Patents by Inventor Juha Rantala

Juha Rantala 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: 20210311394
    Abstract: Silanol-containing organic-inorganic hybrid coatings on semiconductor substrates for forming patterns thereon. The present coatings can be produced by coating of semiconductor substrates with metal and silanol containing polyhydridosilsesquioxane resin solutions. Provided herein is also a method for patterning a metal and silanol containing polyhydridosilsesquioxane coated substrate with radiation of light at a specific wavelength, the method comprising the steps of irradiating a coated substrate along a selected pattern to form an irradiated structure with a region of irradiated coating and a region with un-irradiated coating and selectively developing the irradiated structure to remove a substantial portion of the un-irradiated coating to form a patterned substrate. The invention allows for obtaining a preselected silanol content polyhydridosilsesquioxane resin, and adjustment of the silanol content will make it possible to obtain a highly sensitive coating for application in EUV.
    Type: Application
    Filed: August 12, 2019
    Publication date: October 7, 2021
    Inventors: Thomas Gädda, Luong Dang Nguyen, Markus Laukkanen, Kimmo Karaste, Juha Rantala, Jonathan Glen
  • Publication number: 20210301136
    Abstract: A composition for a low refractive film, said composition comprising 10 parts by weight of a polysiloxane and 3 to 150 parts by weight of a volatile hydroxyalkylsilane. Based on the polysiloxane composition, films can be produced having a porous polysiloxane network and exhibiting a low refractive index of 1.4 or less and dielectric constant of 1.5 or less.
    Type: Application
    Filed: July 18, 2019
    Publication date: September 30, 2021
    Inventors: Jyri Paulasaari, Juha Rantala
  • Patent number: 11084928
    Abstract: An adhesive or encapsulant composition, having a siloxane polymer having a molecular weight of from 300 to 150,000 g/mol and having a viscosity of from 1000 to 100,000 mPa-sec at 5 rpm viscometer and at 25° C., and a curing agent that aids in curing the siloxane polymer upon the application of ultraviolet light. The composition is transmissive to visible light with an optical transmissivity of 95% or more in the visible spectrum at a thickness of 1 mm or less, and wherein the siloxane polymer is a material formed without hydrosilylation and has less than 5 mol % of Si—OH groups compared to all groups bound to Si therein, and substantially no Si—H bonds.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: August 10, 2021
    Assignee: Inkron Oy
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Patent number: 11001674
    Abstract: A siloxane polymer is made by providing a first compound having the chemical formula SiR1aR24?a where a is from 1 to 3, R1 is a reactive group, and R2 is an alkyl group or an aryl group, and providing a second compound having the chemical formula SiR3bR4cR54?(b+c) where R3 is a cross-linking functional group, R4 is a reactive group, and R5 is an alkyl or aryl group, and where b=1 to 2, and c=1 to (4?b). The first and second compounds are polymerized together to form a siloxane polymer and a plurality of particles mixed with the siloxane polymer.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: May 11, 2021
    Assignee: Inkron Oy
    Inventors: Jarkko Heikkinen, Juha Rantala
  • Publication number: 20210030874
    Abstract: Antibiotic for use in a method comprising systemically administering a photosensitive antibiotic to a subject having a microbial infection in a target tissue to provide a blood plasma concentration of the antibiotic in the subject; allowing the plasma or tissue concentration of the antibiotic increase to a predetermined level; and subjecting the target tissue to photodynamic therapy in order to increase the antimicrobial action of the antibiotic in the target tissue. With light activation the efficacy of the photosensitizer antibiotic can be enhanced, the spectrum of the microbial effect broadened and even an antiviral effect can be obtained. Generally, the present invention can be exploited when there is a need for enhancement of the local antimicrobial effect of antibiotics.
    Type: Application
    Filed: August 3, 2020
    Publication date: February 4, 2021
    Inventors: Tommi Pätilä, Sakari Nikinmaa, Juha Rantala
  • Patent number: 10889690
    Abstract: Phenoxyphenylsilane monomers were synthesized and polymerized. The polymers have high refractive indices and excellent UV and thermal stability. Their water and oxygen permeability is lower than commercial phenyl silicone elastomers. They show good compatibility with metal oxide nanoparticles. The polymers of the invention are suitable as LED encapsulant, as light guide material in CMOS image sensors, in OLED devices, lasers and in other optical applications.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: January 12, 2021
    Assignee: Inkron Oy
    Inventors: Jyri Paulasaari, Juha Rantala
  • Patent number: 10658554
    Abstract: An LED lamp is formed from a die substrate wherein the substrate has formed thereon a semiconductor material, an electrode for the application of a bias across the semiconductor material for causing light to be emitted therefrom, and an adhesive that bonds the die substrate to a support substrate, wherein the adhesive is a polymerized siloxane polymer having a thermal conductivity of greater than 0.1 watts per meter kelvin (W/(m·K)) wherein the adhesive is not light absorbing, wherein the siloxane polymer has silicon and oxygen in the polymer backbone, as well as aryl or alky groups bound thereto, and wherein the adhesive further comprises particles having an average particle size of less than 100 microns.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: May 19, 2020
    Assignee: Inkron Oy
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Publication number: 20200095379
    Abstract: A siloxane polymer is made by providing a first compound having the chemical formula SiR1aR24?a where a is from 1 to 3, R1 is a reactive group, and R2 is an alkyl group or an aryl group, and providing a second compound having the chemical formula SiR3bR4cR54?(b+c) where R3 is a cross-linking functional group, R4 is a reactive group, and R5 is an alkyl or aryl group, and where b=1 to 2, and c=1 to (4?b). The first and second compounds are polymerized together to form a siloxane polymer. The siloxane polymer can be then used in a final composition where the siloxane polymer comprises from 5 to 100% by weight, and filler (e.g. microparticles, nanoparticles, nanowires, etc.) comprises from zero to 95% by weight. The siloxane polymer composition is useful in a variety of areas such as an adhesive, e.g. as a die attach adhesive in semiconductor (e.g. LED) packaging applications, encapsulants, optical coatings, protective coatings, and other applications.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 26, 2020
    Inventors: Jarkko Heikkinen, Juha Rantala
  • Patent number: 10502995
    Abstract: A method for making a dielectric film includes a substrate on which is deposited a siloxane starting material and particles, wherein the siloxane starting material has a siloxane polymer, a siloxane oligomer and/or silane monomers, and wherein the particles have an average particle size of less than 400 nm. After deposition, heat and/or electromagnetic energy is applied to the siloxane particle layer so as to cure the layer and form a dielectric film on the substrate. The formed film is optically transmissive to visible light and transmits at least 80% of the visible light incident thereon, and is electrically insulating and has a sheet resistance of 1000 ?/sq or more.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: December 10, 2019
    Assignee: Inkron Oy
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Patent number: 10487179
    Abstract: A siloxane polymer is made by providing a first compound having the chemical formula SiR1aR24?a where a is from 1 to 3, R1 is a reactive group, and R2 is an alkyl group or an aryl group, and providing a second compound having the chemical formula SiR3bR4cR54?(b+c) where R3 is a cross-linking functional group, R4 is a reactive group, and R5 is an alkyl or aryl group, and where b=1 to 2, and c=1 to (4?b). The first and second compounds are polymerized together to form a siloxane polymer. The siloxane polymer can be then used in a final composition where the siloxane polymer comprises from 5 to 100% by weight, and filler (e.g. microparticles, nanoparticles, nanowires, etc.) comprises from zero to 95% by weight. The siloxane polymer composition is useful in a variety of areas such as an adhesive, e.g. as a die attach adhesive in semiconductor (e.g. LED) packaging applications, encapsulants, optical coatings, protective coatings, and other applications.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 26, 2019
    Assignee: Inkron Oy
    Inventors: Jarkko Heikkinen, Juha Rantala
  • Patent number: 10435420
    Abstract: Phenoxyphenylsilane monomers were synthesized and polymerized. The polymers have high refractive indices and excellent UV and thermal stability. Their water and oxygen permeability is lower than commercial phenyl silicone elastomers. They show good compatibility with metal oxide nanoparticles. The polymers of the invention are suitable as LED encapsulant, as light guide material in CMOS image sensors, in OLED devices, lasers and in other optical applications.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 8, 2019
    Assignee: Inkron Oy
    Inventors: Jyri Paulasaari, Juha Rantala
  • Publication number: 20190267299
    Abstract: An adhesive or encapsulant composition, having a siloxane polymer having a molecular weight of from 300 to 150,000 g/mol and having a viscosity of from 1000 to 100,000 mPa-sec at 5 rpm viscometer and at 25° C., and a curing agent that aids in curing the siloxane polymer upon the application of ultraviolet light. The composition is transmissive to visible light with an optical transmissivity of 95% or more in the visible spectrum at a thickness of 1 mm or less, and wherein the siloxane polymer is a material formed without hydrosilylation and has less than 5 mol % of Si—OH groups compared to all groups bound to Si therein, and substantially no Si—H bonds.
    Type: Application
    Filed: May 13, 2019
    Publication date: August 29, 2019
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Patent number: 10398000
    Abstract: An integrated LED structure and a method of adjusting the emission spectrum of an integrated LED structure, for photobiological process is disclosed. The structure comprises a substrate; a plurality of optically isolated and electrically non-independent light emission areas integrated on the substrate; a light emitting semiconductor source of a first type mounted in the emission area(s); a light emitting semiconductor source of a second type mounted in the emission area(s); an electrical circuit layer for connecting the light emitting semiconductor sources in serial fashion for each emission area; and wavelength conversion materials. The emission areas are controlled with a common electrical drive current, and the emission output can be tuned by adjusting the common current value, to enable use of one luminaire for a large variety of biomass growing applications.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 27, 2019
    Assignee: illumiPure Corp
    Inventor: Juha Rantala
  • Patent number: 10385464
    Abstract: This application relates to oxide particles, preferably transition metal oxide particles, made via the application of a voltage across an electrolyte solution. The electrolyte solution includes a transition metal salt dissolved in water, and preferably also includes a compound for increasing the electrical conductivity of the electrolyte. The particles made by the processes disclosed herein, can have sizes in the micrometer or nanometer ranges. The oxide particles can have a variety of uses, including for charge storage devices. As an example, manganese oxide particles, and methods for making the same, are disclosed for a variety of uses including lithium ion batteries.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: August 20, 2019
    Assignee: Inkron Ltd
    Inventor: Juha Rantala
  • Publication number: 20190225756
    Abstract: Phenoxyphenylsilane monomers were synthesized and polymerized. The polymers have high refractive indices and excellent UV and thermal stability. Their water and oxygen permeability is lower than commercial phenyl silicone elastomers. They show good compatibility with metal oxide nanoparticles. The polymers of the invention are suitable as LED encapsulant, as light guide material in CMOS image sensors, in OLED devices, lasers and in other optical applications.
    Type: Application
    Filed: July 14, 2017
    Publication date: July 25, 2019
    Applicant: Inkron Oy
    Inventors: Jyri Paulasaari, Juha Rantala
  • Patent number: 10290558
    Abstract: An adhesive or encapsulant composition, having a siloxane polymer having a molecular weight of from 300 to 150,000 g/mol and having a viscosity of from 1000 to 100,000 mPa-sec at 5 rpm viscometer and at 25° C., and a curing agent that aids in curing the siloxane polymer upon the application of ultraviolet light. The composition is transmissive to visible light with an optical transmissivity of 95% or more in the visible spectrum at a thickness of 1 mm or less, and wherein the siloxane polymer is a material formed without hydrosilylation and has less than 5 mol % of Si—OH groups compared to all groups bound to Si therein, and substantially no Si—H bonds.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: May 14, 2019
    Assignee: Inkron Oy
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Publication number: 20190061236
    Abstract: Methods and materials are disclosed for making three dimensional articles via 3d printing. The methods can include printing both electrically insulating and electrically conducting portions, transparent, reflective or opaque portions, transparent portions having different refractive indices, portions of different colors, and where the various deposited portions are UV or heat curable, and optionally comprise particles, such as metallic particles in electrically conductive portions and ceramic particles in electrically insulating portions. A variety of 3D articles can be made, such as transparent articles such as eyeglasses, or electronics articles such as portions of smartphones, tablets or the like.
    Type: Application
    Filed: October 10, 2016
    Publication date: February 28, 2019
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Publication number: 20190037662
    Abstract: An integrated LED structure and a method of adjusting the emission spectrum of an integrated LED structure, for photobiological process is disclosed. The structure comprises a substrate; a plurality of optically isolated and electrically non-independent light emission areas integrated on the substrate; a light emitting semiconductor source of a first type mounted in the emission area(s); a light emitting semiconductor source of a second type mounted in the emission area(s); an electrical circuit layer for connecting the light emitting semiconductor sources in serial fashion for each emission area; and wavelength conversion materials. The emission areas are controlled with a common electrical drive current, and the emission output can be tuned by adjusting the common current value, to enable use of one luminaire for a large variety of biomass growing applications.
    Type: Application
    Filed: September 18, 2018
    Publication date: January 31, 2019
    Inventor: Juha Rantala
  • Publication number: 20180301648
    Abstract: A display has a plurality of pixels in a matrix, the pixels each comprising a liquid crystal layer and/or light emitting diode layer, a plurality of substrates, at least a first substrate being optically transmissive to visible light, an electrode formed on one of the substrates and having electrically conductive material that has an electrical resistivity of less than 200 ?/sq and that comprises a siloxane material and particles having an average particle size of less than 10 microns.
    Type: Application
    Filed: October 10, 2016
    Publication date: October 18, 2018
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Patent number: 10104740
    Abstract: An integrated LED structure and a method of adjusting the emission spectrum of an integrated LED structure, for photobiological process. The structure comprises a substrate; a plurality of optically isolated and electrically non-independent light emission areas integrated on the substrate; a light emitting semiconductor source of a first type mounted in the emission area(s); a light emitting semiconductor source of a second type mounted in the emission area(s); an electrical circuit layer for connecting the said light emitting semiconductor sources in serial fashion for each emission area; and wavelength conversion materials. The emission areas are controlled with a common electrical drive current, and the emission output can be tuned by adjusting the common current value, to enable use of one luminaire for a large variety of biomass growing applications.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: October 16, 2018
    Inventor: Juha Rantala