Patents by Inventor Graciela B. Blanchet

Graciela B. Blanchet 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).

  • Publication number: 20130182328
    Abstract: The present invention is directed to articles comprising smudge-resistant anti-reflective surfaces, and products and devices comprising the articles.
    Type: Application
    Filed: December 10, 2010
    Publication date: July 18, 2013
    Applicant: Nano Terra Inc.
    Inventors: Matthew Stewart, Joseph M. McLellan, Graciela B. Blanchet, Brian T. Mayers, Adam Winkleman, Sandip Agarwal, George M. Whitesides
  • Publication number: 20130153514
    Abstract: The present invention is directed to apparatuses and methods for treating fluids with ultraviolet light, including fluid streams, utilizing elliptical chambers. Suitably, water or other fluids can be disinfected using the chambers. Methods for optimizing irradiation of the fluid in the apparatuses are also provided.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 20, 2013
    Applicant: Nano Terra Inc.
    Inventors: Eric Stern, Graciela B. Blanchet, Shih-Chi Chen, Werner Menzi, Igor Sokolik, David J. Averbeck, John Henry Burban, Phil Rol Chigo, Boyko Tchavdarov
  • Publication number: 20090146134
    Abstract: The present invention relates to a semi-conductive composition comprising carbon nanotubes in a matrix. These semiconductive compositions are useful in printing semiconducting portions of thin film transistors.
    Type: Application
    Filed: August 25, 2005
    Publication date: June 11, 2009
    Inventors: Xiang-Zheng Bo, Graciela B. Blanchet
  • Patent number: 7229676
    Abstract: Processes for effecting thermal transfer of electroactive organic material are disclosed wherein unwanted portions of a layer of electroactive organic material supported by a donor element are removed or transferred from the layer by thermal transfer, particularly laser-induced thermal transfer, leaving a desired pattern of the electroactive organic material on the donor element. The electroactive organic material may be an organic material exhibiting electroluminescence, charge transport, charge injection, electrical conductivity, semiconductivity and/or exciton blocking. The layer of electroactive organic material may comprise more than one layer of different types of electroactive organic material. The exposure pattern is a negative image of the desired pattern. The electroactive organic material of the desired pattern is not, therefore, exposed to the heat which can cause decomposition.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: June 12, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Graciela B. Blanchet-Fincher
  • Patent number: 6852355
    Abstract: Processes for effecting thermal transfer of electroactive organic material are disclosed wherein unwanted portions of a layer of electroactive organic material supported by a donor element are removed or transferred from the layer by thermal transfer, particularly laser-induced thermal transfer, leaving a desired pattern of the electroactive organic material on the donor element. The electroactive organic material may be an organic material exhibiting electroluminescence, charge transport, charge injection, electrical conductivity, semiconductivity and/or exciton blocking. The layer of electroactive organic material may comprise more than one layer of different types of electroactive organic material. The exposure pattern is a negative image of the desired pattern. The electroactive organic material of the desired pattern is not, therefore, exposed to the heat which can cause decomposition.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: February 8, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Graciela B. Blanchet-Fincher
  • Publication number: 20020149315
    Abstract: Processes for effecting thermal transfer of electroactive organic material are disclosed wherein unwanted portions of a layer of electroactive organic material supported by a donor element are removed or transferred from the layer by thermal transfer, particularly laser-induced thermal transfer, leaving a desired pattern of the electroactive organic material on the donor element. The electroactive organic material may be an organic material exhibiting electroluminescence, charge transport, charge injection, electrical conductivity, semiconductivity and/or exciton blocking. The layer of electroactive organic material may comprise more than one layer of different types of electroactive organic material. The exposure pattern is a negative image of the desired pattern. The electroactive organic material of the desired pattern is not, therefore, exposed to the heat which can cause decomposition.
    Type: Application
    Filed: February 19, 2002
    Publication date: October 17, 2002
    Inventor: Graciela B. Blanchet-Fincher
  • Patent number: 5578901
    Abstract: A field emission electron emitter comprising an electrode formed of at least one diamond, diamond-like carbon or glassy carbon composite fiber, said composite fiber having a non-diamond core and a diamond, diamond-like carbon or glassy carbon coating on said non-diamond core, and electronic devices employing such a field emission electron emitter.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: November 26, 1996
    Assignees: E. I. Du Pont de Nemours and Company, The Regents of the University of California
    Inventors: Graciela B. Blanchet-Fincher, Don M. Coates, David J. Devlin, David F. Eaton, Aris K. Silzars, Steven M. Valone
  • Patent number: 5288528
    Abstract: This invention provides an improved process for producing a thin film of addition polymer on a substrate by laser ablation wherein the molecular weight of addition polymer is controlled by conducting the process in the presence of at least one additive selected from chain transfer agents or polymer initiators.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: February 22, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Graciela B. Blanchet-Fincher
  • Patent number: 5268354
    Abstract: A process making thin film elements of an oxide superconductor (Tl..sub.5 Pb.sub.0.5)Sr.sub.2 CaCu.sub.2 O.sub.7, (Tl..sub.5 Pb.sub.0.5)Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.9 or a mixture thereof. The process entails forming an oxide film of a mixture of oxides of Pb, Sr, Ca and Cu in preselected amounts, placing the oxide film in a container of nonreactive metal such as gold that contains a powder of (Tl..sub.5 Pb.sub.0.5)Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.9 superconductor, sealing the container, and heating the sealed container to a temperature of about 820.degree. C. to about 950.degree. C. for at least 1 minute.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: December 7, 1993
    Assignee: E. I. Du Pont de Nemours and Comapny
    Inventors: Graciela B. Blanchet-Fincher, Curtis R. Fincher, Jr., Norman Herron
  • Patent number: 5238471
    Abstract: Disclosed is a process for preparing gas separation membranes wherein a thin film of an amorphous fluoropolymer is spray-deposited as an aerosol onto a microporous substrate and rendered substantially continuous or defect-free by thermal and/or chemical treatment.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: August 24, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Graciela B. Blanchet-Fincher
  • Patent number: 5192580
    Abstract: A process for producing thin film of a first addition polymer on a substrate comprising bombarding a target, consisting essentially of a second addition polymer, with radiation from a pulsed laser in a vacuum or gas atmosphere to form a plume of components of said second polymer; and depositing said plume on a substrate, whereby a film of said first polymer is formed. The first and second addition polymer may be identical or different and in both cases may be fluoropolymer.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: March 9, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Graciela B. Blanchet-Fincher
  • Patent number: 5145760
    Abstract: High resolution, photosensitive electrostatic master which is positive-working with a single imagewise exposure comprising a conductive support bearing a layer of a photosensitive composition consisting essentially of (a) at least two polymeric binders, at least one binder having a Tg greater than 80.degree. C. and at least one binder having a Tg of 70.degree. C. or less such that the shift in transit time (a.sub.T) of the photosensitive layer in the range of 30%.ltoreq.relative humidity.ltoreq.60% and 65.degree. F. (18.3.degree. C.).ltoreq.temperature .ltoreq.80.degree. F. (26.7.degree. C.) is 10 or less, (b) a hexaarylbiimidazole photooxidant, (c) leuco dye, preferably stabilized, oxidized by (b), (d) a nonionic halogenated compound, preferably a hydrocarbon, and (e) at least one compatible plasticizer. A process of making positive images by a single imagewise exposure is described.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: September 8, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Graciela B. Blanchet-Fincher, Catherine T. Chang, Richard J. Kempf
  • Patent number: 5064740
    Abstract: Xeroprinting process comprising(A) exposing imagewise to actinic radiation a photohardenable electrostatic master comprising(1) an electrically conductive substrate, and(2) a layer of photohardenable composition consisting essentially of(a) at least two organic polymeric binders, at least one having a Tg greater than 80.degree. C. and at least one having a Tg less than 70.degree. C.,(b) at least one monomeric compound having at least one ethylenically unsaturated group, and(c) a photoinitiator or photoinitiator system, the shift in transit time (a.sub.T) of the photohardenable layer in the range of 30%.ltoreq.relative humidity.ltoreq.60% and 15.6.degree. C..ltoreq.temperature .ltoreq.26.7.degree. C. is 15 or less, preferably 10 or less(B) charging the photohardenable master electrostatically,(C) applying an oppositely charged electrostatic toner, and(D) transferring the toned image to a receptor surface.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: November 12, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Graciela B. Blanchet-Fincher, Catherine T. Chang, Curtis R. Fincher, Jr.
  • Patent number: 5043237
    Abstract: Photohardenable electrostatic master with improved environmental latitude and dot shape comprising(1) an electrically conductive substrate, and coated thereon(2) a layer of photohardenable composition having a speed that requires an exposure energy in the range of 3 to 90 mjoules/sq. cm. consisting essentially of(a) at least two incompatible organic polymeric binders,(b) at least one monomeric compound having at least ethylenically unsaturated group, and(c) a photoinitiator or photoinitiator system that activates polymerization of the ethylenically unsaturated monomer upon exposure to actinic radiation,(d) a chain transfer agent, and(e) at least one polymerization inhibitor in an amount of at least 0.1% by weight based on the total weight of photohardenable composition.A xeroprinting process is described using the master. The master is used in graphic arts, color proofing which duplicates images produced by printing, preparation of printed circuit boards, resists, soldermasks, etc.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: August 27, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Graciela B. Blanchet-Fincher, Catherine Teh-Lin Chang
  • Patent number: 5006434
    Abstract: Photohardenable electrostatic master with improved environmental latitude comprising(1) an electrically conductive substrate, and(2) a layer of photohardenable composition consisting essentially of(a) at least two organic polymeric binder, at least one having a Tg greater than 80.degree. C. and at least one having a Tg less than 70.degree. C.,(b) at least one monomeric compound having at least one ethylenically unsaturated group, and(c) a photoinitiator or photoinitiator system, the shift in transit time (a.sub.T) of the photohardenable layer in the range of 30%.ltoreq.relative humidity.ltoreq.60% and 15.6.degree. C..ltoreq.temperature.ltoreq.26.7.degree. C. is 15 or less, preferably 10 or less. A xeroprinting process is described using the master. The master is used in graphic arts, color proofing which duplicates images produced by printing, preparation of printed circuit boards, resists, soldermasks, etc.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: April 9, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Graciela B. Blanchet-Fincher, Catherine T. Chang, Curtis R. Fincher, Jr.
  • Patent number: 4849314
    Abstract: Photohardenable electrostatic master comprising an electrically conductive substrate, e.g., aluminized polyethylene terephthalate, bearing a layer of a photopolymer comprising an organic polymeric binder, compound having at least one ethylenically unsaturated group, photoinitiator and at least one organic electron acceptor or donor compound, e.g., the acceptor and donor having an oxidation potential of less than +2.5 eV and reduction potential larger than -3.0 eV, respectively. The photohardenable electrostatic master is used for electrostatic proofing, etc.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: July 18, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Graciela B. Blanchet-Fincher, Curtis R. Fincher, Jr.
  • Patent number: 4849784
    Abstract: A transfer device and method of its use for an electrostatic imaging system using liquid toner capable of generating images having very high resolution at fast speeds. The station includes three sections, an electrically biased tack down roller, a transfer corona station and a transfer medium separator. These sections are located to prevent the onset of turbulence in the liquid toner.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: July 18, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Graciela B. Blanchet-Fincher, Kerin S. Benack, Arthur J. Taggi
  • Patent number: 4818660
    Abstract: Photohardenable electrostatic master comprising an electrically conductive substrate, e.g., aluminized polyethylene terephthalate, bearing a layer of a photopolymer comprising an organic polymeric binder, compound having at least one ethylenically unsaturated group, photoinitiator, an aromatic amino compound, as defined, and an acid, e.g., p-toluene sulfonic acid, or an oxidized substituted aromatic amino compound. The photohardenable electrostatic master having improved charge decay and backtransfer is used for electrostatic proofing, etc.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: April 4, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Graciela B. Blanchet-Fincher, Curtis R. Fincher, Jr., Lawrence K.-F. Cheung, Rolf Dessauer, Catharine E. Looney