Patents by Inventor David A. Bowen

David A. Bowen 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: 20050251878
    Abstract: Nucleotide sequences for two genes, tcdB and tccC2, from the tcd genomic region of Photorhabdus luminescens W-14 are useful in heterologous expression of orally active insect toxins.
    Type: Application
    Filed: August 26, 2003
    Publication date: November 10, 2005
    Inventors: Richard Ffrench-Constant, David Bowen, Thomas Rocheleau, Nicholas Waterfield
  • Publication number: 20030164563
    Abstract: An arrangement and method for using microwave energy to disassemble, release, and hydrate contact lenses in one or more microwave heating and processing stations. Microwave energy is used to promote disassembly of a front curve mold with an adhered HEMA ring from a base curve mold with an adhered contact lens, and microwave energy is also used to promote release of the contact lens from the base curve mold, and microwave energy is further used to facilitate hydration of the released contact lens.
    Type: Application
    Filed: February 12, 2003
    Publication date: September 4, 2003
    Inventors: Olin Calvin, David Bowen, Philip R. Albrektson
  • Publication number: 20020078478
    Abstract: Nucleotide sequences for two genes, tcdB and tccC2, from the tcd genomic region of Photorhabdus luminescens W-14 are useful in heterologous expression of orally active insect toxins.
    Type: Application
    Filed: March 26, 2001
    Publication date: June 20, 2002
    Inventors: Richard H. Ffrench-Constant, David Bowen, Thomas A. Rocheleau, Nicholas R. Waterfield
  • Patent number: 6007911
    Abstract: Industrial fabrics which contain thermoplastic weft or filling filaments characterized by having at least one segment of the filament's cross sectional area consisting of a foamed polymer are described. The unfoamed segment or segments of the filament contribute axial strength while the foamed segment or segments of the filament contribute to radial compressibility. Industrial fabrics utilizing these filaments have reduced permeability, reduced weft denier, and improved fabric rigidity.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: December 28, 1999
    Inventor: David Bowen, Jr.
  • Patent number: 5998310
    Abstract: Woven industrial fabrics which have an air permeability of at least 200 cfm per square foot under a pressure differential of 0.5 inches of water are described. These fabrics contain finned weft fibers with a shape factor of 2.5 to 5.0 and a distortion index of less than 35. Improved fabric stability and a significant reduction in weft fiber denier are achieved.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: December 7, 1999
    Inventor: David Bowen, Jr.
  • Patent number: 5720020
    Abstract: A system and method for drawing non-opaque objects with realistic refraction attributes. The system adjusts the pixel values of an object with a refraction index other than unity so that the resulting image approximates a refracted image. Adjacent pixel values are copied and blended with the pixel being rendered based upon a calculated refraction value. Refraction can be approximated as a surface effect by offset vectors, as a property of an object having parallel front and back surfaces and as an arbitrary object with non-parallel opposing surfaces. The more complex representations provide improved approximations of the refracted image. The resulting image presents a more realistic view of the refracted image.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: February 17, 1998
    Assignee: International Business Machines Corporation
    Inventors: David Conrad Tannenbaum, Andrew David Bowen, Jeffrey Scott Spencer
  • Patent number: 5659671
    Abstract: The present invention provides an apparatus for displaying an image of an object, as illuminated by a light source, on a display within a computer graphics display system. The image is graphically represented by a mesh of polygons and each polygon within the mesh has a surface defined by a set of vertices. The vertices define the surface of the polygon. The apparatus includes a processor, such as a rasterizer, that is responsive to each set of vertices for rendering each surface within the mesh of polygons in response to ambient lighting to produce a number of initially rendered surfaces within the mesh of polygons. Phong shading is utilized by the present invention. The processor produces a specular highlight contribution for each surface within the mesh of polygons utilizing a halfway vector, pointing from each surface to a direction halfway between a light vector and a vector pointing towards a viewpoint, associated with a vector normal to each surface.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: August 19, 1997
    Assignee: International Business Machines Corporation
    Inventors: David Conrad Tannenbaum, Andrew David Bowen, Robert Spencer Horton
  • Patent number: 5617903
    Abstract: A papermaker's fabric constructed from polymeric fibers with 15 percent or more of the fabric'fibers larger than 100 denier and multipolymeric, the multipolymeric fibers containing two or more distinct polymeric regions within their cross sections. The multipolymeric fibers may be constructed in a sheath-core, side by side, or islands in the stream form. The components of the multipolymeric fibers are each selected to provide a combination of properties not available from any single polymer fiber.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: April 8, 1997
    Inventor: David Bowen, Jr.
  • Patent number: 5449548
    Abstract: A woven or spiral papermaker's or industrial fabric characterized in that at least a portion of its fibers have two or more thin fins, some of which fins are designed for ease of flexing or compression by incorporation of a reduced cross section "hinge" area or by a variation in thickness of more than 20 per cent as a function of distance from the fiber center. This will achieve interlocking between crossing fibers at significantly reduced "beat-up" force in weaving or less shrinkage force in spiral fabrics. By remaining extended where there is no fiber to fiber crushing action, the fins fill the fabric interstitial spaces and control fabric porosity. Significant cost and quality benefits are achieved.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: September 12, 1995
    Inventor: David Bowen, Jr.
  • Patent number: 5364692
    Abstract: A stuffed spiral link fabric, providing a supporting surface for transporting a web includes a plurality of synthetic spiral coil members connected together serially by elongated hinge members extending through intermeshed portions of adjacent intermeshing spiral coil members to form a spiral link fabric and a plurality of elongated shaped synthetic stuffer yarns extending through central portions of the spiral coil members to form a stuffed spiral link fabric. The stuffed spiral link fabric is heat set to form a fabric in which each spiral coil member has a cross sectional shape having arcuate ends joined by substantially straight portions and a central portion of each spiral coil member is substantially filled with a stuffer yarn which engages and is clamped to each intermeshed portion adjacent thereto, reducing the air and moisture permeability of the fabric and increasing the fabric stability. The stuffer yarn is modified in shape and trapped in place in the spiral fabric by the heat setting step.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: November 15, 1994
    Assignee: Scapa Group, PLC
    Inventors: David Bowen, Jr., Gerald L. Smith
  • Patent number: 5361808
    Abstract: A woven papermakers' fabric containing warp and weft yarns wherein the weft yarns are monofilaments characterized by having two or more thin readily deformable fins or lobed extensions. By replacing the currently used round monofilaments or twisted and cabled weft yarns, these inventive finned monofilaments produce fabrics with significantly broadened permeability range control and stabilize the fabric against mechanical distortion.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: November 8, 1994
    Inventor: David Bowen, Jr
  • Patent number: 5356641
    Abstract: A process for obtaining a blending and ageing additive from oak wood which comprises (a) mixing oak wood in subdivided or particulate form with water, alcohol or mixture thereof; (b) enzymatically digesting the mixture at elevated temperature; (c) adding wine or other alcohol to the digestion mixture after the digestion is completed; (d) refluxing the resulting mixture at elevated temperature until the wood changes color and the liquid phase no longer changes color; (e) separating the resulting liquid phase from the wood; and (f) distilling the liquid phase to obtain a clear or water-white distillate and solid extract. The distillate and/or extract may be added to wine or other beverage, or other composition such as vinegar, to improve properties thereof.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: October 18, 1994
    Assignee: Indopco, Inc., d/b/a Quest International Flavors & Food Ingredients Company
    Inventors: David Bowen, Jan Benning, Chris Bronzert, Alan Ellison
  • Patent number: 4851283
    Abstract: Thermoformable laminates, suitable for use as automobile headliners, comprising a layer of non-woven fabric (acoustical pad bonded to one side of a foamed polymer sheet are disclosed. The non-woven fabric comprises a certain blend of staple fibers which provide an optimum balance of characteristics including cost and improved sound absorption characteristics which are important headliner characteristics, especially, for compact and subcompact automobile uses.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: July 25, 1989
    Assignee: Monsanto Company
    Inventors: James S. Holtrop, David Bowen, Jr.
  • Patent number: 4236631
    Abstract: A conveyor unit comprises a conveyor carried by a movable support, which support also carries a conveyor drive. The conveyor drive is provided with a control including a light source and a detector cell for sensing the presence of an article on a predetermined region of the conveyor, and the conveyor drive is started and stopped in accordance with signals from the detector cell. A location bar which extends around the conveyor is used for connecting the conveyor unit with another such unit at either end or at the side thereof. The support also carries a services conduit which has an outlet enabling electrical power supply to be provided for the conveyor drive. The services conduit can be connected at each end with the services conduit of an adjoining conveyor unit.
    Type: Grant
    Filed: October 19, 1976
    Date of Patent: December 2, 1980
    Assignee: The Lucas Electrical Company, Ltd.
    Inventors: David Bowen, David Boot
  • Patent number: 4050725
    Abstract: A latch assembly which both selectively latches and accurately positions separable members relative to one another. The latch assembly includes pawls pivotably mounted on a first member, the first member being biased toward a separated position relative to a second member. The pawls, which are biased toward a latched position, are interconnected by a handle for selectively urging the pawls toward an unlatched position. The first member supports guide pins adjacent to the pawls, the guide pins having a positioning flange located thereon. The second member carries latching posts having a recess for receiving the guide pins and a shoulder accurately positionable relative to the second member. The shoulders have oppositely facing surfaces, one surface engageable by the flange of the guide pin and the other by a latching surface of the pawl when the first member is in its latched position.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: September 27, 1977
    Assignee: Eastman Kodak Company
    Inventors: William Crawford Wilson, David Bowen Anderson
  • Patent number: 3964724
    Abstract: The invention relates to high-speed yarn traverse winding apparatus, method and product.Circling thrust members are provided to intercept a yarn being reciprocably traversed and forwarded to a bobbin in a winding zone to acceleratively control the reversal displacement of the yarn on the bobbin. A yarn package having a high resolution of symmetry is produced, the package being characterized in that the majority of the reversal curves of the helical windings are comprised essentially of camber curves generated substantially to a point of projected intersection of the diagonal linear extensions of the helical windings.
    Type: Grant
    Filed: November 2, 1970
    Date of Patent: June 22, 1976
    Assignee: Monsanto Company
    Inventors: Don E. Fisher, Paul A. Knauff, David Bowen, Jr.