Patents by Inventor Terrance P. Smith
Terrance P. Smith 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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Patent number: 5840106Abstract: Water-based pigmented inks are disclosed. Such inks are formed from water-based dispersions of pigment particles having novel dispersants therein. The dispersions are formed from the reaction product of an alkenyl azlactone with an N-substituted amino acid compound. Subsequent to the reaction, the reaction product is ring-opened using an amine and, optionally, hydrolyzed. The resulting inks are well-suited for use in ink jet and other printing applications.Type: GrantFiled: November 13, 1995Date of Patent: November 24, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Larry R. Krepski, Richard J. Kuo, Prabhakara S. Rao, Terrance P. Smith
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Patent number: 5741620Abstract: Reactive polymeric dyes are provided comprising a chromophoric moiety derived from at least one free radically polymerizable dye and an azlactone moiety derived from 2-alkenylazlactone such that the free radically polymerizable dye is incorporated into the backbone of the polymer. Alternatively, 2-alkenylazlactone is polymerized and then derivatized with a nucleophilic dye or dyes, such that the chromophoric potion of the dye is pendent to the polymer backbone. Both types of reactive polymeric dyes may also contain additional polymerized monomeric units. The reactive polymeric dyes of the present invention can be used in a photoresist system and in particular in a color proofing construction.Type: GrantFiled: January 16, 1996Date of Patent: April 21, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gary L. Holmes, Terrance P. Smith, Mahfuza B. Ali, David W. Macomber
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Patent number: 5714632Abstract: A compound of the formula ##STR1## wherein Q is an organic group of at least two carbon atoms having at least m substituents,m is 1, 2, 3, 4, 5 or 6, andn is 0 or 1.R.sup.3 is H or methyl,R.sup.8 and R.sup.9 are independently hydrogen, alkyl group or aryl,R.sup.12 and R.sup.13 are independently selected from the group consisting of an alkyl group or a cation, andR.sup.10 is independently selected from the group consisting of hydrogen, an alkyl group, aryl group, and highly-fluorinated alkyl group,R.sup.4 may be hydrogen or alkyl group, andR.sup.7 may be hydrogen or lower alkyl group, provides excellent stability to dispersions.Type: GrantFiled: November 13, 1995Date of Patent: February 3, 1998Assignee: Minnesota Mining And Manufacturing CompanyInventors: Prabhakara S. Rao, Larry R. Krepski, Terrance P. Smith
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Patent number: 5663024Abstract: Polymeric dyes that comprise (a) segments that render the dyes soluble or dispersible in hydrocarbon solvents and (b) segments that impart color. The polymeric dyes can be introduced into hydrocarbon solvents or formed in hydrocarbon solvents to form stable colored dispersions, which can be used as toners for electrophotography. In these toners, the polymeric dye contains macromeric moieties that render the polymeric dye dispersible in hydrocarbon solvents. The polymeric dye may contain either a charge-directing chelating moiety or a surface-release promoting moiety or both of these moieties.Type: GrantFiled: November 1, 1996Date of Patent: September 2, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Terrance P. Smith, S. Prabhakara Rao, David W. Macomber
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Patent number: 5599886Abstract: Polymeric dyes that comprise (a) segments that render the dyes soluble or dispersible in hydrocarbon solvents and (b) segments that impart color. The polymeric dyes can be introduced into hydrocarbon solvents or formed in hydrocarbon solvents to form stable colored dispersions, which can be used as toners for electrophotography. In these toners, the polymeric dye contains macromeric moieties that render the polymeric dye dispersible in hydrocarbon solvents. The polymeric dye may contain either a charge-directing chelating moiety or a surface-release promoting moiety or both of these moieties.Type: GrantFiled: February 22, 1996Date of Patent: February 4, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Terrance P. Smith, S. Prabhakara Rao, David W. Macomber
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Patent number: 5532111Abstract: Reactive polymeric dyes are provided comprising a chromophoric moiety derived from at least one free radically polymerizable dye and an azlactone moiety derived from 2-alkenylazlactone such that the free radically polymerizable dye is incorporated into the backbone of the polymer. Alternatively, 2-alkenylazlactone is polymerized and then derivatized with a nucleophilic dye or dyes, such that the chromophoric portion of the dye is pendent to the polymer backbone. Both types of reactive polymeric dyes may also contain additional polymerized monomeric units. The reactive polymeric dyes of the present invention can be used in a photoresist system and in particular in a color proofing construction.Type: GrantFiled: November 4, 1994Date of Patent: July 2, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gary L. Holmes, Terrance P. Smith, Mahfuza B. Ali, David W. Macomber
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Patent number: 5530067Abstract: Electrostatic toners comprising polymeric dyes comprising of (1) discrete segments that are dispersible in highly fluorinated solvents and (2) discrete color-imparting segments. These toners can be prepared by a means of a polymerization process, wherein macromers containing highly fluorinated dispersible segments are grafted onto a polymer having chromophores attached thereto.Type: GrantFiled: May 17, 1994Date of Patent: June 25, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: S. Prabhakara Rao, Terrance P. Smith
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Patent number: 5530053Abstract: Electrostatic toners comprising polymeric dyes comprising of (1) discrete segments that are dispersible in highly fluorinated solvents and (2) discrete color-imparting segments. These toners can be prepared by a means of a polymerization process, wherein macromers containing highly fluorinated dispersible segments are grafted onto a polymer having chromophores attached thereto.Type: GrantFiled: May 24, 1995Date of Patent: June 25, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: S. Prabhakara Rao, Terrance P. Smith
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Patent number: 5521142Abstract: A thermal transfer dye donor element containing at least one substrate coated with a layer containing binder and at least one .beta.-cyano-.beta.-trifluoromethanesulfonyl-p-N,N-dialkylaminostyrene yellow dye. Also disclosed is a process for the imagewise transfer of the yellow dye to a receiving element.Type: GrantFiled: September 14, 1995Date of Patent: May 28, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Kevin D. Landgrebe, Terrance P. Smith, Jeffrey C. Chang
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Patent number: 5521035Abstract: Color filter elements are prepared by the laser induced thermal transfer of colorant from a color donor to a transparent, non-birefringent substrate such as glass or polymeric film. Transparent pigments which are less prone to migration, more thermally stable, and considerably more lightfast than dyes can be used to prepare the color filter elements of this invention. Color filter elements are useful for elements in color displays such as liquid crystal display devices.Type: GrantFiled: July 11, 1994Date of Patent: May 28, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Martin B. Wolk, Thomas A. Isberg, Kenneth L. Hanzalik, Jeffrey C. Chang, Richard E. Bills, William V. Dower, Terrance P. Smith
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Patent number: 5521271Abstract: Polymeric dyes that comprise (a) segments that render the dyes soluble or dispersible in hydrocarbon solvents and (b) segments that impart color. The polymeric dyes can be introduced into hydrocarbon solvents or formed in hydrocarbon solvents to form stable colored dispersions, which can be used as toners for electrophotography. In these toners, the polymeric dye contains macromeric moieties that render the polymeric dye dispersible in hydrocarbon solvents. The polymeric dye may contain either a charge-directing chelating moiety or a surface-release promoting moiety or both of these moieties.Type: GrantFiled: September 29, 1994Date of Patent: May 28, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Terrance P. Smith, S. Prabhakara Rao, David W. Macomber
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Patent number: 5461155Abstract: Metal-Azomethine dyes with excellent solubility in organic media. The dyes have an arene nucleus and are substituted, in part, with a non-free-radically polymerizable alkyldiketonate or 8-hydroxyquinolate ligand. The dyes are useful in dye diffusion transfer processes.Type: GrantFiled: April 19, 1995Date of Patent: October 24, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Terrance P. Smith, David W. Macomber
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Patent number: 5405822Abstract: A thermal dye transfer imaging element comprising a continuous layer of a mixture of two or more dyes comprising at least one blue dye having a central nucleus represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom or C1-C16 alkyl group, and R.sub.3 represents a hydrogen atom of C1-C6 alkyl group and at least one green dye having a central nucleus represented by the following formula (II): ##STR2## wherein R.sub.4 through R.sub.9 each represents a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, or an aryloxy group in a polymeric binder, said mixture comprising up to 99% by weight of the total weight of dye and binder, said continuous layer being bonded to a substrate.Type: GrantFiled: December 29, 1993Date of Patent: April 11, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Kevin D. Landgrebe, Jeffrey C. Chang, Terrance P. Smith
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Polymeric bland of a matrix resin and absorbent resin and a multivalent metal ion crosslinking agent
Patent number: 5376727Abstract: A composition comprising a blend of (a) a polymeric matrix component comprising crosslinkable polymers made from 80 to 99 parts by weight of at least one .alpha.,.beta.-ethylenically unsaturated monomer and from 1 to 20 parts by weight of at least one chelating compound, (b) a liquid-absorbent component comprising a water-absorbent, preferably water-soluble, polymer, and (c) a multivalent metal ion as a crosslinking agent. This composition is capable of forming liquid-absorbent, semi-interpenetrating networks. The composition of this invention can provide polymeric matrices which, when coated on a transparent backing, result in transparent coatings capable of providing improved combinations of ink absorption and durability, while at the same time retaining transparency and being amenable to the types of processing commonly used in producing transparent graphical materials.Type: GrantFiled: July 9, 1993Date of Patent: December 27, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mohammad Iqbal, Terrance P. Smith, Stofko, Jr. -
Patent number: 5362812Abstract: Reactive polymeric dyes are provided comprising a chromophoric moiety derived from at least one free radically polymerizable dye and an azlactone moiety derived from 2-alkenylazlactone such that the free radically polymerizable dye is incorporated into the backbone of the polymer. Alternatively, 2-alkenylazlactone is polymerized and then derivatized with a nucleophilic dye or dyes, such that the chromophoric portion of the dye is pendent to the polymer backbone. Both types of reactive polymeric dyes may also contain additional polymerized monomeric units. The reactive polymeric dyes of the present invention can be used in a photoresist system and in particular in a color proofing construction.Type: GrantFiled: April 23, 1993Date of Patent: November 8, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gary L. Holmes, Terrance P. Smith, Mahfuza B. Ali, David W. Macomber
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Patent number: 5342645Abstract: A cartridge useful in detecting fingerprints includes a housing with a chamber therein and an outlet from the chamber. The chamber contains a thermally stable porous or fibrous support impregnated with both:1 ) a cyanoacrylate ester, and2) a volatile, emissive lanthanide metal-complex or actinide metal-complex. Upon the application of sufficient heat to the support, the cyanoacrylate and metal complex volatilize and co-deposit on fingerprint residue to enhance the visualization of the fingerprint.Type: GrantFiled: September 15, 1993Date of Patent: August 30, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: John F. Eisele, Terrance P. Smith, Michael C. Palazzotto
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Patent number: 5314998Abstract: Metal-azo dyes with excellent solubility in organic media are provided. The metal-containing dyes of the present invention have a nucleus of the formula: ##STR1## wherein the substituents have the meaning given in the description. Dye-donor sheets comprising the above-mentioned dyes are also disclosed.Type: GrantFiled: September 8, 1992Date of Patent: May 24, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Terrance P. Smith, David W. Macomber
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Patent number: 5241006Abstract: A composition comprising a blend of (a) a polymeric matrix component comprising crosslinkable polymers made from 80 to 99 parts by weight of at least one .alpha.,.beta.-ethylenically unsaturated monomer and from 1 to 20 parts by weight of at least one chelating compound, (b) a liquid-absorbent component comprising a water-absorbent, preferably water-soluble, polymer, and (c) a multivalent metal ion as a crosslinking agent. This composition is capable of forming liquid-absorbent, semi-interpenetrating networks. The composition of this invention can provide polymeric matrices which, when coated on a transparent backing, result in transparent coatings capable of providing improved combinations of ink absorption and durability, while at the same time retaining transparency and being amenable to the types of processing commonly used in producing transparent graphical materials.Type: GrantFiled: October 24, 1990Date of Patent: August 31, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mohammad Iqbal, Terrance P. Smith, John J. Stofko, Jr.
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Patent number: 5180705Abstract: Dye donor sheets comprising a substrate having a coating comprising a binder and at least one neutral 1:1 metal-azo or neutral 1:1 metal-azomethine dye having the general structure: ##STR1## wherein Z.sub.1 and Z.sub.2 each independently represent an arene nucleus, having from 5 to 14 ring atoms;G.sub.1 and G.sub.2 each independently represent a metal ligating group, and further wherein G.sub.1 and G.sub.2 may be contained within or pendant from at least one of Z.sub.1 and Z.sub.Type: GrantFiled: March 11, 1991Date of Patent: January 19, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Terrance P. Smith, David W. Macomber, Jeffrey C. Chang, Linda K. Williams
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Patent number: RE35550Abstract: The use of eutectic combinations of a dye and a second compound (which may also be a dye) in a binder has been found to provide benefits to thermal dye transfer materials.Type: GrantFiled: August 15, 1991Date of Patent: July 1, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Susan K. Jongewaard, Terrance P. Smith, Krzysztof A. Zaklika