Patents Examined by Lee C. Wright
  • Patent number: 5538840
    Abstract: The invention relates to a photographic recording material comprising, on a base, at least one silver-halide emulsion layer and, if desired, at least one interlayer and/or a protection layer, where at least one of said layers contains a UV absorber of the 2-hydroxyphenyltriazine type, as described in greater detail in claim 1; this UV absorber can also be in the form of a homopolymer or copolymer.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: July 23, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Vien Van Toan, David G. Leppard, Gerhard Rytz, Norbert Wurms, Pascal Hayoz
  • Patent number: 5536632
    Abstract: A chemically and spectrally sensitized ultrathin tabular grain emulsion is disclosed including tabular grains (a) having {111} major faces, (b) containing greater than 70 mole percent bromide, based on silver, (c) accounting for greater than 90 percent of total grain projected area, (d) exhibiting an average equivalent circular diameter of at least 0.7 .mu.m, and (e) exhibiting an average thickness of less than 0.07 .mu.m.Improved sensitivity is observed when the surface chemical sensitization sites include silver halide protrusions of a face centered cubic crystal lattice structure forming epitaxial junctions with the tabular grains and having a higher overall solubility than at least that portion of the tabular grains forming epitaxial junctions with the protrusions and a sensitivity enhancing combination of dopants are contained in the silver halide grains including a first sensitivity enhancing dopant capable of providing shallow electron trapping sites and a second sensitivity enhancing selenium dopant.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: July 16, 1996
    Assignee: Eastman Kodak Company
    Inventors: Xin Wen, Richard L. Daubendiek, Donald L. Black, Joseph C. Deaton, Timothy R. Gersey, Joseph G. Lighthouse, Myra T. Olm, Robert D. Wilson
  • Patent number: 5536634
    Abstract: The invention provides a method of forming a spectrally sensitized emulsion comprising providing a silver bromoiodide emulsion, adding sensitizing dye ##STR1## X.sup.+ is a cation other than N-alkyl pyridinium, adding an N-alkyl pyridinium salt, and completing the heat cycle for sensitization.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: July 16, 1996
    Assignee: Eastman Kodak Company
    Inventor: Sang H. Kim
  • Patent number: 5534398
    Abstract: A silver halide photographic material comprises at least one silver halide emulsion layer provided on a support. The silver halide emulsion layer contains a color coupler. According to the present invention, the color coupler is contained in particles of a specific polymer dispersed in the silver halide emulsion layer. The specific polymer comprises repeating units represented by the formula (I): ##STR1## in which R.sup.1 is hydrogen, a halogen atom or an alkyl group having 1 to 4 carbon atoms; each of R.sup.2 and R.sup.3 is an aliphatic group or an aromatic group, or R.sup.2 and R.sup.3 are combined with the oxygen atoms and the phosphorus atom to form a heterocyclic ring; and L is a divalent linking group selected from --CO--, --O--, --S--, --NR.sup.4 --, --SO.sub.2 --, a divalent aliphatic group, a divalent aromatic group and a combination thereof, and R.sup.4 is hydrogen or an aliphatic group.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: July 9, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomokazu Yasuda, Yukio Karino, Seiya Sakurai, Masataka Ogawa
  • Patent number: 5534390
    Abstract: A silver halide color photographic material comprising a support having thereon at least one layer containing at least one compound represented by formula (A) ##STR1## wherein the definition of R.sub.a1, R.sub.a2, R.sub.a3, Z, Y, m and n is described in the specification.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 9, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Seto, Yasuhiro Yoshioka, Masakazu Morigaki
  • Patent number: 5529897
    Abstract: A water-soluble or water-dispersible, non-ionic surface active compound has the formulaZNHQNHZ (I)whereineach Z independently is a polysaccharide group linked to the remainder of the molecule through one of its ketone groups; and,Q together with the two NH groups to which it is attached represents the atoms necessary to complete a polyalkyleneamine unit wherein at least one of the amine nitrogen atoms has a hydrophobic, substituted or unsubstituted hydrocarbon group linked thereto. Such surfactants can be used in hydrophilic colloid compositions in the manufacture of photographic materials.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 25, 1996
    Assignee: Eastman Kodak Company
    Inventors: Katie E. Adams, Ian M. Newington, Alan R. Pitt
  • Patent number: 5529893
    Abstract: Light-sensitive photographic element comprising a polymeric film base, a silver halide emulsion layer, and an antistatic layer comprising a low viscosity and highly sulfonated water soluble polyacetal (preferably obtained by reaction of a low viscosity polyvinyl alcohol and a sulfonated aldehyde), a hydrophobic binder selected from the group consisting of a water dispersible sulfopolyester and a latex polymer having hydrophilic functionality, and a polyfunctional aldehyde crosslinking agent. The antistatic layer may be present as a backing layer on the side of the base opposite the silver halide emulsion layer, as a subbing layer between the base and the emulsion layer in a single or double side coated photographic element, and/or as a subbing layer between the base and a different backing layer.
    Type: Grant
    Filed: July 26, 1995
    Date of Patent: June 25, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alberto Valsecchi, Elio Martino, Paola Puppo, Eric D. Morrison
  • Patent number: 5529894
    Abstract: Disclosed is a silver halide color photographic material which comprises a support having thereon at least one photosensitive silver halide emulsion layer, a pyrazoloazole based magenta coupler, and a coupler which contains a plurality of photographically useful groups or precursors thereof. The photograhically useful groups or precursors thereof are capable of being released when the coupler undergoes a coupling reaction with the oxidized product of a color developing agnet.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: June 25, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Mihayashi, Atsuhiro Ohkawa
  • Patent number: 5527665
    Abstract: An improved hardener and a photographic element comprising same defined by ##STR1## wherein: the substituent groups are as defined in the specification.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: June 18, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ludovic Fodor, Timothy D. Weatherill, Rolf T. Weberg
  • Patent number: 5525192
    Abstract: This invention relates to a method for forming a submicron pattern of a resist using a silylation process which can improve resolution and a side wall profile of the resist. The method comprises the steps for coating a photo resist film on a silicon substrate, forming a primary insoluble layer by a surface treatment of the coated resist film with alkali solution, forming a latent image pattern on an exposed part of the resist film by exposing the resist film using a mask for exposure, forming a surface step with the non-exposed resist film by carrying out a selective etching of the exposed resist film to a certain thickness, forming a silylation layer on the surface of the exposed and etched resist film by carrying out a silylation process, removing the non-exposed resist film by etching, and forming a resist pattern by removing the silylation layer.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: June 11, 1996
    Assignee: LG Semicon Co., Ltd.
    Inventors: Jun S. Lee, Keom J. Park
  • Patent number: 5523199
    Abstract: A photographic element and imaging process employ a light-sensitive silver halide emulsion layer having associated therewith a magenta azine dye-forming coupler which is a phenol having(1) an acylamino group in the 2-position wherein the amino nitrogen contains a substituent which is an aliphatic or aromatic group;(2) hydrogen or a coupling-off group in the 4-position; and(3) a sulfonamido group in the 5-position.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: June 4, 1996
    Assignee: Eastman Kodak Company
    Inventors: Philip T. S. Lau, Rakesh Jain
  • Patent number: 5523203
    Abstract: A silver halide photographic material spectral-sensitized with a combination of compounds represented by the following formulas (I), (II) and (III) or (IV): ##STR1## wherein R.sub.11, R.sub.12, R.sub.21, R.sub.22, R.sub.31, R.sub.32, R.sub.41 and R.sub.42 each represents an alkyl group; R.sub.33 represents a hydrogen atom, an alkyl group or an aryl group; Z.sub.11 and Z.sub.21 each represents an atomic group necessary for forming a benzene ring; Z.sub.12 represents an atomic group necessary for forming a benzthiazole or benzoselenazole nucleus; Z.sub.22 represents an atomic group necessary for forming a benzoxazole or naphthoxazole nucleus; Z.sub.31, Z.sub.32 and Z.sub.41 each represents an atomic group necessary for forming a five-membered or six-membered nitrogen-containing heterocyclic ring; X.sub.11, X.sub.21 and X.sub.31 each represents a charge-neutralizing counter ion; and m, n and p each represents 0 or 1.
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: June 4, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Junji Nishigaki
  • Patent number: 5521057
    Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol image-modifying couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: May 28, 1996
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Ronald E. Leone, David A. Steele
  • Patent number: 5518835
    Abstract: A device for and a method of indicating the residual capacity of a secondary cell, that needs be recharged using a simply constituted device, correctly and within a short period of time.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: May 21, 1996
    Assignees: 4C Technologies Inc., Datalink Corporation
    Inventor: Stewart N. Simmonds
  • Patent number: 5516625
    Abstract: To planarize an oxide-filled shallow trench-isolated semiconductor architecture, a composite photoresist sacrificial layer is initially formed on the oxide-filled structure. The composite photoresist layer contains photoresist plugs which are reflowed to fill depressions in the oxide fill layer overlying the trench, and an overlying photoresist layer which effectively planarizes the depression-filled trench oxide layer. Respective photoresist and oxide selective etching chemistries are then successively applied to first etch the composite sacrificial photoresist layer and then etch the trench fill oxide layer down to the surface of an etch stop polysilicon layer.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: May 14, 1996
    Assignee: Harris Corporation
    Inventors: Jeanne M. McNamara, Deborah K. Rodriguez, David H. Leebrick
  • Patent number: 5514531
    Abstract: There is disclosed a silver halide color photographic material which comprises an acylacetamide yellow dye-forming coupler represented by the following formula (I) and a compound represented by the following formula (II) or (III): ##STR1## wherein R.sub.1 represents a monovalent group, Q represents a group of non-metallic atoms required to form together with the C a 3- to 5-membered cyclic hydrocarbon group or a 3- to 5-membered heterocyclic group, and Y.sub.R represents a residue remaining after removing the acyl group from the acylacetamide yellow dye-forming coupler represented by formula (I), provided that R.sub.1 is not a hydrogen atom and does not bond to Q to form a ring, ##STR2## wherein R.sub.a1, R.sub.a2, R.sub.a3, R.sub.a4, and R.sub.a5 each represent a hydrogen atom, or a substituent such as an alkyl group, an alkenyl group, an aryl group, a heterocyclic group, a cyano group, a halogen atom, or a nitro group, provided that R.sub.a1, R.sub.a2, R.sub.a3, R.sub.a4, and R.sub.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: May 7, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akiko Shono, Nobuo Seto
  • Patent number: 5514530
    Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol image-modifying couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: May 7, 1996
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Melvin M. Kestner, Ronald E. Leone, David A. Steele
  • Patent number: 5512428
    Abstract: Phenanthroazole cyanines and anthraazole cyanines, having not less than one acidic group, of the formula I are excellent spectral sensitizers. ##STR1## The symbols in formula I have the following meanings X.sub.1 and X.sub.2 O, S, Se or NR.sub.10 ;R.sub.1 and R.sub.2 or R.sub.2 and R.sub.3 residues of an optionally substituted phenanthroazole or anthraazole with the remaining group R.sub.3 or R.sub.1 signifying hydrogen;R.sub.4 and R.sub.6 hydrogen or together a .pi.-bond,R.sub.5 and R.sub.7 hydrogen, alkyl or aryl orR.sub.4,R.sub.5,R.sub.6 and R.sub.7 residues of an optionally substituted benzazole, naphthazole, phenanthroazole or anthraazole;R.sub.8, R.sub.9 alkyl, sulphoalkyl, carboxyalkyl, --(CH.sub.2).sub.m --CO--NR.sub.11 --SO.sub.2 --R.sub.12 or --(CH.sub.2).sub.m --SO.sub.2 --NR.sub.11 --CO--R.sub.12 ;R.sub.10 a residue as defined for R.sub.8 /R.sub.9 or aryl;R.sub.11 hydrogen or the negative charge (.sup..crclbar.) which remains when a proton is removed;R.sub.12 alkyl, aryl, --O.sup..crclbar., --N(R.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: April 30, 1996
    Assignee: Agfa-Gevaert AG
    Inventor: Michael Missfeldt
  • Patent number: 5510235
    Abstract: Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: April 23, 1996
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, Daniel L. Kapp, John R. Ross
  • Patent number: 5510234
    Abstract: Compounds corresponding to formula (I): ##STR1## in which R.sub.1 represents alkyl, alkenyl, cycloalkyl or cycloalkenyl,R.sub.2 and R.sub.3 independently of one another represent H, alkyl, alkenyl, cycloalkyl or cycloalkenyl,R.sub.4 represents alkylene or alkenylene,X represents CO or SO.sub.2,m 0 or 1 andl is a number of 1 to 5,as coupler solvents lead to steeper gradation and greater maximum densities.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: April 23, 1996
    Assignee: Agfa - Gevaert AG
    Inventor: Beate Weber