Patents by Inventor David Chapman

David Chapman 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: 5773193
    Abstract: An optical recording element is disclosed. The element has a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a mixture of a metallized formazan dye with symmetrical and unsymmetrical cyanine dyes. The unrecorded layer is such that the real part of the refractive index (n) at 780 nm is greater than 1.8 and the imaginary part (k) is less than 0.15. The metallized formazan dye has a k value of 0.00 to 0.02.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: June 30, 1998
    Assignee: Eastman Kodak Company
    Inventors: Derek David Chapman, Michael Paul Cunningham, Ramanuj Goswami
  • Patent number: 5731054
    Abstract: A mixture of low k metallized formazan dye with symmetrical and unsymmetrical cyanine dyes is disclosed. The mixture is useful in optical recording layers of optical recording elements.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: March 24, 1998
    Assignee: Eastman Kodak Company
    Inventors: Derek David Chapman, Michael Paul Cunningham, Ramanuj Goswami
  • Patent number: 5703792
    Abstract: A method and system for selecting molecules or molecular parts for screening. A base set of molecules on which chemical tests are to be performed is defined, and once defined, the base set may be extended by selecting molecules which are determined to maximize the diversity of the extended set. Diversity of a set of molecules is measured by reference to steric, electrostatic, and hydrogen bonding features of the set of 3D conformational shapes which each molecule in the set may take on. Each molecule is assigned a measure of incremental (added) diversity with respect to the base set of molecules on which chemical tests are to be performed. To do this, for each new molecule, a set of conformations is defined, and for each conformation, a measure of dissimilarity from each conformation of those molecules in the base set is defined. The molecule's measure of added diversity is responsive to a closest match between the any conformation of that molecule and any conformation of any molecule already in the base set.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: December 30, 1997
    Assignee: Arris Pharmaceutical Corporation
    Inventor: David Chapman
  • Patent number: 5695843
    Abstract: A mixture of symmetrical and unsymmetrical nickel formazan dyes is disclosed. Optical recording elements containing the mixture are also disclosed.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: December 9, 1997
    Assignee: Eastman Kodak Company
    Inventors: Derek David Chapman, Ramanuj Goswami
  • Patent number: 5695918
    Abstract: A dye of the formula (I) below, and photographic elements having a light sensitive layer and which element contains such a dye: ##STR1## X.sub.1 and X.sub.2 each independently represent the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus;x and y are, independently, integers from 0 to 3 provided x+y is no greater than 4;p and q each independently represents 0 or 1,each L independently represents a methine group;R.sub.1 and R.sub.2 each independently represents an alkyl group or an aryl group, andR.sub.3 represents an alkyl group, aryl group or heteroaryl group;W1 is a counterion as needed to balance the charge of the molecule.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: December 9, 1997
    Assignee: Eastman Kodak Company
    Inventors: Colin James Gray, John David Mee, Derek David Chapman, Kevin Wallace Williams
  • Patent number: 5654079
    Abstract: A process of forming a single color, ablation image comprising imagewise-exposing by means of a laser, in the absence of a separate receiving element, a dye-ablative recording element comprising a support having thereon a dye layer comprising a cyan image dye dispersed in a polymeric binder, the dye layer having a nitrosophenol or nitrosonaphthol ferrous complex associated therewith, the dye layer also having an infrared-absorbing material associated therewith to absorb at a given wavelength of the laser used to expose the element, the cyan image dye not having substantial absorption at the wavelength of the laser used to expose the element, the laser exposure taking place through the dye side of said element, the laser exposure taking place through the dye side of the element, thereby imagewise-heating the dye layer and causing it to ablate, and removing the ablated material to obtain an image in said ablative recording element.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: August 5, 1997
    Assignee: Eastman Kodak Company
    Inventors: Lee William Tutt, Derek David Chapman
  • Patent number: 5569581
    Abstract: Two-dimensional polyacrylamide gel electrophoresis of seminal plasma samples indicate that two proteins (26 kDa, pI 6.2; 55 kDa, pI 4.5) predominated in higher fertility bulls and two proteins (16 kDa, pI 4.1; 16 kDa, pI 6.7) predominated in lower fertility bulls. A regression model was developed to predict bull fertility using the four fertility-associated protein densities. A plot of actual bull fertility versus that calculated by this model was linear and positively correlated (r=0.89). These findings indicate that bull seminal plasma contains fertility-associated proteins which are predictive of bull fertility. Additionally, the ability of seminal plasma to alter the in vitro fertility of ejaculated bull sperm was examined using a sperm penetration assay for zona-free bovine oocytes. Washed, ejaculated sperm from bulls of below (low) or above average (high) fertility were mixed with seminal plasma from the same bull, or with seminal plasma from a bull of contrasting fertility.
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: October 29, 1996
    Assignee: The Penn State Research Foundation
    Inventors: Gary Killian, David Chapman, Aida Cancel, Margaret A. Henault
  • Patent number: 5526281
    Abstract: Explicit representation of molecular shape of molecules is combined with neural network learning methods to provide models with high predictive ability that generalize to different chemical classes where structurally diverse molecules exhibiting similar surface characteristics are treated as similar. A new machine-learning methodology that can accept multiple representations of objects and construct models that predict characteristics of those objects. An extension of this methodology can be applied in cases where the representations of the objects are determined by a set of adjustable parameters. An iterative process applies intermediate models to generate new representations of the objects by adjusting said parameters and repeatedly retrains the models to obtain better predictive models. This method can be applied to molecules because each molecule can have many orientations and conformations (representations) that are determined by a set of translation, rotation and torsion angle parameters.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: June 11, 1996
    Assignee: Arris Pharmaceutical Corporation
    Inventors: David Chapman, Roger Critchlow, Ajay N. Jain, Rick Lathrop, Tomas L. Perez, Tom Dietterich
  • Patent number: 5341157
    Abstract: A computer driven device for making silk screens suitable for making signs, PC boards, mask, metal, textile graphics and the like is disclosed. The device uses a laser beam to burn holes in a thin sheet of plastic, preferably nylon. The laser beam is directed toward the surface of the nylon screen and the beam is moved incrementally under computer control to position the two before activation of the laser. The desired sign or pattern to be burned into the screen is constructed by means of a microprocessor or PC using a desk top type publishing program. The finished nylon "silk" screen can be used in the same manner as conventional silk screens.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: August 23, 1994
    Assignee: Bumb & Associates
    Inventors: Gerald L. Campagna, David Chapman
  • Patent number: 5293884
    Abstract: A hair tie to fasten locks of hair into pony tails, braids or dred locks. The hair tie comprises a generally planar, elongated material containing corresponding fastening surfaces at each end. The hair tie encircles the lock of hair in a belt-like fashion and fastens upon itself. The hair tie is capable of tying different amounts of hair by varying the positions the ends of the hair tie engage. Additionally, the hair tie incorporates an elastic loop and a friction pad to ensure the hair tie securely attaches and remains in position on the lock of hair. Ornamentation, such as jewelry, beads and ribbon, printing and logos may decorate the hair tie, allowing individuals to decorate their hair as well as fasten it.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: March 15, 1994
    Assignee: Full Moon Fashion Accessories, Inc.
    Inventors: R. David Chapman, David K. Hays, Barry Levenson, Scott A. Miller
  • Patent number: 5213402
    Abstract: The instant device consists of an insulated hollow interior cabinet built into a home or office wall with exterior doors flush to exterior trim on said walling within a home or office such that when said exterior doors are open, there is seen, a flat top ceiling plate, a flat bottom floor plate, two lateral wall plates and an upwardly inclining posterior plate extending from the back edge of the flat bottom floor plate and a downwardly inclining posterior plate extending from the back edge of the flat top ceiling plate such that both inclining plates meet at a complementary angle with all said plates joined to form one complete hollow interior cabinet unit, characterized likewise by the presence of a hinged drop leaf cover covering the inside face of the upwardly inclining plate when closed and which when opened through an arc exposes four circular apertures and one elliptical aperture in the upwardly inclining plate and which said device serves by way of further components, to wit, hollow chutes positioned b
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 25, 1993
    Inventors: Joseph Bernal, David Chapman
  • Patent number: 5018233
    Abstract: The last for making boots and shoes comprises a main body portion (1) and a detachable toe portion (2). The two are held together during lasting by means of a peg (3) engaging in a hole (4) in the toe portion. When the last is to be removed from the shoe, only the main body portion (1) is removed, the toe portion (2) remaining in place. This enables shoes of complex toe shapes to be made.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: May 28, 1991
    Assignee: Geo. J. Cox Ltd.
    Inventors: Adam P. M. Waterfield, Norman R. Waterfield, David A. Chapman, Thomas K. Andrews, Brian Humphrey
  • Patent number: 4709327
    Abstract: A parallel processing circuit is disclosed for use as the processor/memory in a highly parallel processor. The circuit comprises an instruction decoder that generates tables of outputs in response to instructions received at the decoder and a plurality of processor/memories each of which comprises a read/write memory and a processor for producing an output depending at least in part on data read from the memory and instruction information received at the instruction decoder. In addition, the circuit provides means for simultaneously addressing at least one cell in each read/write memory to write data thereto or read data therefrom and means for providing to each processor an output table from the decoder, the particular output table depending on instruction information received at the decoder. Further the processing circuit comprises means for selecting from the output table a particular output depending on data input to the processor.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: November 24, 1987
    Inventors: W. Daniel Hillis, Thomas F. Knight, Jr., Alan Bawden, Brewster L. Kahle, David Chapman, David P. Christman, Cliff A. Lasser, Carl R. Feynman
  • Patent number: 4561623
    Abstract: A telephone book holder is described which consists of a spine with two groups of parallel channels in its rear surface. Edges of front and rear covers are dimensioned to be slid into respective channels of each group, the edges being connected to the covers by living hinges. Book retaining wires are pivotally connected at the top end of the spine and can be press fitted to the other end to retain a telephone book in position. Top and bottom caps are securable to the ends of the spine to retain the covers and the wires on the spine. The covers can be replaced without requiring removal of the book or complete detachment of the end caps and the thickness of the book to be held is adjustable by sliding the covers into appropriate channels.
    Type: Grant
    Filed: May 11, 1984
    Date of Patent: December 31, 1985
    Assignee: The Chas. Chapman Company Limited
    Inventors: Charles G. Shepherd, David Chapman
  • Patent number: 4177968
    Abstract: An elongate soldier for concrete framework comprising two spaced parallel substantially U-section members interconnected back to back in such a manner as to leave between the members, at least one channel or passage extending along the length of the soldier from each of its ends.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: December 11, 1979
    Assignee: Acrow (Engineers) Limited
    Inventor: David Chapman
  • Patent number: 4030932
    Abstract: Novel sensitizing dyes containing isoindole nuclei. These dyes can be used as spectral sensitizers for silver halide emulsions.
    Type: Grant
    Filed: May 28, 1975
    Date of Patent: June 21, 1977
    Assignee: Eastman Kodak Company
    Inventor: Derek David Chapman
  • Patent number: D256313
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: August 12, 1980
    Assignee: Gerbert Products Company
    Inventor: David Chapman
  • Patent number: D257549
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: November 25, 1980
    Assignee: Gerber Products Company
    Inventor: David Chapman