Patents by Inventor Jarkko HEIKKINEN

Jarkko HEIKKINEN 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).

  • 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
  • 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
  • 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: 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: 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
  • Publication number: 20180212113
    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: Application
    Filed: June 22, 2015
    Publication date: July 26, 2018
    Applicant: Inkron Oy
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Publication number: 20170152350
    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: June 22, 2015
    Publication date: June 1, 2017
    Inventors: Jarkko HEIKKINEN, Juha RANTALA
  • Publication number: 20170152419
    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: June 22, 2015
    Publication date: June 1, 2017
    Inventors: Juha Rantala, Jarkko Heikkinen, Janne Kylmä
  • Publication number: 20170137601
    Abstract: A composition has a siloxane material and a filler material that comprises particles preferably with a particle size of less than 100 microns. The siloxane material can have a [—Si—O—Si—O]n repeating backbone, with preferably alkyl or aryl groups thereon, and b) as well as functional cross-linking groups thereon. The composition also has a filler material that includes particles that can be metal, semi-metal or ceramic particles. The composition may also include coupling agents, a catalyst, antioxidants, etc. The composition can be used in a wide variety of areas, such as an adhesive, encapsulant, solder or other layer in a semiconductor package or the like.
    Type: Application
    Filed: June 22, 2015
    Publication date: May 18, 2017
    Inventors: Jarkko Heikkinen, Juha Rantala
  • Publication number: 20170131591
    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: Application
    Filed: June 22, 2015
    Publication date: May 11, 2017
    Inventors: Juha RANTALA, Jarkko HEIKKINEN, Janne KYLMA