a chemical source. The chemical drawer also includes a second pressure regulator for stabilizing the initial flow of chemicals from the chemical source and thus producing a substantially steady flow of chemicals.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: July 31, 2001
    Assignee: Lam Research Corporation
    Inventors: Larry Ping-Kwan Wong, John Martin deLarios
  • Publication number: 20010007001
    Abstract: The present invention relates to reaction products formed from maleic anhydride and amino carboxylic acids. The reaction products are particularly useful for grafting polyolefins to increase their polarity and therefore enhance their physical properties.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 5, 2001
    Inventors: Manuel Soler Rodriguez, Charles Chiu-Hsiung Hwo, Pui Kwan Wong, Pierre Nazareth Tutunjian, Charles Lee Edwards
  • Patent number: 6247903
    Abstract: A pressure booster and method for amplifying a water pressure that is supplied by water facility is provided. The pressure booster is configured to be connected between he water facility and one or more semiconductor substrate cleaning systems. The pressure booster includes a pump having a pump input that connects to the water facility and a pump output that is configured to produce a fluctuating amplified water pressure that is greater than the water pressure that is supplied by the water facility. Further included is a pressure dampener having a dampener input for accepting the fluctuating amplified water pressure from the pump output. The pressure dampener is configured to partially reduce pressure fluctuations in the fluctuating amplified water pressure. The pressure dampener also has a dampener output. A pressure regulator having a regulator input for receiving the dampener output is also included as part of the pressure booster.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: June 19, 2001
    Assignee: Lam Research Corporation
    Inventor: Larry Ping-Kwan Wong
  • Patent number: 6231960
    Abstract: Biodegradable and/or compostable polymers are made from isoprene, 2,3-dimethyl-1,3-butadiene or like conjugated dienes and a crosslinking agent having a cleavable linking group such as ethylene glycol dimethacrylate. These polymers can be used to make absorbent foams that are useful in absorbent articles such as diapers, as well as other biodegradable articles such as films, and latexes useful as binders and adhesives.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: May 15, 2001
    Assignee: The Procter & Gamble Company
    Inventors: John C. Dyer, Bryn Hird, Pui Kwan Wong
  • Patent number: 6225419
    Abstract: An grafted polymeric amine is provided, the grafted polymeric amine including: N-substituted 2,5-pyrrolediyl groups incorporated in the backbone wherein the N-substituted 2,5-pyrrolediyl group may be represented by the general formula wherein R independently represents a hydrogen or a hydrocarbyl group and B represents the substituent containing at least one primary amino group; and vinyl monomers grafted to a polyketone backbone. This grafted polymeric amine is useful as a component in a wood glue composition.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: May 1, 2001
    Assignee: Shell Oil Company
    Inventor: Pui-Kwan Wong
  • Patent number: 6221967
    Abstract: The present invention relates to reaction products formed from maleic anhydride and amino carboxylic acids. The reaction products are particularly useful for grafting polyolefins to increase their polarity and therefore enhance their physical properties.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: April 24, 2001
    Assignee: Shell Oil Company
    Inventors: Manuel Soler Rodriguez, Charles Chiu-Hsiung Hwo, Pui Kwan Wong, Pierre Nazareth Tutunjian, Charles Lee Edwards
  • Patent number: 6217702
    Abstract: Relatively low molecular weight olefin/CO polymers are graft copolymerized. The graft copolymers provide the basis for waterborne adhesives that are particularly useful for making wood composites.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: April 17, 2001
    Assignee: Shell Oil Company
    Inventor: Pui Kwan Wong
  • Patent number: 6214941
    Abstract: A functionalized polyketone and a method to make this functionalized polyketone is provided, the method including the steps of: providing a polyketone; contacting the polyketone with a functional group containing monomer, the functional group containing monomer having a double bond between two carbons, at a temperature between about 180° C. and 275° C., for a time period effective for at least 10% by weight of the resultant grafted polymer to be grafted monomer units; and recovering the grafted polyketone.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: April 10, 2001
    Assignee: Shell Oil Company
    Inventor: Pui-Kwan Wong
  • Patent number: 6201075
    Abstract: Relatively low molecular weight olefin/CO polymers are graft copolymerized. The graft copolymers provide the basis for waterborne adhesives that are particularly useful for making wood composites.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: March 13, 2001
    Assignee: Shell Oil Company
    Inventor: Pui Kwan Wong
  • Patent number: 6147141
    Abstract: A novel thermally reworkable die attach adhesive composition for attaching a semiconductor device to a substrate is provided. The composition comprises(a) a thermally reworkable crosslinked resin produced by reacting at least one dienophile having a functionality greater than one and at least one 2,5-dialkyl substituted furan-containing polymer, and(b) at least one thermally and/or electrically conductive material present in an effective amount up to about 90% by weight of the die attach composition to provide a conducting medium.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: November 14, 2000
    Assignee: Shell Oil Company
    Inventors: Shridhar R. Iyer, Pui Kwan Wong
  • Patent number: 6133356
    Abstract: Relatively low molecular weight olefin/CO polymers are graft copolymerized. The graft copolymers provide the basis for waterborne adhesives that are particularly useful for making wood composites.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: October 17, 2000
    Assignee: Shell Oil Company
    Inventor: Pui Kwan Wong
  • Patent number: 6114588
    Abstract: A method to produce dialcohols is provided, the method comprising the steps of:providing a feed stream comprising an alpha-alcohol-diolefin;reacting the feed stream with hydrogen and carbon monoxide in the presence of a catalyst system comprising a cobalt phosphine ligand complex under conditions effective to hydroformylate at least a portion of the diolefin in the feed stream; andrecovering the dialcohol from the reacted feed stream. This method is a one-step process to hydroformylate alpha-alcohol-diolefins such as 2,7-octadien-1-ol to produce a significant yield of dialcohols such as 1,9-nonanediol.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: September 5, 2000
    Assignee: Shell Oil Company
    Inventors: Pui-Kwan Wong, Andrew Allison Moxey
  • Patent number: 6105167
    Abstract: A buoyancy aid wearable as a swimming cap in its uninflated condition and usable as a buoyancy aid in an inflated condition including a cap defining means configurable in its to be worn condition preferably to have one part thereof within another part thereof, the cap defining means including at least one inflatable chamber. An inflation unit is preferably carried by the cap defining means and is actuable to inflate the inflatable chamber(s). The outcome upon actuation of the inflation unit will be or is, should the inflated condition be achieved, that the inflatable chamber(s) configures (configure) the cap defining means to a form no longer wearable as a cap and with the one part no longer within the another part. The cap defining means when in its fully inflated form preferably has a configuration that is substantially that of an unshelled peanut therefor, with a waisted region. The inflation unit preferably uses a gas reservoir capable of releasing gas under pressure.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: August 22, 2000
    Inventor: Man Kwan Wong
  • Patent number: 6103645
    Abstract: A method is provided to prepare a filter material, the method comprising the steps of: providing a porous substrate; preparing a high internal phase emulsion wherein the external phase of the emulsion comprises polymerizable monomers, and the internal phase is a non-polymerizable phase; impregnating the high internal phase emulsion into the substrate felt; and polymerizing the polymerizable monomers. A layer of cured foam as is thereby formed on the substrate and within pore volumes of the substrate. The cured foam can have a high porosity, small pore size, and low density, resulting in a filter material having a high efficiency in removal of particles, at a lower pressure drop than alternative high efficiency filter materials.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: August 15, 2000
    Assignee: Shell Oil Company
    Inventors: Benjamin Tai An Chang, Pui Kwan Wong, Troug Van Mai
  • Patent number: 5973174
    Abstract: A method is provided to prepare a cationic transition metal catalyst, the method including the steps of: providing a disubstituted phosphine selected from the group consisting of RPH and R.sub.1 R.sub.2 PH wherein R is a divalent group selected from substituted and nonsubstituted hydrocarbon groups, R.sub.1 and R.sub.2 are independently selected from substituted and nonsubstituted hydrocarbon groups; combining the disubstituted phosphine with a salt of the formula R.sub.3 X.sub.n wherein X is a good leaving group and is a weakly coordinating anion and R.sub.3 is a substituted or nonsubstituted aliphatic hydrocarbon and n is 1, 2, or 3 to form a phosphonium salt of a formula selected from R.sub.3 (RP.sup.+ H).sub.n nX.sup.- and R.sub.3 (R.sub.1 R.sub.2 P.sup.+ H).sub.n nX.sup.- ; and combining the phosphonium salt with a transition metal salt of the formula MY.sub.m wherein M is a transition metal, and Y is the anion of a weak acid thereby forming a cationic transition metal catalyst.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: October 26, 1999
    Assignee: Shell Oil Company
    Inventors: Pui Kwan Wong, Manuel Soler Rodriguez, Andrew Allison Moxey
  • Patent number: 5973052
    Abstract: A novel thermally reworkable die attach adhesive composition for attaching a semiconductor device to a substrate is provided. The composition comprises(a) a thermally reworkable crosslinked resin produced by reacting at least one dienophile having a functionality greater than one and at least one 2,5-dialkyl substituted furan-containing polymer, and(b) at least one thermally and/or electrically conductive material present in an effective amount up to about 90% by weight of the die attach composition to provide a conducting medium.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: October 26, 1999
    Assignee: Shell Oil Company
    Inventors: Shridhar R. Iyer, Pui Kwan Wong
  • Patent number: 5963708
    Abstract: A heating system for baseboard location has a chamber partly filled with liquid and sealed for holding a vacuum. A heater in the chamber heats the liquid into vapor to heat the chamber. First and second heat exchange plates extend annularly and substantially horizontally about the chamber with inner peripheries in heat-conducting contact with the chamber. The first heat exchange plate has at least one airflow hole therethrough on one side of the chamber and the second heat exchange plate has at least one air-flow hole therethrough on another side of the chamber. A space between the first and the second heat exchange plates is enclosed at the outer peripheries of the plates.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: October 5, 1999
    Assignee: Well Men Industrial Co., Ltd.
    Inventor: Man Kwan Wong