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Roger Living Lok

from Monterey Park, CA
Age ~81
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Related to:
Ann C LokXenia Yuen Won Lok, 46Patricia Jo Bell, 65Mark Delgrosso, 74Holly Bradshaw, 44Richard Hood, 88Kristen Hewett, 58Nicole Delgrosso, 49
Connected to:
Aaron Lok, 63Angela M Lok, 45Angeline W Lok, 63Armando Lok, 63Avon V Lok, 50Bee F Lok, 65Calvin S Lok, 38Choi K Lok, 72Chui F Lok, 95Chung P Lok, 65

Roger Lok Phones & Addresses

  • 482 Cumbre St, Monterey Park, CA 91754
  • 204 Dorchester Rd, Rochester, NY 14610 (716) 288-4356
  • 35 Bay Bluff Ln, Rochester, NY 14622 (585) 224-8569
  • 586 Manitou Beach Rd, Hilton, NY 14468 (585) 392-9255

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Company: Myself Position: Retired

Industries

Sports

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Roger Lok Photo 1

Roger Lok

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Location:
Rochester, NY
Industry:
Sports
Work:
Myself
Retired

Publications

Us Patents

Stable And Water Soluble Bis Au(I) Complexes And Their Synthesis

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US Patent:
6365746, Apr 2, 2002
Filed:
Dec 27, 1999
Appl. No.:
09/473249
Inventors:
Roger Lok - Rochester NY
Weimar W. White - Canaseraga NY
Brian P. Cleary - Webster NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
C07D23384
US Classification:
548106, 548253, 549 3, 549210, 556113, 556117
Abstract:
This invention relates to an organomercapto Au(I) complex having the formula wherein M is a cationic counterion; SOL is a solubilizing group: A is a substituted or unsubstituted divalent organic linking group; and n is 1 to 4 and wherein the compound is symmetrical. It further relates to a method of manufacturing an organomercapto Au(I) complex comprising reacting an Au (I) complex with an organomercapto ligand and isolating the resulting organomercapto Au(I) complex from the reaction mixture.

Heat Sensitivity Improvement With Combinations Of Gold Sensitization And Spectral Sensitizing Dye And Filter Device

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US Patent:
6368781, Apr 9, 2002
Filed:
Oct 20, 1999
Appl. No.:
09/420726
Inventors:
Pamela M. Ferguson - Farmington NY
Roger Lok - Rochester NY
Alton L. Chitty - Rochester NY
Norman R. Oneal - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 114
US Classification:
430584, 430510, 430511, 430512, 430605
Abstract:
The invention relates to a photographic element comprising a support and a silve halide emulsion layer wherein the silver halide emulsion contains at least one absorber dye and at least one sensitizing dye. The wavelength of maximum absorbance of said absorber dye and the wavelength of maximum sensitivity of the emulsion provided by the spectral sensitizing dye are substantially the same. The emulsion is chemically sensitized with a stable and water soluble AuI) complex. This provides manufacturing improvements, improved detail and sharpness, improved dodging and burning and lower cost without an unwanted increase in heat sensitivity.

High Chloride Silver Halide Elements Containing Pyrimidine Compounds

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US Patent:
6573038, Jun 3, 2003
Filed:
Jun 1, 2001
Appl. No.:
09/872669
Inventors:
Shihua S. Chen - Penfield NY
Roger Lok - Rochester NY
Alberto M. Martinez - Rochester NY
Dean H. Russell - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 134
US Classification:
430551, 430614
Abstract:
A silver halide photographic element comprising a silver halide emulsion which is greater than 50 mole % silver chloride and a pyrimidine compound represented by Formula I wherein R , R , and R are each independently a hydrogen atom or a hydroxy, alkoxy, amino, alkylamino, cyanoamino or alkyl group, and R is a hydroxy, alkoxy, amino, alkylamino, cyanoamino or alkyl group; provided that at least one of R , R , R , and R is a hydroxy or an amino group.

Silver Halide Photographic Elements Containing Bis Au(I) Sensitizers

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US Patent:
6686143, Feb 3, 2004
Filed:
Aug 7, 2002
Appl. No.:
10/213992
Inventors:
Roger Lok - Rochester NY
Brian P. Cleary - Webster NY
Alton L. Chitty - Rochester NY
Weimar W. White - Canaseraga NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 109
US Classification:
430605, 430569, 430600, 430603, 430611, 430612
Abstract:
This invention relates to a photographic element comprising a support and a silver halide emulsion layer, the emulsion layer comprising a water soluble Au(I) complex having the formula wherein the complex is symmetrical; L is an organothiosulfonato ligand which is an antifogging, stabilizing, or sensitizing compound, n is 1 to 4, and M is a cationic counterion. This invention further relates to a silver halide photographic element comprising a support and a silver halide emulsion layer, the emulsion layer comprising an organothiosulfonato Au(I) complex having the formula wherein M is a cationic counterion; A is a substituted or unsubstituted organic group; and n is 1 to 4; and wherein the compound is symmetrical. It further relates to a method of preparing a silver halide emulsion utilizing said organothiosulfonato Au(I) complexes.

Silver Ion Sequester And Release Agent

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US Patent:
6689335, Feb 10, 2004
Filed:
Dec 19, 2002
Appl. No.:
10/324234
Inventors:
Joseph F. Bringley - Rochester NY
Roger Lok - Hilton NY
Nancy B. Liebert - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
C01B 1516
US Classification:
423309
Abstract:
A silver ion sequester and release agent is described which comprises a silver ion exchangeable material of the formula: where M is Zr, Ti, Sn, Ge or Hf or any combination thereof; Mâ is an Alkali or alkaline earth metal; x is a number from 0. 10 to 0. 80; y is a number from 0. 15 to 0. 85; (x+y) is a number from 0. 25 to 0. 95; and n is a rational number between 0 and 10. Processes for preparing such silver ion sequester and release agent material are also described comprising combining in an aqueous medium a crystalline or amorphous metal hydrogen phosphate ion exchange host material of the formula M(HPO ). nH O with less than 2 molar equivalents of silver ions relative to the amount of ion exchange host material such that silver ions are exchanged for protons in the host material, and adding a base compound to the aqueous medium to achieve a pH of at least 4. 4 and sequester at least 95% of the combined silver ions into the host material. Further described are photographic elements comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein one or more layers contain such a silver ion sequester and release agent which sequesters silver ions prior to photographic processing and releases silver ions upon exposure to photographic processing solutions.

Bis Au(I) Sensitizers And Their Synthesis

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US Patent:
6696586, Feb 24, 2004
Filed:
Aug 7, 2002
Appl. No.:
10/214031
Inventors:
Brian P. Cleary - Webster NY
Roger Lok - Rochester NY
Weimar W. White - Canaseraga NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
C07F 112
US Classification:
556113, 556 11, 548106, 548108, 549 3, 549210, 430605
Abstract:
This invention relates to an organothiosulfonato Au(I) complex having the formula wherein M is a cationic counter ion; A is a substituted or unsubstituted organic group; and n is 1 to 4; and wherein the compound is symmetrical. It further relates to the synthesis of said compounds.

High Chloride Emulsion Having High Sensitivity And Low Fog

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US Patent:
6740482, May 25, 2004
Filed:
Dec 22, 1994
Appl. No.:
08/362107
Inventors:
Benjamin Teh-Kung Chen - Penfield NY
Roger Lok - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 1005
US Classification:
430567, 430603, 430611
Abstract:
The invention provides a radiation sensitive emulsion comprised of a dispersing medium and silver iodochloride grains WHEREIN the silver iodochloride grains are partially bounded by {100} crystal faces satisfying the relative orientation and spacing of cubic grains and contain from 0. 05 to 1 mole percent iodide, based on total silver, with maximum iodide concentrations located nearer the surface of the grains than their center and wherein said emulsion further comprises a thiosulfonate of Formula I and a sulfinate of Formula II wherein Formula I is wherein Z is alkyl, aryl, heteroaryl, arylalkyl, substituted aryl or a polymeric backbone wherein the thiosulfonate group is repeated and M is a monovalent metal or a tetraalkylammonium cation, and Formula II is wherein Z is alkyl, aryl, heteroaryl, arylalkyl, substituted aryl or a polymeric backbone wherein the sulfinate group is repeated and M is a monovalent metal or a tetraalkylammonium cation.

Silver Halide Elements Containing Activated Precursors To Thiocyanato Stabilizers

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US Patent:
20050123867, Jun 9, 2005
Filed:
Dec 4, 2003
Appl. No.:
10/727833
Inventors:
Roger Lok - Hilton NY, US
Paul Zielinski - Rochester NY, US
Mary Brick - Webster NY, US
International Classification:
G03C001/46
US Classification:
430502000
Abstract:
This invention relates to a silver halide photographic element comprising a support and a silver halide emulsion layer, said emulsion layer being in reactive association with a thiocyanato compound represented by formula I: PUG-SCN   (I) wherein PUG represents a photographically useful group; and wherein upon chemical processing, PUG-SCN releases in a non-image-wise fashion a photographically useful mercaptan, PUG-S.
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Roger Living Lok from Monterey Park, CA, age ~81 Get Report