Patents by Inventor Donald A. Zehnder
Donald A. Zehnder 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: 20230317919Abstract: Disclosed herein are methods, systems, and compositions for the liquid-phase deposition of film coatings onto the surface of battery material powders. The battery material powders are introduced into a reaction vessel within which the coating is to be performed. A solvent is added to the reaction vessel to fluidize the battery material powders, thereby yielding a slurry composed of the solvent and powders. A first reagent is then added into the reaction vessel to react with the slurry to produce battery material powders comprising an adsorbed partial layer of the first reagent. A second reagent is added into reaction vessel to react with the battery material powders comprising an adsorbed monolayer of first reagent, thereby yielding coated battery material powders comprising at least one monolayer film.Type: ApplicationFiled: August 28, 2021Publication date: October 5, 2023Inventors: Sourav Roger Basu, Jonathan Tan, Michael D Slater, Donald A. Zehnder, Matthew A. Kolaczkowski
-
Publication number: 20230235225Abstract: The invention pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one organic solvent; (b) at least one population of nanostructures comprising a core and at least one shell, wherein the nanostructures comprise inorganic ligands bound to the surface of the nanostructures; and (c) at least one poly(alkylene oxide) additive. The nanostructure compositions comprising at least one poly(alkylene oxide) additive show improved solubility in organic solvents. And, the nanostructure compositions show increased suitability for use in inkjet printing. The disclosure also provides methods of producing emissive layers using the nanostructure compositions.Type: ApplicationFiled: December 19, 2022Publication date: July 27, 2023Applicant: Nanosys, Inc.Inventors: Christian IPPEN, Donald ZEHNDER, Ruiqing MA
-
Publication number: 20230036119Abstract: The present invention provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise a population of nanostructures comprising donor-acceptor ligands. The present invention also provides nanostructure films comprising the nanostructure compositions and methods of making nanostructure films using the nanostructure compositions.Type: ApplicationFiled: July 7, 2022Publication date: February 2, 2023Inventors: Daekyoung KIM, Christian IPPEN, Ruiquing MA, Dylan GARY, Donald ZEHNDER
-
Patent number: 11555149Abstract: The invention pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one organic solvent; (b) at least one population of nanostructures comprising a core and at least one shell, wherein the nanostructures comprise inorganic ligands bound to the surface of the nanostructures; and (c) at least one poly(alkylene oxide) additive. The nanostructure compositions comprising at least one poly(alkylene oxide) additive show improved solubility in organic solvents. And, the nanostructure compositions show increased suitability for use in inkjet printing. The disclosure also provides methods of producing emissive layers using the nanostructure compositions.Type: GrantFiled: September 10, 2020Date of Patent: January 17, 2023Assignee: Nanosys, Inc.Inventors: Christian Ippen, Donald Zehnder, Ruiqing Ma
-
Publication number: 20220407025Abstract: Embodiments of a flexible electroluminescent (EL) device are described. An EL device includes a device stack and a flexible substrate configured to support the device stack. The device stack can include a anode and a cathode, a quantum dot (QD) film positioned between the anode and the cathode and configured to produce light having a first peak wavelength. The device stack further includes a patterned insulating layer disposed on the anode and configured to form electrically active regions in the device stack and to control emission of the light from the EL device through the electrically active regions. The EL device further includes an encapsulation layer disposed on the cathode.Type: ApplicationFiled: July 1, 2022Publication date: December 22, 2022Applicant: Nanosys, Inc.Inventors: Donald A. ZEHNDER, Dylan C. HAMILTON, Ruiqing MA, Jesse R. MANDERS
-
Patent number: 11380863Abstract: Embodiments of a flexible electroluminescent (EL) device are described. An EL device includes a device stack and a flexible substrate configured to support the device stack. The device stack can include a anode and a cathode, a quantum dot (QD) film positioned between the anode and the cathode and configured to produce light having a first peak wavelength. The device stack further includes a patterned insulating layer disposed on the anode and configured to form electrically active regions in the device stack and to control emission of the light from the EL device through the electrically active regions. The EL device further includes an encapsulation layer disposed on the cathode.Type: GrantFiled: March 18, 2020Date of Patent: July 5, 2022Assignee: Nanosys, Inc.Inventors: Donald A. Zehnder, Dylan C. Hamilton, Ruiqing Ma, Jesse R. Manders
-
Publication number: 20220131102Abstract: Embodiments of an electroluminescent device are described. The electroluminescent device includes a substrate, a first electrode disposed on the substrate, an emission layer comprising luminescent nanostructures disposed on the first electrode, a hybrid transport layer disposed on the emission layer, and a second electrode disposed on the hybrid transport layer. The hybrid transport layer includes an organic layer and inorganic nanostructures disposed within the organic layer. The luminescent nanostructures are separated from the inorganic nanostructures by the organic layer.Type: ApplicationFiled: October 21, 2021Publication date: April 28, 2022Applicant: Nanosys, Inc.Inventors: Daekyoung KIM, Ruiqing MA, Emma DOHNER, Donald ZEHNDER
-
Patent number: 11268022Abstract: The invention relates to highly stable nanostructures with inorganic ligands for electroluminescent devices, particularly nanostructure composition comprising at least one population of nanostructures; and at least one fluoride containing ligand bound to the surface of the nanostructure; wherein the fluoride containing ligand is selected from the group consisting of a fluorozincate, tetrafluoroborate, and hexafluorophosphate. The invention also relates to highly stable nanostructures comprising at least one population of nanostructures and fluoride anions bound to the surface of the nanostructure. The invention also relates to methods of producing such nanostructures.Type: GrantFiled: March 20, 2020Date of Patent: March 8, 2022Assignee: Nanosys, Inc.Inventors: Christian Ippen, John J. Curley, Donald Zehnder, Dylan Charles Hamilton, Benjamin Newmeyer, Ruiqing Ma
-
Patent number: 11041071Abstract: The present disclosure provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise at least one population of nanostructures, at least one poly(alkylene oxide) ligand bound to the surface of the nanostructures, and optionally at least one organic resin. The present disclosure also provides nanostructure films comprising a nanostructure layer and methods of making nanostructure films.Type: GrantFiled: August 16, 2018Date of Patent: June 22, 2021Assignee: Nanosys, Inc.Inventors: Ravisubhash Tangirala, Shihai Kan, Jay Yamanaga, Charles Hotz, Donald Zehnder
-
Publication number: 20210071077Abstract: The invention pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one organic solvent; (b) at least one population of nanostructures comprising a core and at least one shell, wherein the nanostructures comprise inorganic ligands bound to the surface of the nanostructures; and (c) at least one poly(alkylene oxide) additive. The nanostructure compositions comprising at least one poly(alkylene oxide) additive show improved solubility in organic solvents. And, the nanostructure compositions show increased suitability for use in inkjet printing. The disclosure also provides methods of producing emissive layers using the nanostructure compositions.Type: ApplicationFiled: September 10, 2020Publication date: March 11, 2021Applicant: Nanosys, Inc.Inventors: Christian IPPEN, Donald ZEHNDER, Ruiqing MA
-
Publication number: 20210013371Abstract: Embodiments of the present application relate to the use of quantum dots mixed with spacer particles. An illumination device includes a first conductive layer, a second conductive layer, and an active layer disposed between the first conductive layer and the second conductive layer. The active layer includes a plurality of quantum dots that emit light when an electric field is generated between the first and second conductive layers. The quantum dots are interspersed with spacer particles that do not emit light when the electric field is generated between the first and second conductive layers.Type: ApplicationFiled: September 28, 2020Publication date: January 14, 2021Applicant: Nanosys, Inc.Inventors: Jesse MANDERS, Christian IPPEN, Donald ZEHNDER, Jonathan TRUSKIER, Charles HOTZ
-
Patent number: 10790411Abstract: Embodiments of the present application relate to the use of quantum dots mixed with spacer particles. An illumination device includes a first conductive layer, a second conductive layer, and an active layer disposed between the first conductive layer and the second conductive layer. The active layer includes a plurality of quantum dots that emit light when an electric field is generated between the first and second conductive layers. The quantum dots are interspersed with spacer particles that do not emit light when the electric field is generated between the first and second conductive layers.Type: GrantFiled: November 28, 2017Date of Patent: September 29, 2020Assignee: Nanosys, Inc.Inventors: Jesse Manders, Christian Ippen, Donald Zehnder, Jonathan Truskier, Charles Hotz
-
Publication number: 20200299575Abstract: The invention relates to highly stable nanostructures with inorganic ligands for electroluminescent devices, particularly nanostructure composition comprising at least one population of nanostructures; and at least one fluoride containing ligand bound to the surface of the nanostructure; wherein the fluoride containing ligand is selected from the group consisting of a fluorozincate, tetrafluoroborate, and hexafluorophosphate. The invention also relates to highly stable nanostructures comprising at least one population of nanostructures and fluoride anions bound to the surface of the nanostructure. The invention also relates to methods of producing such nanostructures.Type: ApplicationFiled: March 20, 2020Publication date: September 24, 2020Applicant: Nanosys, Inc.Inventors: Christian IPPEN, John J. CURLEY, Donald ZEHNDER, Dylan Charles HAMILTON, Benjamin NEWMEYER, Ruiqing MA
-
Publication number: 20200303668Abstract: Embodiments of a flexible electroluminescent (EL) device are described. An EL device includes a device stack and a flexible substrate configured to support the device stack. The device stack can include a anode and a cathode, a quantum dot (QD) film positioned between the anode and the cathode and configured to produce light having a first peak wavelength. The device stack further includes a patterned insulating layer disposed on the anode and configured to form electrically active regions in the device stack and to control emission of the light from the EL device through the electrically active regions. The EL device further includes an encapsulation layer disposed on the cathode.Type: ApplicationFiled: March 18, 2020Publication date: September 24, 2020Applicant: Nanosys, Inc.Inventors: Donald A. ZEHNDER, Dylan C. HAMILTON, Ruiqing Ma, Jesse R. MANDERS
-
Publication number: 20190077954Abstract: The present disclosure provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise at least one population of nanostructures, at least one poly(alkylene oxide) ligand bound to the surface of the nanostructures, and optionally at least one organic resin. The present disclosure also provides nanostructure films comprising a nanostructure layer and methods of making nanostructure films.Type: ApplicationFiled: August 16, 2018Publication date: March 14, 2019Applicant: Nanosys, Inc.Inventors: Ravisubhash Tangirala, Shihai Kan, Jay Yamanaga, Charles Hotz, Donald Zehnder
-
Preparation of stable, bright luminescent nanoparticles having compositionally engineered properties
Patent number: 9263638Abstract: A method is provided for preparing luminescent semiconductor nanoparticles composed of a first component X, a second component A, and a third component B, wherein X, A, and B are different, by combining B with X and A in an amount such that the molar ratio B:(A+B) is in the range of approximately 0.001 to 0.20 and the molar ratio X:(A+B) is in the range of approximately 0.5:1.0 to 2:1. The characteristics of the thus-prepared nanoparticles can be substantially similar to those of nanoparticles containing only X and B while maintaining many useful properties characteristic of nanoparticles containing only X and A. The nanoparticles so prepared can additionally exhibit emergent properties such as a peak emission energy less than that characteristic of a particle composed of XA or XB alone; this method is particularly applicable to the preparation of stable, bright nanoparticles that emit in the red to infrared regions of the electromagnetic spectrum.Type: GrantFiled: November 6, 2013Date of Patent: February 16, 2016Assignee: LIFE TECHNOLOGIES CORPORATIONInventors: Marc D. Schrier, Donald Zehnder, Joseph Treadway, Joseph Bartel -
Patent number: 8834628Abstract: A method is described for the manufacture of semiconductor nanoparticles. Improved yields are obtained by use of a reducing agent or oxygen reaction promoter.Type: GrantFiled: December 23, 2009Date of Patent: September 16, 2014Assignee: Life Technologies CorporationInventors: Donald A. Zehnder, Joseph Treadway
-
Preparation of Stable, Bright Luminescent Nanoparticles Having Compositionally Engineered Properties
Publication number: 20140131631Abstract: A method is provided for preparing luminescent semiconductor nanoparticles composed of a first component X, a second component A, and a third component B, wherein X, A, and B are different, by combining B with X and A in an amount such that the molar ratio B:(A+B) is in the range of approximately 0.001 to 0.20 and the molar ratio X:(A+B) is in the range of approximately 0.5:1.0 to 2:1. The characteristics of the thus-prepared nanoparticles can be substantially similar to those of nanoparticles containing only X and B while maintaining many useful properties characteristic of nanoparticles containing only X and A. The nanoparticles so prepared can additionally exhibit emergent properties such as a peak emission energy less than that characteristic of a particle composed of XA or XB alone; this method is particularly applicable to the preparation of stable, bright nanoparticles that emit in the red to infrared regions of the electromagnetic spectrum.Type: ApplicationFiled: November 6, 2013Publication date: May 15, 2014Applicant: LIFE TECHNOLOGIES CORPORATIONInventors: Marc D. SCHRIER, Donald ZEHNDER, Joseph TREADWAY, Joseph BARTEL -
Preparation of stable, bright luminescent nanoparticles having compositionally engineered properties
Patent number: 8603362Abstract: A method is provided for preparing luminescent semiconductor nanoparticles composed of a first component X, a second component A, and a third component B, wherein X, A, and B are different, by combining B with X and A in an amount such that the molar ratio B:(A+B) is in the range of approximately 0.001 to 0.20 and the molar ratio X:(A+B) is in the range of approximately 0.5:1.0 to 2:1. The characteristics of these nanoparticles can be substantially similar to those of nanoparticles containing only X and B while maintaining many useful properties characteristic of nanoparticles containing only X and A; and can additionally exhibit emergent properties such as a peak emission energy less than that characteristic of a particle composed of XA or XB alone. This method is particularly applicable to the preparation of stable, bright nanoparticles that emit in the red to infrared regions of the electromagnetic spectrum.Type: GrantFiled: September 10, 2012Date of Patent: December 10, 2013Assignee: Life Technologies CorporationInventors: Marc Schrier, Donald Zehnder, Joseph Treadway, Joseph Bartel -
Preparation of Stable, Bright Luminescent Nanoparticles Having Compositionally Engineered Properties
Publication number: 20130037762Abstract: A method is provided for preparing luminescent semiconductor nanoparticles composed of a first component X, a second component A, and a third component B, wherein X, A, and B are different, by combining B with X and A in an amount such that the molar ratio B:(A+B) is in the range of approximately 0.001 to 0.20 and the molar ratio X:(A+B) is in the range of approximately 0.5:1.0 to 2:1. The characteristics of these nanoparticles can be substantially similar to those of nanoparticles containing only X and B while maintaining many useful properties characteristic of nanoparticles containing only X and A; and can additionally exhibit emergent properties such as a peak emission energy less than that characteristic of a particle composed of XA or XB alone. This method is particularly applicable to the preparation of stable, bright nanoparticles that emit in the red to infrared regions of the electromagnetic spectrum.Type: ApplicationFiled: September 10, 2012Publication date: February 14, 2013Applicant: LIFE TECHNOLOGIES CORPORATIONInventors: Marc D. Schrier, Donald A. Zehnder, Joseph A. Treadway, Joseph A. Bartel