Patents by Inventor Stephen A. Hershey
Stephen A. Hershey has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20070087295Abstract: A radiographic material containing tabular silver halide grains also includes an amido compound as an antifoggant precursor that can slowly release an antifoggant over time. These compounds are present in reactive association with the silver halide in tabular silver halide emulsion layers, and are present in an amount of at least 0.5 mmol/mol of silver. The radiographic materials are protected from fog during storage particularly in high temperature environments.Type: ApplicationFiled: October 3, 2005Publication date: April 19, 2007Inventors: Robert Dickerson, George Burgmaier, Steven Szatynski, Stephen Hershey
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Publication number: 20070070918Abstract: In certain embodiments, a first node among a plurality of distributed nodes capable of forming or reforming a communication network between the nodes, each of the nodes including one or more transceivers, includes a memory for storing values for variables for the first node and includes a plurality of transceivers.Type: ApplicationFiled: September 27, 2005Publication date: March 29, 2007Inventor: Stephen Hershey
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Patent number: 7189502Abstract: A radiographic material containing tabular silver halide grains also includes an amido compound as an antifoggant precursor that can slowly release an antifoggant over time. These compounds are present in reactive association with the silver halide in tabular silver halide emulsion layers, and are present in an amount of at least 0.5 mmol/mol of silver. The radiographic materials are protected from fog during storage particularly in high temperature environments.Type: GrantFiled: October 3, 2005Date of Patent: March 13, 2007Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, George J. Burgmaier, Steven P. Szatynski, Stephen A. Hershey
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Patent number: 6908730Abstract: This invention relates to a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith: (a) a first dye (Dye 1) that is a cyanine dye capable of spectrally sensitizing a silver halide emulsion and that has at least one anionic substituent; and (b) a second dye (Dye 2) that is not a cyanine dye and that has at least one cationic substituent. Dye 2 has a log P, excluding any counterion, of less than 4.00 and greater than 1.00 or Dye 2 is represented by a dye of formula II as described herein.Type: GrantFiled: January 17, 2003Date of Patent: June 21, 2005Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Thomas L. Penner, David R. Foster, Stephen A. Hershey
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Patent number: 6794105Abstract: A radiographic silver halide film useful for mammography comprises a support having a cubic grain silver halide emulsion on one side. The cubic grains are spectrally sensitized with a combination of first and second spectral sensitizing dyes that provides a combined maximum J-aggregate absorption of from about 540 to about 560 nm. The first spectral sensitizing dye is an anionic benzimidazole-benzoxazole carbocyanine and the second spectral sensitizing dye is an anionic oxycarbocyanine. The first and second spectral sensitizing dyes are present in a molar ratio of from about 0.25:1 to about 4:1.Type: GrantFiled: May 19, 2003Date of Patent: September 21, 2004Assignee: Eastman Kodak CompanyInventors: Anthony Adin, Stephen A. Hershey, Robert E. Dickerson
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Publication number: 20040146818Abstract: This invention relates to a silver halide photographic material comprising at least one silver halide emulsion comprising silver halide grains having associated therewith:Type: ApplicationFiled: January 17, 2003Publication date: July 29, 2004Inventors: Richard L. Parton, Thomas L. Penner, David R. Foster, Stephen A. Hershey
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Publication number: 20040096768Abstract: A radiographic silver halide film useful for mammography comprises a support having a cubic grain silver halide emulsion on one side. The cubic grains are spectrally sensitized with a combination of first and second spectral sensitizing dyes that provides a combined maximum J-aggregate absorption of from about 540 to about 560 nm. The first spectral sensitizing dye is an anionic benzimidazole-benzoxazole carbocyanine and the second spectral sensitizing dye is an anionic oxycarbocyanine. The first and second spectral sensitizing dyes are present in a molar ratio of from about 0.25:1 to about 4:1.Type: ApplicationFiled: May 19, 2003Publication date: May 20, 2004Applicant: Eastman Kodak CompanyInventors: Anthony Adin, Stephen A. Hershey, Robert E. Dickerson
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Patent number: 6727055Abstract: A radiation-sensitive emulsion is disclosed comprised of cubic silver iodochlorobromide grains comprising 0.25 to about 1.5 mol % iodide, 1 to about 25 mol % chloride, and from about 73.5 to 98.75 mol % bromide, each based on total silver in the emulsion, wherein the grains have an average equivalent circular diameter of greater than 0.6 micrometers and contain from 10−7 to 10−3 mole per silver mole of a metal ion coordination complex dopant of Formula (I) in an internal region of the grains formed after 10 percent and before 95 percent of the total grain silver has been precipitated: [ML6]n (I) wherein n is zero, −1, −2, −3 or −4, M is a filled frontier orbital polyvalent metal ion, other than iridium, and L6 represents bridging ligands which can be independently selected, provided that at least four of the ligands are anionic ligands, and at least one of the ligands is a cyano ligand or a ligand more electronegative than a cyano ligand.Type: GrantFiled: November 19, 2002Date of Patent: April 27, 2004Assignee: Eastman Kodak CompanyInventors: Anthony Adin, Richard E. Beal, Anthony D. Gingello, Stephen A. Hershey, John D. Mee, Myra T. Olm
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Patent number: 6686116Abstract: A blue-sensitive radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;m, and comprise at least 90 mol % bromide and up to 4 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer. The tabular silver halide grains are spectrally sensitized using a combination of spectral sensitizing dyes to provide increased speed and reduced dye stain.Type: GrantFiled: March 26, 2003Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Anthony Adin, Stephen A. Hershey, Richard F. Davis
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Patent number: 6662330Abstract: ARQ protocol useful for transferring delay-sensitive data blocks between sending and receiving devices (102, 104) over an error-prone communication link (116). The ARQ protocol allows either the sender or receiver to initiate termination of the transfer from sender to receiver of one or more blocks. Blocks eligible for negative acknowledgement by a receiving device are determined by a reception determination procedure performed by the sending device. Negative acknowledgement of eligible blocks is based on a number of consecutive blocks reported as corrupt, which number may include an allowable number of non-corrupt blocks. The allowable number of non-corrupt blocks is based on a Minimum Corruption Density (MCD) parameter that may be adjusted by a receiving device depending on available bandwidth for retransmission of blocks or other criteria.Type: GrantFiled: April 7, 2000Date of Patent: December 9, 2003Assignee: Motorola, Inc.Inventor: Stephen Hershey
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Publication number: 20030152030Abstract: A method and system for performing delayed connection release in a connection-oriented data link layer communications protocol, including a second node that establishes a return data link connection with a first node prior to an initial transmission of data from the first node to the second node and delays a release of the return data link connection after a last transmission of data from the first node to the second node. The second node also establishes a forward data link with the first node prior to an initial transmission of data from the second node to the first node and delays a release of the forward data link connection after a last transmission of data from the second node to the first node. The first node may be configured as a terminal and the second node may be configured as a base station over a wireless data link and the first node may be configured as a client and the second node may be configured as a server over a wired data link.Type: ApplicationFiled: February 12, 2002Publication date: August 14, 2003Inventor: Stephen Hershey
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Publication number: 20030035383Abstract: A computer-implemented method, system and computer program product for demanding a data link resource in a communications network, including calculating an unsatisfied demand (UD) value for the data link resource at a terminal and transmitting the calculated UD value over the data link from the terminal to a base station at a time uncorrelated with a time at which new demand for the data link resource is detected by the terminal. The UD value is calculated as UD=NUM_RLC_BLK_UNSENT+NUM_RLC_BLK_NACK, where NUM_RLC_BLK_UNSENT is a number of radio link control (RLC) blocks not yet sent and NUM_RLC_BLK_NACK is a number of RLC blocks negatively acknowledged by the base station. The UD value is received from the terminal at the base station over the data link. The base station calculates an imputed unsatisfied demand (IUD) value based on the received UD value and existing data link resources already allocated to the terminal and transmits the calculated IUD value to a data link resource scheduler.Type: ApplicationFiled: September 26, 2001Publication date: February 20, 2003Inventor: Stephen Hershey
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Patent number: 6312883Abstract: A silver halide photographic material comprises at least one silver halide emulsion comprising silver halide grains having associated therewith at least two dyes: (a) a first dye that has at least one anionic substituent and that is capable of spectrally sensitizing a silver halide emulsion; and (b) a second dye of formula II wherein: R1 is a substituted or unsubstituted alkyl or aryl group; E3 represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic nucleus; Ar1 represents an electron-withdrawing substituted aryl, or a substituted or unsubstituted electron-withdrawing heteroaryl group; L11 through L14 are substituted or unsubstituted methine groups; s is 0 or 1; G1 is an electron-withdrawing group; G2 is O or dicyanovinyl (C(CN)2); W1 is a counterion if necessary.Type: GrantFiled: June 22, 2000Date of Patent: November 6, 2001Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Thomas L. Penner, Stephen A. Hershey
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Patent number: 6174657Abstract: A photothermographic element comprises: (a) a support bearing on one surface thereof (b) a photosensitive emulsion layer (i) a binder; (ii) a light-insensitive organic silver salt, (iii) a reducing agent, and (iv) a photosensitive silver halide emulsion; (c) an antihalation dye incorporated in the emulsion layer, in a polymer layer under the photosensitive layer, in the support, or in a backside polymer layer; and (d) one or more tinting dyes such that the final color space of the film lies within the range defined by 220°<hab<260°, where hab is the psychometric hue angle, hab=arctan(b*/a*), as defined in the CIELAB color system.Type: GrantFiled: June 24, 1998Date of Patent: January 16, 2001Assignee: Eastman Kodak CompanyInventors: Charles H. Weidner, Dorothy T. Java, Stephen A. Hershey, Elizabeth K. Priebe
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Patent number: 6042986Abstract: Portal localization radiographic elements and a process of confirming the targeting of a beam of X-radiation of from 4 to 25 MVp using the portal radiographic elements are disclosed. The X-radiation is directed at a subject containing features that are identifiable by differing levels of X-radiation absorption. After a first X-radiation exposure a shield containing a portal is placed between the subject and the source of X-radiation. X-radiation is directed at the subject through the portal. In each instance the X-radiation leaving the subject impinges on a metal screen, causing it to emit electrons, and the electrons impinge upon a fluorescent screen, causing it to emit light, creating during the first and second exposures first and second superimposed latent images in the radiographic element.Type: GrantFiled: April 29, 1998Date of Patent: March 28, 2000Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Stephen A. Hershey, James C. Bolthouse
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Patent number: 5952147Abstract: Portal radiographic elements and a process of confirming the targeting of a beam of X-radiation of from 4 to 25 MVp using the portal radiographic elements are disclosed. The X-radiation is directed at a shield containing a port to create a beam. The beam is directed at a selected anatomical feature of a patient over a period of at least 30 seconds. The portion of the beam that passes through the patient impinges on a metal screen, causing it to emit electrons, and the electrons impinge upon a fluorescent screen, causing it to emit light that exposes a portal verification radiographic element to create a latent image in light-sensitized silver halide grains. A processor is employed to convert the latent image to a viewable silver image from which intended targeting of the X-radiation beam can be verified.Type: GrantFiled: April 29, 1998Date of Patent: September 14, 1999Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Stephen A. Hershey, James C. Bolthouse
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Patent number: 5876909Abstract: The problem of sensing the presence of radiographic elements using infrared sensors that occurs when a radiographic element contains one or more very thin tabular grain emulsions a total silver coating coverage of less than 30 mg/dm.sup.2 is addressed by placing particles in one or more non-emulsion hydrophilic colloid layers. The particles are removable during rapid access processing, have a mean equivalent circular diameter of from 0.3 to 1.1 .mu.m, and have an index of refraction at the wavelength of the infrared radiation that differs from the index of refraction of the hydrophilic colloid by at least 0.2.Type: GrantFiled: September 19, 1997Date of Patent: March 2, 1999Assignee: Eastman Kodak CompanyInventors: Stephen A. Hershey, James C. Bolthouse, Robert E. Dickerson
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Patent number: 5773206Abstract: An element capable of forming a silver image is disclosed containing insufficient radiation-sensitive silver halide grains to render the element detectable by an infrared sensor. The element has been modified to increase infrared specular density by the inclusion of, in a hydrophilic colloid dispersing medium, particles (a) being removable from the element during a rapid access processing cycle, (b) having a mean size of from 0.3 to 1.1 .mu.m and at least 0.1 .mu.m larger than the mean grain size of the radiation-sensitive grains, and (c) having an index of refraction at the wavelength of the infrared radiation that differs from the index of refraction of the hydrophilic colloid by at least 0.2.Type: GrantFiled: April 21, 1997Date of Patent: June 30, 1998Assignee: Eastman Kodak CompanyInventors: Stephen A. Hershey, James C. Bolthouse, Robert E. Dickerson
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Patent number: 5637447Abstract: A radiation-sensitive film for reproducing digitally stored medical diagnostic images through a series of laterally offset exposures by a controlled radiation source followed byprocessing in 90 seconds or less including development, fixing and drying is disclosed. The film exhibits an average contrast in the range of from 1.5 to 2.0, measured over a density above fog of from 0.25 to 2.0. An emulsion is provided in which silver bromochloride grains provided (a) containing at least 10 mole percent bromide, based on silver, (b) having a mean equivalent circular diameter of less than 0.40 .mu.m, (c) exhibiting an average aspect ratio of less than 1.3, and (d) coated at a silver coverage of less than 40 mg/dm.sup.2. Adsorbed to the surfaces of the silver bromochloride grains is at least one spectral sensitizing dye having an absorption half peak bandwidth in the spectral region of exposure by the controlled exposure source.Type: GrantFiled: December 19, 1995Date of Patent: June 10, 1997Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Richard E. Beal, Franklin C. Brayer, Stephen A. Hershey, Patrick M. Jeffries
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Patent number: 5314790Abstract: Monocyclic and polycyclic azoles having the following formula modify the tone of a silver image formed from a fine grain radiation sensitive silver chlorobromide emulsion layer in which the silver chlorobromide grains have a mean equivalent circular diameter of less than 0.3 .mu.m. The azoles have the formula: ##STR1## wherein Z is --N.dbd. or --C(R.sup.5).dbd. where R.sup.5 is hydrogen, --NH.sub.2, aliphatic of 1 to 8 carbon atoms or aromatic of 1 to 8 carbon atoms;R.sup.4 is hydrogen, aliphatic of 1 to 8 carbon atoms or aromatic of 1 to 8 carbon atoms;R.sup.4 and R.sup.5 together complete a 5 or 6 membered heterocyclic nucleus containing 1 to 3 ring nitrogen atoms;L is a divalent aliphatic linking group containing 1 to 8 carbon atoms;T is an aliphatic terminal group containing 1 to 8 carbon atoms;m is 0 or 1;n is an integer of 1 to 4; andp is an integer of 2 to 4.Type: GrantFiled: June 3, 1992Date of Patent: May 24, 1994Assignee: Eastman Kodak CompanyInventors: Stephen A. Hershey, J. Ramon Vargas, Paul A. Burns