Patents by Inventor Stephen R. Postle
Stephen R. Postle 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: 20120090488Abstract: Spot colors reproduce high value brand colors to supplement conventional process colors for printed images and packaging A printing press can utilize hi-fidelity process inks with at least three unique colors and black, and spot colors for printing solid brand colors and for printing over other colors to produce wide-gamut, half-toned color reproductions printing logos on a substrate includes (i) printing the spot colors using spot inks, and (u) printing the remainder of the image using a substituted original process ink set.Type: ApplicationFiled: April 28, 2010Publication date: April 19, 2012Applicant: Sun Chemical CorporationInventors: Stephen R. Postle, Danny C. Rich, Andrew Hadaway
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Patent number: 7268918Abstract: The present invention provides a plurality of representations of color that are stored in an electronic color library and that can be selected by a user. After a color selection is made, a plurality of color ink formulas and/or colorant formulas capable of producing the selected color are provided. Further, other selections can be made to define a substrate or other criteria that can impact the color ink formulas. A plurality of color ink and/or colorant formulas are provided and optimized in order to reduce or eliminate undesired effects caused by metamerism. The formulas can be transmitted over a communication network, such as the Internet or a local Intranet to another party, such as color products manufacturers.Type: GrantFiled: June 1, 2004Date of Patent: September 11, 2007Assignee: Sun Chemical CorporationInventors: Stephen R. Postle, Danny C. Rich, Lowell D. Wilson
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Patent number: 4992346Abstract: There is described a method of processing exposed holographic material to obtain holograms having a broader band replay a hologram which is of the silver halide in gelatin binder type which method comprises holographically exposing the holographic material by use of coherent light, developing the holographic image by a chemical process and then treating the material sequentially either firstly with a solution of an anionic surfactant which comprises at least one alkyl group having at least four carbon atoms and then with a solution of a quaternary ammonium compound which comprises at least one alkyl group having from 10 to 18 carbon atoms or a polymeric compound which comprises at least one quaternary ammonium group in the repeating unit or firstly with a solution of said quaternary ammonium compound or polymeric compound and then with a solution of an anionic surfactant, the material being subjected to a silver bleaching step at one stage after development.Type: GrantFiled: December 19, 1989Date of Patent: February 12, 1991Assignee: Ilford LimitedInventors: Neil F. Ashford, Peter M. Blum, Stephen R. Postle, Alan Hodgson
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Patent number: 4977047Abstract: A method of preparing a hologram which is of the silver halide in gelatin binder type which method comprises holographically exposing the holographic material by use of coherent light, developing the holographic image by a chemical process and wherein after development the material is treated with an aqueous solution of an anionic surfactant which comprises at least one alkyl group having at least four carbon atoms, to achieve bathochromic shift in the replay wavelength.Type: GrantFiled: March 1, 1989Date of Patent: December 11, 1990Assignee: Ilford LimitedInventors: Neil F. Ashford, Alan Hodgson, Peter M. Blum, Stephen R. Postle
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Patent number: 4791155Abstract: An assembly for monitoring ionising radiation which comprises coated on a base a binder layer containing a polychlorinated hydrocarbon and a color former.The assembly can be used to monitor levels of radiation of from 0.1 MRads to 10.0 MRads.Type: GrantFiled: July 22, 1987Date of Patent: December 13, 1988Assignee: Ciba-Geigy AGInventors: David P. Gregory, Bernard J. Dean, Stephen R. Postle
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Patent number: 4668359Abstract: A diagnostic strip which comprises a base having coated thereon a dried layer which has been formed by coating onto the base an aqueous solution which comprises from 0.5 to 2.0% by weight of agarose and from 0.5 to 3.0% by weight of non-cross linked polyacrylamide or polyvinyl alcohol or a mixture of these polymers, the dried layer being 0.1 to 100 .mu.m thick and comprising 10 to 50% by weight solids.Type: GrantFiled: May 9, 1986Date of Patent: May 26, 1987Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Peter J. Elton, David P. Gregory, Janice Butcher
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Patent number: 4649026Abstract: A method of preparing a diagnostic strip coated with agarose which comprises preparing a roll of web material so that an aqueous silver halide emulsion can adhere thereto on one side thereof, but which does not have a gelatin or any other proteinaceous layer on the prepared side then coating on the prepared side of the web by a continuous web coating method a layer of an aqueous agarose solution at a temperature of at least 40.degree. C., drying the coated agarose layer to provide a dried layer thickness of from 0.1 to 100 .mu.m which is dry to touch, but which comprises 10 to 50% w/w solids and cutting the coated web into strips of the required size.Type: GrantFiled: November 8, 1985Date of Patent: March 10, 1987Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Peter J. Elton, David P. Gregory
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Patent number: 4643588Abstract: A method of monitoring if a stored product has exceeded a predetermined temperature using an assembly, which comprises coated onto a carrier a gelatin layer containing an acidic reactant, color former and an encapsulated non-aqueous solvent.Type: GrantFiled: April 2, 1985Date of Patent: February 17, 1987Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Roy P. Barber
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Patent number: 4609620Abstract: Compounds of the formula ##STR1## where Y is a tertiary group, X is hydrogen or a leaving group, and Q is hydrogen, amidino, alkyl or aryl, there being present in Y or Q a ballasting group which comprises 10 to 30 carbon atoms, exhibit a high secondary absorption in the blue region of the visible spectrum and are useful couplers in chromogenic monochrome negative material.Type: GrantFiled: April 9, 1985Date of Patent: September 2, 1986Assignee: Ciba Geigy AGInventors: Stephen R. Postle, William E. Long
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Patent number: 4578305Abstract: A photochromic assembly is produced by coating onto a self-supporting flexible plastics material a polymer latex comprising from 10 to 40% by weight to the total solids of the latex photochromic glass beads from 0.05 .mu.m to 50 .mu.m in size.Type: GrantFiled: May 7, 1984Date of Patent: March 25, 1986Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Samuel B. Kingston
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Patent number: 4560646Abstract: Compounds of the formula ##STR1## wherein L is a direct bond or consists of a chain of carbon atoms or of a divalent ring system, R.sub.1 to R.sub.4 are hydrogen or alkyl, R.sub.5 or R.sub.6 are hydrogen, alkyl or aryl, or R.sub.5 together with R.sub.6 complete a ring system, and R.sub.7 is hydrogen or a group of the formula ##STR2## wherein L, R.sub.5 and R.sub.6 are as defined. These compounds are useful developing agents for activation processing.Type: GrantFiled: November 21, 1984Date of Patent: December 24, 1985Assignee: Ciba Geigy AGInventors: William E. Long, Norman A. Smith, Terence C. Webb, Stephen R. Postle, Kenneth M. McCombe, Martin C. Grossel
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Patent number: 4489108Abstract: A photochromic assembly is produced by coating onto a self-supporting flexible plastics material a polymer latex comprising from 10 to 40% by weight of the total solids of the latex photochromic glass beads from 0.05 .mu.m to 50 .mu.m in size.Type: GrantFiled: March 2, 1983Date of Patent: December 18, 1984Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Samuel B. Kingston
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Patent number: 4481252Abstract: A transparent sheet material which is suitable for projection on overhead projectors comprises coated onto a support a binder layer containing discrete particles of an organic polymer which has substantially the same refractive index as the binder, the polymer comprising from 0.5 to 30% by weight of the binder.The coating gives a good key for typewritten characters produced by carbon ribbon or ink ribbon typewriters, for writing with e.g. ball-point pen, pencil, water or solvent based ink pens, Indian ink and inked rubber stamps.Type: GrantFiled: November 19, 1982Date of Patent: November 6, 1984Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, James Doyle
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Patent number: 4480104Abstract: Compounds of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are hydrogen or alkyl, X represents the atoms to complete an aromatic heterocyclic ring system and Y is hydrogen or has the meaning assigned to X, are readily cleaved in alkaline solutions to release a hydroquinone derivative.The compounds can be incorporated into photographic materials used for activation processing.Type: GrantFiled: May 15, 1983Date of Patent: October 30, 1984Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Patrick D. P. Thomas
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Patent number: 4446216Abstract: Photographic material which comprises in at least one silver halide emulsion layer or a layer or layers adjacent thereto at least one substituted hydroquinone compound of the formula ##STR1## where R is hydrogen or optionally substituted alkyl, aryl or a heterocyclic group, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each hydrogen, halogen or optionally substituted alkyl,x is 0 or 1,y is 0 or 1,and R.sub.1 is hydrogen or a group of the formula ##STR2## where R, x and y are as just defined.Type: GrantFiled: November 23, 1982Date of Patent: May 1, 1984Inventors: Norman A. Smith, Stephen R. Postle, William E. Long
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Patent number: 4444939Abstract: Photochromic paint comprising a latex of an acrylate and/or a methacrylate polymer, the polymer particles of which constitutes 30 to 50% by weight of the latex and which has been prepared using a copolymerizable surfactant, there being dispersed in the latex photochromic glass beads of from 0.05 to 1.00 .mu.m in size and which comprises from 10 to 30% by weight of the latex, the total solids content of the latex being from 40 to 60% by weight. The paint may be coated on to any surface which will accept a water-based paint.Type: GrantFiled: March 2, 1983Date of Patent: April 24, 1984Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Samuel B. Kingston
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Patent number: 4443537Abstract: Substituted hydroquinone compounds of the formula ##STR1## wherein R.sub.1 to R.sub.4 are hydrogen or alkyl and Z is an aromatic ring or a group of the formula --X--Y--X--, wherein X is an aromatic ring and Y is an electron withdrawing group, are incorporated as developers into photographic materials. These materials are suitable for activation processings.Type: GrantFiled: September 24, 1982Date of Patent: April 17, 1984Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Patrick D. P. Thomas, Brian R. D. Whitear
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Patent number: 4439518Abstract: Process for the production of a photographic black dye image which comprises(a) imagewise exposing photographic silver halide material comprising at least one silver halide emulsion layer coated on a support, there being present in the silver halide emulsion layer(s) or in a layer in operative contact with at least one silver halide emulsion layer a resorcinol compound of the formula ##STR1## where each of W, Y and Z is hydrogen, chlorine or bromine, a nitrogen-linked heterocycle, --SR.sub.1 where R.sub.1 is alkyl, aryl or a heterocycle or W, Y or Z is acylamino or --R.sub.3 where --R.sub.3 is alkyl, cycloalkyl or aralkyl or Z alone is --CO--R.sub.1 where R.sub.1 is as just defined but at least one of W, Y and Z must be --R.sub.3, and X which is the coupling position is hydrogen, chlorine or bromine, a nitrogen-linked heterocycle or --SR.sub.Type: GrantFiled: June 18, 1982Date of Patent: March 27, 1984Assignee: Ciba-Geigy A.G.Inventor: Stephen R. Postle
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Patent number: 4426444Abstract: Compounds of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are hydrogen or alkyl, X represents the atoms to complete an aromatic heterocyclic ring system and Y is hydrogen or the group ##STR2## where X is defined as above, are readily cleaved in alkaline solutions to release a hydroquinone derivative.The compounds can be incorporated into photographic materials used for activation processing.Type: GrantFiled: September 17, 1982Date of Patent: January 17, 1984Assignee: Ciba Geigy AGInventors: Stephen R. Postle, Patrick D. P. Thomas
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Patent number: 4417072Abstract: Substituted hydroquinone compounds of the formula ##STR1## wherein R.sub.1 to R.sub.4 are hydrogen or alkyl and Z is an aromatic ring or a group of the formula --X--Y--X--, wherein X is an aromatic ring and Y is an electron withdrawing group, are incorporated as developers into photographic materials. These materials are suitable for activation processings.Type: GrantFiled: September 29, 1981Date of Patent: November 22, 1983Assignee: Ciba-Geigy AGInventors: Stephen R. Postle, Patrick D. P. Thomas, Brian R. D. Whitear