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Harold I Machonkin

from Homosassa, FL
Age ~92

Harold Machonkin Phones & Addresses

  • 19 Cupania Ct, Homosassa, FL 34446 (352) 382-5515
  • Webster, NY
  • Citra, FL
  • 19 Cupania Ct, Homosassa, FL 34446 (904) 662-3415

Education

Degree: High school graduate or higher

Emails

Publications

Us Patents

High Contrast Photographic Elements Containing Ballasted Hydrophobic Isothioureas

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US Patent:
51262274, Jun 30, 1992
Filed:
Oct 17, 1990
Appl. No.:
7/599218
Inventors:
Harold I. Machonkin - Webster NY
Donald L. Kerr - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 134
G03C 526
US Classification:
430264
Abstract:
Silver halide photographic elements which are capable of high contrast development, when processed in the presence of a hydrazine compound that functions as a nucleating agent, contain both an amino compound which functions as an incorporated booster and a ballasted hydrophobic isothiourea compound comprising a ballasting group, that is attached to the sulfur atom, which serves to restrict the mobility of the compound and thereby aid in retaining it in the photographic element during development. The ballasted hydrophobic isothiourea compound is highly effective in reducing pepper fog and also serves to restrain image spread.

High Contrast Photographic Element Including An Aryl Sulfonamidophenyl Hydrazide Containing Both Thio And Ethyleneoxy Groups

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US Patent:
49886045, Jan 29, 1991
Filed:
May 24, 1990
Appl. No.:
7/528650
Inventors:
Harold I. Machonkin - Webster NY
Donald L. Kerr - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 110
US Classification:
430264
Abstract:
Silver halide photographic elements which are capable of high contrast development having incorporated therein, as a nucleating agent, an aryl sulfonamidophenyl hydrazide of the formula: ##STR1## where R is a monovalent group comprised of at least three repeating ethyleneoxy units, m is 1 to 6, Y is a divalent aromatic radical, and R. sup. 1 is hydrogen or a blocking group.

High Contrast Photographic Recording Material And Emulsion And Process For Their Development

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US Patent:
49120166, Mar 27, 1990
Filed:
May 31, 1988
Appl. No.:
7/200273
Inventors:
Harold I. Machonkin - Webster NY
Lee J. Fleckenstein - Rochester NY
Donald L. Kerr - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 106
US Classification:
430264
Abstract:
A photographic recording material and emulsion are described which are capable of providing high contrast images. The recording material and emulsion comprises negative working silver halide and contrast enhancing arylhydrazide nucleating agents. A process for utilization of the elements and emulsions is also described.

Nucleated High Contrast Photographic Elements Containing Thioether Compounds To Inhibit Pepper Fog And Restrain Image Spread

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US Patent:
52328180, Aug 3, 1993
Filed:
Jul 25, 1991
Appl. No.:
7/735975
Inventors:
Harold I. Machonkin - Webster NY
Donald L. Kerr - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 106
US Classification:
430264
Abstract:
Silver halide photographic elements which are capable of high contrast development and are especially useful in the field of graphic arts have incorporated therein a hydrazine compound which functions as a nucleator, an amino compound which functions as an incorporated booster, and a thioether compound which functions to inhibit pepper fog and restrain image spread.

Photographic Element Comprising An Ethyleneoxy-Substituted Amino Compound And Process Adapted To Provide High Constrast Development

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US Patent:
49753541, Dec 4, 1990
Filed:
May 30, 1989
Appl. No.:
7/359009
Inventors:
Harold I. Machonkin - Webster NY
Donald L. Kerr - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 106
G03C 524
US Classification:
430264
Abstract:
Silver halide photographic elements which are capable of high contrast development, when processed in the presence of a hydrazine compound that functions as a nucleating agent, include certain secondary or tertiary amino compounds which function as incorporated boosters. Such elements are particularly useful in the field of graphic arts.

Nucleated High Contrast Photographic Elements Containing Ballasted Thioether Isothioureas To Inhibit Pepper Fog And Restrain Image Spread

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US Patent:
51962926, Mar 23, 1993
Filed:
Oct 17, 1991
Appl. No.:
7/778037
Inventors:
Harold I. Machonkin - Webster NY
Donald L. Kerr - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 134
G03C 142
US Classification:
430264
Abstract:
Silver halide photographic elements which are capable of high contrast development and are especially useful in the field of graphic arts have incorporated therein a hydrazine compound which functions as a nucleator, an amino compound which functions as an incorporated booster, and a ballasted thioether isothiourea which functions to inhibit pepper fog and restrain image spread.

Photographic Material Containing A Novel Polymeric Dye-Forming Coupler

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US Patent:
48046205, Feb 14, 1989
Filed:
Sep 15, 1987
Appl. No.:
7/097229
Inventors:
Ping-Wah Tang - Rochester NY
Philip T. S. Lau - Rochester NY
Stanley W. Cowan - Rochester NY
Harold I. Machonkin - Webster NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 732
G03C 734
G03C 736
G03C 738
US Classification:
430548
Abstract:
Color photographic elements contain polymeric dye-forming couplers in which the coupler moiety is joined to the polymer backbone via a linking group containing an ether moiety. Increased dye density yield is obtained.

Photographic Developing Composition Containing A Sludge Inhibiting Agent And Use Thereof In The High Contrast Development Of Nucleated Photographic Elements

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US Patent:
56838590, Nov 4, 1997
Filed:
May 20, 1996
Appl. No.:
8/650675
Inventors:
Ronald Joseph Nothnagle - Webster NY
Jeffrey Richard Sefl - Byron NY
Harold Ihor Machonkin - Webster NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G03C 5305
US Classification:
430488
Abstract:
An improved photographic developing composition, for use in development of a black-and-white silver halide photographic element, is comprised of at least one developing agent and, in an amount sufficient to inhibit sludge deposition, mercapto thiadiazole glycerol propoxylate. The developing composition is broadly useful in black-and-white development but is most advantageously employed in a process for forming a high-contrast image utilizing a silver halide photographic element comprising a hydrazine compound which functions as a nucleating agent and an amino compound which functions as an incorporated booster.
Harold I Machonkin from Homosassa, FL, age ~92 Get Report