Patents by Inventor Albert Chan

Albert Chan 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).

  • Publication number: 20060084615
    Abstract: The present invention provides acetylated derivatives of the compound puerarin that have enhanced bioavailability and are particularly suitable for oral administration. The present invention also teaches the use of medicaments containing acetylated derivatives of puerarin that are suitable for the treatment of myocardial ischemia and for modulating blood lipid levels, dilating coronary and cerebral arteries, reducing oxygen consumption of cardiomyocytes, improving microcirculation and preventing aggregation of blood platelets.
    Type: Application
    Filed: October 20, 2004
    Publication date: April 20, 2006
    Inventors: Albert Chan, Shi Chen, Yueming Li, Dajian Yang
  • Publication number: 20060045927
    Abstract: The present invention concerns herbal formulations for the modification of the levels of blood lipids. Aspects of the invention include the preparation of herbal formulations and methods for their use.
    Type: Application
    Filed: August 25, 2004
    Publication date: March 2, 2006
    Inventors: Dajian Yang, Meng Huang, Shi Chen, Albert Chan
  • Patent number: 6948999
    Abstract: A “magic mirror” wand toy has a body having a mirror element that is partially transparent. An image illuminating apparatus is mounted rearward of the mirror element. An image transport apparatus has a plurality of images that can be positioned selectively and alternately in front of the illuminating apparatus. When an image is stationary, it is lit up and an audible message associated with the image may be played. The wand can be operated in sampling mode, in which each of the set of images is displayed in sequence, and in an individual selection mode.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: September 27, 2005
    Assignee: Thinking Technology Inc.
    Inventor: Albert Chan
  • Patent number: 6903573
    Abstract: A programmable device with logic blocks is configured to cascade product terms from one logic block to another to increase the logical input width of the product terms. Each logic block may produce a plurality of product terms based upon the selection of inputs from a routing structure. Logic blocks configured to receive cascaded product terms includes a plurality of AND gates corresponding to the plurality of product terms.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: June 7, 2005
    Assignee: Lattice Semiconductor Corporation
    Inventors: Jason Cheng, Cyrus Tsui, Satwant Singh, Albert Chan, Ju Shen, Clement Lee
  • Publication number: 20050056365
    Abstract: A thermally conductive interface adhesive for attaching an electronic component, such as an integrated circuit chip, to a heat receiving substrate, such as a heat spreader, is disclosed. The interface adhesive comprises a mixture of solder powder, flux and a curable polymer, such as an epoxy, which form a paste. Preferably, the interface adhesive further comprises particles of a metallic filler material, such as silver or copper. Preferably, the solder has a relatively low melting point, and the polymer is thermosetting. After the adhesive paste is applied it is processed by heating it to melt the solder after which the polymer is cured, such that a metallic network is formed within the adhesive layer. The cured adhesive layer has a thermal conductivity of about 15 W/m-K or more.
    Type: Application
    Filed: September 15, 2003
    Publication date: March 17, 2005
    Inventor: Albert Chan
  • Publication number: 20050044761
    Abstract: A flag that tells what a queue line is for, and signals the end of the line, by being passed from person to person down to the last person in line.
    Type: Application
    Filed: August 29, 2003
    Publication date: March 3, 2005
    Inventor: Albert Chan
  • Publication number: 20050014633
    Abstract: The present invention provides compounds of the formula wherein R is optionally substituted lower alkyl, cycloalkyl or aryl; R? is alkyl or aryl; n is zero or an integer of 1 or 2; or an enantiomer thereof; or an enantiomeric mixture thereof. The compounds of formula (I) are bridged C2-symmetric biphenyldiphosphine analogs and, thus, may be employed as ligands to generate chiral transition metal catalysts which may be applied in a variety of asymmetric reactions. The compounds of the present invention are easily accessible in high diastereomeric and optical purity according to the methods disclosed herein.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 20, 2005
    Inventors: Albert Chan, Liqin Qiu
  • Publication number: 20040209544
    Abstract: A “magic mirror” wand toy has a body having a mirror element that is partially transparent. An image illuminating apparatus is mounted rearward of the mirror element. An image transport apparatus has a plurality of images that can be positioned selectively and alternately in front of the illuminating apparatus. When an image is stationary, it is lit up and an audible message associated with the image may be played. The wand can be operated in sampling mode, in which each of the set of images is displayed in sequence, and in an individual selection mode.
    Type: Application
    Filed: August 30, 2002
    Publication date: October 21, 2004
    Applicant: Thinkway Toys
    Inventor: Albert Chan
  • Patent number: 6793798
    Abstract: This invention relates to radioactively coated devices, preferably radioactively coated medical devices. These coated devices are characterized as having a low rate of leaching of the radioisotope from the surface of the coated device and a uniform radioactive coating, and are therefore suitable for use within biological systems. Methods for coating a device with a radioisotope comprising are also disclosed. One method comprises immersing the device within a solution containing a &Ugr;, &bgr;+, &agr;, &bgr;− or &egr; (electron capture) emitting radioisotope, then exposing the immersed substrate to tuned vibrational cavitation to produce a coated substrate. A second method involves coating a substrate using electroless plating, and yet a third method involves the use of electroplating a radioisotope onto a substrate of interest. With these methods, the coating procedures are followed by baking the coated substrate at a temperature below the recrystallization temperature of the substrate.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: September 21, 2004
    Assignee: MDS Inc.
    Inventors: Albert Chan, Stephen M. Oelsner, Thomas J. Simpson
  • Patent number: 6676988
    Abstract: This invention relates to radioactively coated devices, preferably radioctively coated medical devices. These coated devices are characterized as having a low rate of leaching of the radioisotope from the surface of the coated device and a uniform radioactive coating, and are therefore suitable for use within biological systems. Methods for coating a device with a radioisotope comprising are also disclosed. One method comprises immersing the device within a solution containing a &ggr;, &bgr;+, &agr;, &bgr;− or &egr; (electron capture) emitting radioisotope, then exposing the immersed substrate to tuned vibrational cavitation to produce a coated substrate. A second method involves coating a substrate using electroless plating, and yet a third method involves the use of electroplating a radioisotope onto a substate of interest. With these methods, the coating procedures are followed by baking the coated substrate at a temperature below the recrystallization temperature of the substrate.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: January 13, 2004
    Assignee: MDS (Canada) Inc.
    Inventors: Albert Chan, Stephen M. Oelsner, Thomas J. Simpson, Sonia Corrent
  • Publication number: 20040001564
    Abstract: A system employs space-time coding characterized at the transmitter by bit-interleaved coded modulation (BICM) combined with modulating several streams of the BICM encoded data for transmission over two or more antennas. Space-time coding techniques improve transmission efficiency in radio channels by using multiple transmit and/or receive antennas and coordination of the signaling over these antennas. Bit-interleaved coded modulation provides good diversity gain with higher-order modulation schemes that employ binary convolutional codes. A receiver demodulates the received signals and applies multi-input, multi-output (MIMO) demapping to estimate the BICM encoded bitstream. After deinterleaving of the BICM encoded bitstream, maximum a posteriori (MAP) decoding is applied to the resulting bit stream to generate soft output values. By applying well-known turbo-decoding principles to iteratively demap and decode, the overall receiver performance is significantly improved.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 1, 2004
    Inventors: Albert Chan, Inkyu Lee, Carl-Erik Wilhelm Sundberg
  • Publication number: 20040000928
    Abstract: A programmable device and method with generic logic blocks. Each generic logic block is configurable to perform product term logic functions and memory functions, such as RAM, dual-port RAM, ROM, CAM, FIFO and switch.
    Type: Application
    Filed: April 26, 2002
    Publication date: January 1, 2004
    Applicant: Lattice Semiconductor Corporation
    Inventors: Jason Cheng, Cyrus Tsui, Satwant Singh, Albert Chan, Ju Shen, Clement Lee
  • Publication number: 20030235149
    Abstract: A system employs space-time coding characterized at the transmitter by bit-interleaved coded modulation (BICM) combined with multi-carrier Orthogonal Frequency Division Multiplexing (OFDM) modulation. Space-Time coding techniques improve transmission efficiency in radio channels by using multiple transmit and/or receive antennas and coordination of the signaling over these antennas. Bit-interleaved coded modulation provides good diversity gain with higher-order modulation schemes that employ binary convolutional codes. OFDM modulation allows for wideband transmission over frequency selective radio channels. A receiver demodulates the OFDM signal and applies multi-input, multi-output (MIMO) demapping to estimate the BICM encoded bitstream. After deinterleaving of the BICM encoded bitstream, maximum a posteriori (MAP) decoding is applied to the resulting bit stream to generate soft output values.
    Type: Application
    Filed: June 24, 2002
    Publication date: December 25, 2003
    Inventors: Albert Chan, Inkyu Lee, Carl-Erik Wilhelm Sundberg
  • Patent number: 6638205
    Abstract: The present invention discloses a radioactive medical device comprising a radioactive, electroplated substrate coated with at least one layer of polymer and sealed in a jacket layer. The at least one layer of polymer and jacket layer reduce leaching of a radioactive element from the electroplated substrate. The radioactive medical device is useful for radiation therapy of diseased tissue such as cancers and especially malignant tumors.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: October 28, 2003
    Assignee: MDS (Canada) Inc.
    Inventors: Albert Chan, Corinne Bensimon
  • Publication number: 20020169353
    Abstract: This invention relates to radioactively coated devices, preferably radioctively coated medical devices. These coated devices are characterized as having a low rate of leaching of the radioisotope from the surface of the coated device and a uniform radioactive coating, and are therefore suitable for use within biological systems. Methods for coating a device with a radioisotope comprising are also disclosed. One method comprises immersing the device within a solution containing a &ggr;, &bgr;+, &agr;, &bgr;− or &egr; (electron capture) emitting radioisotope, then exposing the immersed substrate to tuned vibrational cavitation to produce a coated substrate. A second method involves coating a substrate using electroless plating, and yet a third method involves the use of electroplating a radioisotope onto a substate of interest. With these methods, the coating procedures are followed by baking the coated substrate at a temperature below the recrystallization temperature of the substrate.
    Type: Application
    Filed: December 14, 2001
    Publication date: November 14, 2002
    Applicant: MDS Nordion Inc.
    Inventors: Albert Chan, Stephen M. Oelsner, Thomas J. Simpson, Sonia Corrent
  • Patent number: 6462576
    Abstract: An improved programmable logic device includes a set of I/O cells, a set of logic blocks, and a routing pool that provides connections among the logic blocks and the I/O cells. At least one of the logic blocks includes a programmable logic array that generates product term output signals on product term output lines. A first product term summing circuit has input terminals, at least one of which is coupled to a product term output line. The first product term summing circuit generates an output signal at an output terminal in response to at least one product term output signal. Likewise, a second product term summing circuit has input terminals, at least one of which is coupled to a product term output line. The second product term summing circuit generates an output signal at an output terminal in response to at least one product term output signal.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: October 8, 2002
    Assignee: Lattice Semiconductor Corporation
    Inventors: Albert Chan, Ju Shen, Cyrus Y. Tsui, Rafael C. Camarota
  • Publication number: 20020143228
    Abstract: This invention relates to radioactively coated devices, preferably radioactively coated medical devices. These coated devices are characterized as having a low rate of leaching of the radioisotope from the surface of the coated device and a uniform radioactive coating, and are therefore suitable for use within biological systems. Methods for coating a device with a radioisotope comprising are also disclosed. One method comprises immersing the device within a solution containing a &Ugr;, &bgr;+, &agr;,&bgr;− For &egr; (electron capture) emitting radioisotope, then exposing the immersed substrate to tuned vibrational cavitation to produce a coated substrate. A second method involves coating a substrate using electroless plating, and yet a third method involves the use of electroplating a radioisotope onto a substrate of interest. With these methods, the coating procedures are followed by baking the coated substrate at a temperature below the recrystallization temperature of the substrate.
    Type: Application
    Filed: February 28, 2002
    Publication date: October 3, 2002
    Inventors: Albert Chan, Stephen M. Oelsner, Thomas J. Simpson
  • Patent number: 6394945
    Abstract: This invention relates to radioactively coated devices, preferably radioactively coated medical devices. These coated devices are characterized as having a low rate of leaching of the radioisotope from the surface of the coated device and a uniform radioactive coating, and are therefore suitable for use within biological systems. Coated medical devices are disclosed that are produced either by immersing the device within a solution containing a &ggr;, &bgr;+, &agr;, &bgr;−, &Egr; (electron capture) emitting radioisotope, then exposing the immersed substrate to tuned vibrational cavitation, by electroless plating, or by electroplating a radioisotope onto a substrate of interest. The medical devices so produced are then baked at a temperature below the recrystallization temperature of the medical device.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: May 28, 2002
    Assignee: MDS (Canada), Inc.
    Inventors: Albert Chan, Stephen M. Oelsner, Thomas J. Simpson
  • Patent number: 6389321
    Abstract: An in-system programmable (ISP) system can be programmed by remote access from a host programming system. The remote access can be accomplished over a wired data network, a wireless data network, a radio channel, or any combination of the above. In the ISP system, an ISP controller receives control and programming data through the access interface to program ISP devices in accordance with ISP programming conventions. The ISP controller can be provided by an integrated circuit having a microprocessor core.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: May 14, 2002
    Assignee: Lattice Semiconductor Corporation
    Inventors: Howard S. Tang, Albert Chan, Cyrus Y. Tsui
  • Patent number: 6356107
    Abstract: An input/output circuit in an In-system programmable (ISP) logic device allows an output signal from a boundary scan register to be provided as output during programming operations of said ISP logic device. Thus, the ISP logic circuit can provide valid data output to other circuits interfaced to the ISP logic circuit during programming of the ISP logic device, thereby obviating a need to reset the system after reprogramming of the ISP logic device.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: March 12, 2002
    Assignee: Lattice Semiconductor Corporation
    Inventors: Howard Y. M. Tang, Albert Chan, Cyrus Y. Tsui, Ju Shen