Patents Represented by Attorney Thomas C. Lagaly

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  • Metal complex/cyanoacrylate compositions useful in latent fingerprint development
    Patent number: 5342645
    Abstract: A cartridge useful in detecting fingerprints includes a housing with a chamber therein and an outlet from the chamber. The chamber contains a thermally stable porous or fibrous support impregnated with both:1 ) a cyanoacrylate ester, and2) a volatile, emissive lanthanide metal-complex or actinide metal-complex. Upon the application of sufficient heat to the support, the cyanoacrylate and metal complex volatilize and co-deposit on fingerprint residue to enhance the visualization of the fingerprint.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: August 30, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John F. Eisele, Terrance P. Smith, Michael C. Palazzotto
  • Carbonless pad assembly
    Patent number: 5334094
    Abstract: The present invention comprises a pad assembly for carbonless sheets. The assembly comprises a plurality of carbonless sheets wherein each sheet is disposed in a stack and wherein each carbonless sheet has a band of repositionable pressure sensitive adhesive coated on a rear surface of the pad.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: August 2, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: June M. Armbruster, Louis M. Leichter
  • Thermal transfer donor element comprising a substrate having a microstructured surface
    Patent number: 5326619
    Abstract: Laser-addressable thermal transfer donor elements for producing color proofs, printing plates, films, printed circuit boards, and other media are disclosed. The thermal transfer donor elements include a substrate having a microstructured surface. The microstructured surface contain a plurality of randomly positioned discrete protuberances of varying heights and shapes. The donor elements further include a black metal layer on the microstructured surface and a gas-producing polymer layer over the black metal layer. The gas-producing polymer in the gas-producing polymer layer has a thermally available nitrogen content of greater than about 10 weight percent. A thermal mass transfer material (e.g., a colorant such as a dye or pigment) is included in or over the gas-producing polymer layer.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: July 5, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William V. Dower, Mark K. Debe
  • Silver halide photographic elements
    Patent number: 5290670
    Abstract: An infrared sensitive silver halide photographic element which contains an infrared-absorbing dye represented by the following formula ##STR1## wherein: R.sub.1 and R.sub.2 each independently represents a sulfoalkyl or a sulfatoalkyl group,Q represents the atoms necessary to complete a 5- to 6- membered carbocyclic ring,Z.sub.3 represents the atoms necessary to complete a 5-membered N-containing aromatic ring,X.sup.- represents an anion,n is an integer of 1 or 2, provided that n is 1 when the dye forms an intramolecular salt, andZ.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted indole nucleus.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: March 1, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ivano Delprato, Stefano Mana, Antonio Luzzi
  • Photographic element containing a thermal dye bleach system
    Patent number: 5266452
    Abstract: A photographic element containing a thermal-dye-bleach construction includes a thermal nucleophile-generating agent in association with a polymethine dye having a nucleus of general formula (I): ##STR1##
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: November 30, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jonathan P. Kitchin, Mark P. Kirk, Dian E. Stevenson, Randall H. Helland