Patents Examined by Janet C. Baxter
  • Patent number: 5744280
    Abstract: Storage-stable photoimageable leuco dye/photooxidant compositions and imaging processes utilizing these compositions are disclosed. These compositions comprise deuterated leuco compounds, e.g., deuterated aminotriarylmethanes, wherein the extent of deuteration is preferably at least 60%. These new compositions and the processes utilizing these new compositions afford improved monochrome images having enhanced film stabilities and image contrast characteristics, wherein desirable higher optical densities in imaged areas (D.sub.imaged) and desirable lower optical densities in unimaged areas (D.sub.unimaged, D.sub.fixed, and D.sub.forccd) are simultaneously both achieved in accordance with the compositions and processes of the instant invention.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: April 28, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William Frank Mooney, III, Jeffrey J. Patricia
  • Patent number: 5744285
    Abstract: Electrolytic and electroless processes which use a solid plug of polymer thick film composition to fill throughholes and composition therefor. The composition comprises a trimodal conductive mixture dispersed in an organic vehicle wherein the trimodal conductive mixture consists of particles of spherical silver, flake silver and silver-coated copper.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: April 28, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John James Felten, Stephan Padlewski
  • Patent number: 5741633
    Abstract: The invention describes silver halide packet emulsion grains or crystals that are conventionally precipitated using gelatin of a given isoelectric pH, surrounded by a layer of gelatin-grafted-polymer particles wherein the grafted gelatin has a different isoelectric pH and the said gelatin-grafted-polymer particles are optionally chemically bonded to the gelatin surrounding the silver halide microcrystals. Such packet emulsions can form the basis for a mixed-packet color photographic system.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 21, 1998
    Assignee: Eastman Kodak Company
    Inventors: Mark Anthony Whitson, John Derek Lewis, Tienteh Chen, Thomas Joseph Dannhauser, Pranab Bagchi
  • Patent number: 5741622
    Abstract: A one-package type photosolder resist developable with an aqueous alkali solution and suitable for use as a solder resist for a printed circuit board is disclosed. The composition comprises (A) a copolymeric macromolecular compound containing at least one free carboxyl group in the molecular unit thereof or (A') a copolymeric macromolecular compound containing at least one free carboxyl group and at least one photoreactive unsaturated group in the molecular unit thereof and assuming a solid state at normal room temperature, (B) a diluent including a polyfunctional unsaturated compound assuming a liquid state at normal room temperature and/or an organic solvent, (C) a photopolymerization initiator, (D) a vinyltriazine compound or a derivative thereof, and (E) an inorganic filler.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: April 21, 1998
    Assignee: Taiyo Ink Manufacturing Co., Ltd.
    Inventor: Masao Arima
  • Patent number: 5736299
    Abstract: A silver halide color photographic material is disclosed, wherein it comprises a support having thereon one or more constituent layers including at least one silver halide emulsion layer, wherein at least one hydrophilic colloid layer of said constituent layers contains a coupler represented by the following formula (M) or formula (I) and at least one hydrophilic colloid layer of said constituent layers contains a compound represented by the following formula (H): ##STR1##
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: April 7, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiyuki Watanabe, Hiroshi Fukuzawa, Michio Ono, Takashi Nakamura
  • Patent number: 5733707
    Abstract: The present invention provides a negative-working image recording material which can be used as a lithographic printing plate for so-called direct plate making process comprising directly making plate from digital signal such as computer signal. A novel negative-working image recording material is provided, comprising a high-molecular compound having a weight-average molecular weight of from 5,000 to 400,000 and a repeating unit represented by the following general formula (I), and a substance which absorbs light to generate heat: ##STR1## wherein R.sup.1 represents a hydrogen atom, a halogen atom, a cyano group (--CN) or an alkyl group; R.sup.2 represents an alkyl group, an aralkyl group or an aromatic ring group; L.sup.1 represents a single bond or a phenylene group; L.sup.2 represents an alkylene group, an alkenylene group or an aromatic ring group; X represents a single bond, --O--, --OCO--, --COO--, --CONR.sup.3 --, --CONR.sup.3 CO--, --CONR.sup.3 SO.sub.2 --, --NR.sup.3 --, --NR.sup.3 CO--, --NR.sup.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: March 31, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumikazu Kobayashi
  • Patent number: 5733706
    Abstract: A dry-developable, positively acting TSI resist contains the following components:a suitable solvent,a strong acid former as the photoactive component, anda base polymer in the form of a copolymer or terpolymer with maleic acid anhydride as a basic unit and glycidyl methacrylate and/or a styrene derivative as a further basic unit, and possibly an additive.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: March 31, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Recai Sezi, Rainer Leuschner, Horst Borndorfer, Eva-Maria Rissel, Michael Sebald, Hellmut Ahne, Siegfried Birkle, Eberhard Kuhn
  • Patent number: 5733714
    Abstract: The present invention relates to a novel antireflective coating solution and a process for its use in photolithography. The antireflective coating solution comprises a novel polymer and an organic solvent or a mixture of organic solvents, where the novel polymer comprises a unit containing a dye that absorbs from about 180 nm to about 450 nm and a unit containing a crosslinking group.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: March 31, 1998
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Iain McCulloch, Ralph R. Dammel, Anthony J. Corso, Shuji Ding, Dana L. Durham, Ping-Hung Lu, Ming Kang, Dinesh N. Khanna
  • Patent number: 5731130
    Abstract: A method for manufacturing an array of stacked capacitors with increased capacitance for DRAM devices was achieved. The invention utilizes two photoresist masking steps and a series of self-aligning etch back steps to form a very high density array of bottom capacitor (node) electrodes. The method involves depositing and planarizing an insulating layer over the DRAM cell areas in which node contact openings (first photoresist mask) are etched to the node contact areas of the FETs. A polysilicon layer is deposited, filling the node contact openings, and patterned (second photoresist mask) to define the outer perimeters of bottom electrodes and the polysilicon layer is recessed by partially plasma etching. The second patterned photoresist mask is then laterally recessed by ashing in O.sub.2 to expose the polysilicon. A second anisotropic etch is used to form a bottom electrode having a vertical center portion and a wider base area.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: March 24, 1998
    Assignee: Vanguard International Semiconductor Corporation
    Inventor: Horng-Huei Tseng
  • Patent number: 5726002
    Abstract: The invention provides a photographic element comprising a light sensitive silver halide emulsion layer having associated therewith a cyan coupler represented by formula (I) in combination with a phenolic solvent represented by formula (II): ##STR1## wherein: R.sub.3 represents an alkyl group of 2 to 15 carbon atoms;R.sub.4 and R.sub.5 each independently represents a hydrogen atom, an alkyl group or an aryl group;R.sub.6 represents an alkyl or aryl group;X represents a halogen atom; andZ represents a hydrogen atom or a group capable of being split off by oxidized color developer; andeach R independently represents a substituent while q represents an integer from 1 to 3;provided that all R groups taken together contain at least 8 carbon atoms.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: March 10, 1998
    Assignee: Eastman Kodak Company
    Inventors: Philip T. S. Lau, Stanley Wray Cowan
  • Patent number: 5726003
    Abstract: Silver halide photographic light-sensitive elements comprising a support having coated thereon a coupler dispersion containing layer comprising phenolic cyan dye forming couplers of Formula I and a high boiling organic solvent of Formulas II-V as defined in the specification, wherein the weight ratio in said layer of solvent of formulas II-V relative to coupler of formula I is from 0.1 to 0.5. Such elements provide relatively high cyan coupler reactivity to obtain satisfactory cyan dye density upon processing of the photographic material.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: March 10, 1998
    Assignee: Eastman Kodak Company
    Inventors: Paul Leo Zengerle, Allan Francis Sowinski
  • Patent number: 5723255
    Abstract: An aqueous solid particle dispersion of a thermal solvent, where said thermal solvent is a water-immiscible phenol derivative and has a melting point, T.sub.m, between 30.degree. C. and about 200.degree. C., wherein said dispersion contains a dispersing aid, and wherein the thermal solvent particles in said dispersion are essentially nanocrystalline is disclosed. Also disclosed is a process for forming a coating comprising the steps of:providing an aqueous solid particle dispersion of thermal solvent, where said thermal solvent is a water-immiscible phenol derivative and has a melting point, T.sub.m, between 30.degree. C. and about 200.degree. C., and where said dispersion contains a dispersing aid;combining said aqueous solid particle thermal solvent dispersion with a coating melt composition, where said coating melt composition is maintained at a temperature, T.sub.c, during the preparation and coating of said coating melt composition, and where T.sub.c <T.sub.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: John Texter, David Alan Czekai
  • Patent number: 5707783
    Abstract: Top surface imaging by silylation of organic photoresists for use in lithographic techniques for the manufacture of microelectronic devices is improved by the use of certain mixtures of organosilane silylating agents. The mixture includes a monofunctional silane in combination with a di- or polyfunctional silane, selected such that the boiling points are the same or very close to each other to facilitate a vapor-phase reaction. Silylation with this mixture provides effective penetration of the silane into the resist without causing so much lowering of the glass transition temperature of the resist that the resist flows under the processing steps and distorts the pattern.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: January 13, 1998
    Assignee: Complex Fluid Systems, Inc.
    Inventors: Craig M. Stauffer, William R. Peterson
  • Patent number: 5705315
    Abstract: A process for the production of a color image is described, in which a photosensitive material that has a temporary support film, a colored photosensitive layer and an adhesion-promoting layer that can be activated by heat is laminated at high temperature and under pressure with an image-receiving material which carries, on a support, a pigment layer containing a white pigment. The photosensitive layer is exposed imagewise and developed to produce an image, the temporary support film is peeled off from the image-receiving material before or after exposure to light and, if required, these steps are repeated with at least one further photosensitive material whose colored layer has another color to produce a multi-colored image. The process gives color images having a smaller dot enlargement compared with a halftone original and is particularly suitable for the color testing of copy for multicolor printing.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: January 6, 1998
    Assignee: AGFA-Gevaert AG
    Inventors: Martin Benzing, Dieter Mohr, Juergen Mertes, Peter Blum
  • Patent number: 5702878
    Abstract: A silver halide photographic emulsion is disclosed, comprising silver halide tabular grains having integrated therein dislocation lines and having an aspect ratio of 1.5 or more and a circle-corresponding diameter of 0.6 .mu.m or less, wherein the grains having integrated therein dislocation lines from the site determined by the following expression (I) occupy 50% or more of the total projected area:D=(1.4S.sup.1.5).times.100.+-.15 (I)wherein D represents a ratio (%) of silver amount consumed until the integration of the dislocation lines to the total amount of silver used and S represents a sphere-corresponding diameter (.mu.m) of a final grain, provided that D is 5 or more.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: December 30, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yoichi Maruyama
  • Patent number: 5698386
    Abstract: The invention provides a photographic light sensitive silver halide emulsion layer having associated therewith a pyrazolotriazole dye-forming coupler having the formula: ##STR1## wherein: R.sub.1 is a substituent bonded to the pyrazolotriazole nucleus by a fully substituted carbon atom;X is hydrogen or a coupling-off group;R.sub.2, R.sub.3, R.sub.4, and R.sub.6 are independently hydrogen or substituent groups;R.sub.5 is selected from the group consisting of alkyl, alkoxy, aryl, and aryloxy groups;R.sub.7 is an alkyl group; andY is a substituent group where m is 0 to 4.The invention also provides a coupler compound, a photographic element containing the emulsion layer of the invention, and an imaging process.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: December 16, 1997
    Assignee: Eastman Kodak Company
    Inventors: Ping Wah Tang, David Joseph Decker, Susan Marie Fischer, Stanley Wray Cowan
  • Patent number: 5695921
    Abstract: A silver halide photographic element comprising a magenta dye forming coupler and a compound of formula (A) associated with the coupler: ##STR1## wherein: each R.sup.20 independently represents an alkyl, alkenyl, or heteroaryl group;Ar represents an aryl or heteroaryl group. Photographic elements of the present invention exhibit low thermal pinking, while still having good image stability and hue.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: December 9, 1997
    Assignee: Eastman Kodak Company
    Inventors: Sundaram Krishnamurthy, Paul Patrick Spara, Rakesh Jain
  • 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: 5693458
    Abstract: The invention provides a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a dye-forming coupler of formula (I): ##STR1## wherein X is H or a coupling-off group, R.sub.1 is H or a substituent group; Y and Z are the same or different and are H or are independently selected from alkyl, aryl and heteroaryl groups; provided that Y and Z taken together with the nitrogen atom may form a 5-10 membered heterocyclic ring.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: December 2, 1997
    Assignee: Eastman Kodak Company
    Inventors: Bernard Arthur Clark, Robert Nicholas Gourley, Hamish McNab, Craig Cameron Sommerville
  • Patent number: 5688366
    Abstract: A method of etching material as a transparent conductive film, a method of producing a semiconductor device, and an etchant therefor are disclosed. These method and etchant are simple, excellent in etching selectivity, and stable for a long time. The methods include the steps of disposing paste on material wherein the paste includes an etching solution and at least one kind of fine particles. A method of producing a semiconductor device, including the above-described etching steps is also disclosed.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: November 18, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirofumi Ichinose, Satoshi Shinkura, Akio Hasebe, Tsutomu Murakami