Patents by Inventor Pui Ho

Pui Ho 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: 8169617
    Abstract: There is disclosed a phase sensitive surface plasmon resonance sensing apparatus wherein a testing beam may be reflected from a sensing surface at a plurality of angles. There are also disclosed methods for surface plasmon resonance sensing.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: May 1, 2012
    Assignee: The Chinese University of Hong Kong
    Inventors: Ho Pui Ho, Siu Kai Kong, Yick Keung Suen, Kwong Chun Lo, Shu Yeun Wu, Wing Wai Wong
  • Publication number: 20120093777
    Abstract: A composition is disclosed comprising virus in a formulation comprising a polyhydroxy hydrocarbon buffered to maintain a pH in a range from about 7 to about 8.5 at a temperature in the range from about 2° C. to 27° C. Methods for concentrating and purifying virus preparations are also disclosed.
    Type: Application
    Filed: December 22, 2011
    Publication date: April 19, 2012
    Inventors: Andreas Frei, Henry K.H. Kwan, Varda E. Sandweiss, Gary J. Vellekamp, Pui-Ho Yuen, Laureano L. Bondoc, JR., Frederick William Porter, IV, John Chu-Tay Tang, Peter Ihnat
  • Publication number: 20110292394
    Abstract: Disclosed are optical sensing devices and methods for detecting samples using the same. The optical sensing device comprises a source unit configured to generate a polychromatic light beam containing p-polarized and s-polarized components; an interferometric unit configured to split the light beam into a probe beam passing a first path and a reference beam passing a second path and to recombine the probe beam output from the first path and the reference beam output from the second path; a sensing unit disposed in the first path to introduce a first SPR effect associated with a target sample to the probe beam; and a detection unit configured to detect target sample characteristics by obtaining an intensity spectrum of the recombined light beam. The introduction of a polychromatic light source in the optical sensing device increases the detection dynamic range and the detection sensitivity.
    Type: Application
    Filed: May 23, 2011
    Publication date: December 1, 2011
    Applicants: THE CHINESE UNIVERSITY OF HONG KONG, CITY UNIVERSITY OF HONG KONG
    Inventors: Lawrence Chi-man Wu, Siu pang Ng, Ho Pui Ho, Shu Yuen Wu
  • Patent number: 7892855
    Abstract: Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to provide a reference signal; a SPR sensing unit receiving a second part of the light to induce a phase retardation change between the p- and s-polarization components due to SPR associated with a sample; a probe unit receiving the light after SPR to provide a probe signal; and a detection unit connected to the reference unit and the probe unit to detect characteristics of the sample by comparing the reference signal with the probe signal. By using active phase modulation technologies and differential phase measurement, it is possible to fulfill chemical and biological detection.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: February 22, 2011
    Assignee: The Chinese University of Hong Kong
    Inventors: Ho Pui Ho, Shu Yuen Wu, Chinlon Lin, Siu Kai Kong
  • Patent number: 7868016
    Abstract: A pharmaceutical formulation suitable for multi-dose administration comprising endo-N-(9-methyl-9-azabicyclo[3.3.1]non-3-yl)-1-methyl-1H-indazole-3-carboxanide hydrochloride, a preservative selected from the group consisting of alkyl paraben and phenol, and a buffer selected from the group consisting of acetate and phosphate buffers is disclosed.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: January 11, 2011
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Kiran Pal Singh, Pui-Ho Yuen
  • Patent number: 7623246
    Abstract: Disclosed is an optical sensing device, which comprises a light source emitting a light; a beam splitter; an SPR sensor unit comprising a sensing surface; and a detecting mechanism; and a converting unit converting the first beam and the second beam from the optical device into a two-dimensional interference fringe pattern. From the above-mentioned configuration, an extra phase shift of a detection beam in SPR phase measurement is obtained. The differential measurement approach has shown to achieve a sensitivity figure significantly better than the best result that can be obtained from the prior art in the field of the measurement based on an SPR sensor.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: November 24, 2009
    Assignee: The Chinese University of Hong Kong
    Inventors: Ho Pui Ho, Chi Lok Wong, Shu Yuen Wu, Wing Cheung Law, Chinlon Lin, Siu Kai Kong
  • Publication number: 20090251707
    Abstract: There is disclosed a phase sensitive surface plasmon resonance sensing apparatus wherein a testing beam may be reflected from a sensing surface at a plurality of angles. There are also disclosed methods for surface plasmon resonance sensing.
    Type: Application
    Filed: March 20, 2009
    Publication date: October 8, 2009
    Applicant: The Chinese University on Hong Kong
    Inventors: Ho Pui Ho, Siu Kai Kong, Yick Keung Suen, Kwong Chun Lo, Shu Yeun Wu, Wing Wai Wong
  • Publication number: 20090098632
    Abstract: A composition is disclosed comprising virus in a formulation comprising a polyhydroxy hydrocarbon buffered to maintain a pH in a range from about 7 to about 8.5 at a temperature in the range from about 2° C. to 27° C. Methods for concentrating and purifying virus preparations are also disclosed.
    Type: Application
    Filed: April 4, 2008
    Publication date: April 16, 2009
    Applicant: Schering Corporation
    Inventors: Andreas Frei, Henry K.H. Kwan, Varda E. Sandweiss, Gary J. Vellekamp, Pui-Ho Yuen, Laureano L. Bondoc, JR., Frederick William Porter, IV, John Chu-Tay Tang, Peter Ihnat
  • Publication number: 20090086210
    Abstract: Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to provide a reference signal; a SPR sensing unit receiving a second part of the light to induce a phase retardation change between the p- and s-polarization components due to SPR associated with a sample; a probe unit receiving the light after SPR to provide a probe signal; and a detection unit connected to the reference unit and the probe unit to detect characteristics of the sample by comparing the reference signal with the probe signal. By using active phase modulation technologies and differential phase measurement, it is possible to fulfill chemical and biological detection.
    Type: Application
    Filed: August 4, 2008
    Publication date: April 2, 2009
    Applicant: The Chinese University of Hong Kong
    Inventors: Ho Pui Ho, Shu Yuen Wu, Chinlon Lin, Siu Kai Kong
  • Patent number: 7477051
    Abstract: A position sensor includes a first part having several electrically conductive elements, a second part having an electrical conductor, and holding device holding the first part and the second part together with the conductive elements and the conductor being spaced apart and permitting relative movement between the conductive elements and the conductor. Included is a signal generator for generating and supplying different electrical signals to one of the first part and the second part for reception in a contactless manner by the other of the first part and the second part with a magnitude that is dependent upon the relative position between the conductive elements and the conductor. There is also a signal detector connected to the other of the first part and the second part for differentiating the electrical signals received thereby to determine the relative position between the conductive elements and the conductor.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: January 13, 2009
    Assignee: Mosway Semiconductor Limited
    Inventors: Celement Chiu Sing Tse, Chi Keung Tang, Kenny Chi Ken Lee, Peter On Bon Chan, Chun Ching Lee, Chi Pui Ho
  • Publication number: 20080304072
    Abstract: Disclosed is an optical sensing device, which comprises a light source emitting a light; a beam splitter; an SPR sensor unit comprising a sensing surface; and a detecting mechanism; and a converting unit converting the first beam and the second beam from the optical device into a two-dimensional interference fringe pattern. From the above-mentioned configuration, an extra phase shift of a detection beam in SPR phase measurement is obtained. The differential measurement approach has shown to achieve a sensitivity figure significantly better than the best result that can be obtained from the prior art in the field of the measurement based on an SPR sensor.
    Type: Application
    Filed: March 11, 2008
    Publication date: December 11, 2008
    Applicant: The Chinese University of Hong Kong
    Inventors: Ho Pui Ho, Chi Lok Wong, Shu Yuen Wu, Wing Cheung Law, Chinlon Lin, Sui Kai Kong
  • Publication number: 20080293123
    Abstract: A composition is disclosed comprising virus in a formulation comprising a polyhydroxy hydrocarbon buffered to maintain a pH in a range from about 7 to about 8.5 at a temperature in the range from about 2° C. to 27° C. Methods for concentrating and purifying virus preparations are also disclosed.
    Type: Application
    Filed: August 7, 2008
    Publication date: November 27, 2008
    Applicant: Schering Corporation
    Inventors: Andreas Frei, Henry K.H. Kwan, Varda E. Sandweiss, Gary J. Vellekamp, Pui-Ho Yuen, Laureano L. Bondoc, JR., Frederick William Porter, IV, John Chu-Tay Tang, Peter Ihnat
  • Publication number: 20080261289
    Abstract: A composition is disclosed comprising virus in a formulation comprising a polyhydroxy hydrocarbon buffered to maintain a pH in a range from about 7 to about 8.5 at a temperature in the range from about 2° C. to 27° C. Methods for concentrating and purifying virus preparations are also disclosed.
    Type: Application
    Filed: June 26, 2008
    Publication date: October 23, 2008
    Applicant: Schering-Plough Corporation
    Inventors: Andreas Frei, Henry K.H. Kwan, Varda E. Sandweiss, Gary J. Vellkamp, Pui-Ho Yuen, Laureano L. Bondoc, Frederick William Porter, John Chu-Tay Tang, Peter Ihnat
  • Publication number: 20080194002
    Abstract: A composition is disclosed comprising virus in a formulation comprising a polyhydroxy hydrocarbon buffered to maintain a pH in a range from about 7 to about 8.5 at a temperature in the range from about 2° C. to 27° C. Methods for concentrating and purifying virus preparations are also disclosed.
    Type: Application
    Filed: April 14, 2008
    Publication date: August 14, 2008
    Applicant: Canji, Inc.
    Inventors: Andreas Frei, Henry K.H. Kwan, Varda E. Sandweiss, Gary J. Vellekamp, Pui-Ho Yuen, Laureano L. Bondoc, Frederick William Porter, John Chu-Tay Tang, Peter Ihnat
  • Patent number: 7407817
    Abstract: Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to provide a reference signal; a SPR sensing unit receiving a second part of the light to induce a phase retardation change between the p- and s-polarization components due to SPR associated with a sample; a probe unit receiving the light after SPR to provide a probe signal; and a detection unit connected to the reference unit and the probe unit to detect characteristics of the sample by comparing the reference signal with the probe signal. By using active phase modulation technologies and differential phase measurement, it is possible to fulfill chemical and biological detection.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: August 5, 2008
    Assignee: The Chinese University of Hong Kong
    Inventors: Ho Pui Ho, Shu Yuen Wu, Chinlon Lin, Siu Kai Kong
  • Publication number: 20080138318
    Abstract: A composition is disclosed comprising virus in a formulation comprising a polyhydroxy hydrocarbon buffered to maintain a pH in a range from about 7 to about 8.5 at a temperature in the range from about 20° C. to 27° C. Methods for concentrating and purifying virus preparations are also disclosed.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 12, 2008
    Inventors: Andreas Frei, Henry K.H. Kwan, Varda E. Sandweiss, Gary J. Vellekamp, Pui-Ho Yuen, Laureano L. Bondoc, Frederick William Porter, John Chu-Tay Tang, Peter Ihnat
  • Publication number: 20080132465
    Abstract: A method and apparatus for isolating iron components in serum is provided. The method includes passing a serum sample through a separation column having a solid phase and retaining with the solid phase an iron component, such as an iron carbohydrate, in the column. Elution of the solid phase may retrieve an eluate containing the iron component. The amount of iron component present in the eluate may then be measured. The present method and apparatus advantageously permit the direct measurement of the iron component present in the serum.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 5, 2008
    Inventors: Vincent Windisch, Pui-Ho Yuen, Jing Jun Huang, Jingzhen Xu
  • Patent number: 7365855
    Abstract: Disclosed is an optical sensing device, which comprises a light source emitting a light; a beam splitter; an SPR sensor unit comprising a sensing surface; and a detecting mechanism; and a converting unit converting the first beam and the second beam from the optical device into a two-dimensional interference fringe pattern. From the above-mentioned configuration, an extra phase shift of a detection beam in SPR phase measurement is obtained. The differential measurement approach has shown to achieve a sensitivity figure significantly better than the best result that can be obtained from the prior art in the field of the measurement based on an SPR sensor.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: April 29, 2008
    Assignee: The Chinese University of Hong Kong
    Inventors: Ho Pui Ho, Chi Lok Wong, Shu Yuen Wu, Wing Cheung Law, Chinlon Lin, Siu Kai Kong
  • Publication number: 20080092948
    Abstract: Method and structure for hydrogenation of silicon substrates with shaped covers. According to an embodiment, the present invention provides a method for fabricating a photovoltaic material. The method includes providing a semiconductor substrate. The method also includes forming a crystalline material characterized by a plurality of worm hole structures therein overlying the semiconductor substrate. The worm hole structures are characterized by a density distribution from a surface region of the crystalline material to a defined depth within a z-direction of the surface region to form a thickness of material to be detached. The method further includes providing a glue layer overlying a surface region of the crystalline material. The method includes joining the surface region of the crystalline material via the glue layer to a support substrate.
    Type: Application
    Filed: September 10, 2007
    Publication date: April 24, 2008
    Applicant: Silicon China Limited
    Inventors: Yick Chan, Pui Ho, Nathan Cheung, Man Wong, Chung Chan
  • Publication number: 20080085545
    Abstract: A composition is disclosed comprising virus in a formulation comprising a polyhydroxy hydrocarbon buffered to maintain a pH in a range from about 7 to about 8.5 at a temperature in the range from about 2° C. to 27° C. Methods for concentrating and purifying virus preparations are also disclosed.
    Type: Application
    Filed: October 24, 2007
    Publication date: April 10, 2008
    Applicant: Schering Corporation
    Inventors: Andreas Frei, Henry Kwan, Varda Sandweiss, Gary Vellekamp, Pui-Ho Yuen, Laureano Bondoc, Fredrick Porter, John Tang, Peter Ihnat