Patents by Inventor Francis H. Koh

Francis H. Koh 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: 20090313845
    Abstract: A portable air-blowing device comprising a collapsible bulb structure that draws in air through a filter that is removably connected to the bulb and, upon manipulation by squeezing the bulb, expels the filtered air inside the bulb out through a nozzle that can be selectively directed upon a surface or object that the user desires to be cleared of dust. Inlet and outlet valves are part of the bulb structure, regulating the flow of air such that air flows in only one direction, in through the inlet and filter, and out through the outlet and nozzle.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 24, 2009
    Inventors: Francis H. Koh, Franklin C. Koh
  • Publication number: 20040222097
    Abstract: The present invention comprises gel cassettes comprising a base plate with channels to retain gels and an outer plate removably attached to the base plate to form closed chambers within the gel cassette. A gel is disposed within the cassette and subsequently eluted to resolve various samples loaded within each chamber. The outer plate is removed and the gel columns are exposed along the open face regions of the channels of the base plate. The gels are developed within the channels of the base plate as developing solutions communicate with the gel to form an image thereon.
    Type: Application
    Filed: January 13, 2001
    Publication date: November 11, 2004
    Inventors: Francis H. Koh, Chong S. Koh
  • Publication number: 20030024195
    Abstract: The presently disclosed invention claims fitted magnetic panels made of magnetic polymers which are shaped to fit over metal based body surfaces of automobiles and other mobile crafts. The fitted magnetic panel magnetically attaches to body surfaces and protects the surface from damage from the elements or from light to moderate collisions. Additionally the magnetic panels can be used to cover existing body surfaces that are damaged. The fitted magnetic panels can be shaped to various dimensions, colors, and designs.
    Type: Application
    Filed: August 6, 2001
    Publication date: February 6, 2003
    Inventors: Jae H. Koh, Francis H. Koh, Henry H. Koh
  • Patent number: 6166830
    Abstract: The claimed integrated scan-to-store apparatus comprises of a single housing unit wherein a flatbed scanner, CPU, monitor, and storing means are disposed within. The apparatus allows images to be scanned and stored on a removable data/storage device.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: December 26, 2000
    Inventors: Chong S. Koh, Francis H. Koh
  • Patent number: 6068754
    Abstract: The claimed multi-tank gel developing apparatus and method comprises of two inner tanks within one outer tank to develop multiple electrophoresis gels simultaneously. The two inner tanks have openings along the edges of the walls to allow free circulation of solutions between the inner and outer tanks. The solution maybe exchanged by lifting out the inner tanks which retains the gels inside while the solution drains out. Once the solution in the outer tank has been exchanged, the inner tanks can be re-immersed into the outer tank. Furthermore, the inner tanks have detachable bases to facilitate transfer of the gels after development. This claimed apparatus allows for efficient development of electrophoresis gels by minimizing the direct handling of the gels thereby avoiding unwanted damages often incurred by conventional manually developing methods and apparatuses. The multi-tank apparatus can accommodate various gel compositions and sizes.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: May 30, 2000
    Inventor: Francis H. Koh