Patents by Inventor Ari Karkkainen

Ari Karkkainen 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: 20090203839
    Abstract: A silicon polymer material, which has a silicon polymer backbone with chromophore groups attached directly to at least a part of the silicon atoms, the polymer further exhibiting carbosilane bonds. The film forming composition and resulting coating properties can be tailored to suit the specific exposure wavelength and device fabrication and design requirements. By using two different chromophores the refractive index and the absorption co-efficient can be efficiently tuned. By varying the proportion of carbosilane bonds, and a desired Si-content of the anti-reflective coating composition can be obtained.
    Type: Application
    Filed: June 13, 2007
    Publication date: August 13, 2009
    Applicant: Braggone Oy
    Inventor: Ari Karkkainen
  • Publication number: 20090142694
    Abstract: A siloxane composition and a method of producing the Same. The composition comprises a siloxane prepolymer with a backbone exhibiting a group which is capable of being deprotonated in an aqueous base solution. Further, there are reactive functional groups, which are capable of reacting during thermal or radiation initiated curing. The siloxane polymer is provided in a solvent which also contains a photo reactive compound. The composition can be used in negative tone lithographic fabrication processes where a water based developer system is applied in the development step of the lithography process.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 4, 2009
    Applicant: BRAGGONE OY
    Inventors: Ari Karkkainen, Milja Hannu-Kuure, Sacha Legrand, Admir Hadzic, Graeme Gordon
  • Publication number: 20080284320
    Abstract: The invention is based on the idea of providing a light emitting diode (OLED) device which contains a substrate with a photonic crystal, whereby the formed film structure induces enhancement of the liberation of photons trapped inside the light emitting device structure. The photonic crystal structure is a film structure on a substrate produced using a combination of high and low refractive index materials, at least one of the materials being based on a liquid phase deposited metal-oxide or metalloid oxide material. By means of the invention light trapped due to total internal reflection in a waveguide acting light emitting structure can be extracted efficiently from the device by introducing the photonic crystal device structure between the substrate and conductive anode layer.
    Type: Application
    Filed: June 15, 2006
    Publication date: November 20, 2008
    Applicant: BRAGGONE OY
    Inventor: Ari Karkkainen
  • Patent number: 7393560
    Abstract: Organo-tin compound having the formula I: [R—(Y)a]b—SnX4-b wherein R stands for a polycyclic hydrocarbyl residue which optionally carries one or several substituents; Y stands for a bivalent linker group; X represents a hydrolysable group; a is an integer 0 or 1; and b is an integer 1 or 2. The preferably stands for an unsubstituted or substituted fused hydrocarbon ring system selected from naphthalene, antracene, phenanthrene, and pentacene. The novel compounds are useful for producing polymers which can be employed as thin film materials in optoelectronic devices.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: July 1, 2008
    Assignee: Braggone OY
    Inventors: Milja Hannu-Kuure, Ari Kärkkäinen
  • Publication number: 20080022896
    Abstract: The present invention relates to metal oxide coating materials that can be used as thin film thin film coatings on various substrate surfaces. The invention also concerns a method of making metal oxide material which are stable in aqueous phase and that can be deposited on a substrate by liquid phase deposition, such as spin-on deposition. The new materials can be patterned lithographically or non-lithographically and are applicable for building up various electronic and opto-electronic device structures, such as anti-reflection layers, high-k interlayer and gate oxide structures for ICs, etch stop layer, CMP stop layer, solar cells, OLEDs packaging, optical thin film filters, optical diffractive grating applications and hybrid thin film diffractive grating structures.
    Type: Application
    Filed: June 15, 2005
    Publication date: January 31, 2008
    Applicant: Kaitovayla 1
    Inventor: Ari Karkkainen
  • Publication number: 20060263621
    Abstract: Organo-tin compound having the formula I: [R—(Y)a]b—SnX4-b wherein R stands for a polycyclic hydrocarbyl residue which optionally carries one or several substituents; Y stands for a bivalent linker group; X represents a hydrolysable group; a is an integer 0 or 1; and b is an integer 1 or 2. The preferably stands for an unsubstituted or substituted fused hydrocarbon ring system selected from naphthalene, antracene, phenanthrene, and pentacene. The novel compounds are useful for producing polymers which can be employed as thin film materials in optoelectronic devices.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 23, 2006
    Applicant: Braggone Oy
    Inventors: Milja Hannu-Kuure, Ari Karkkainen
  • Patent number: 7094709
    Abstract: The present invention relates to metal oxide coating materials that can be used as thin film thin film coatings on various substrate surfaces. The invention also concerns a method of making metal oxide material which are stable in aqueous phase and that can be deposited on a substrate by liquid phase deposition, such as spin-on deposition. The new materials can be patterned lithographically or non-lithographically and are applicable for building up various electronic and opto-electronic device structures, such as anti-reflection layers, high-k interlayer and gate oxide structures for ICs, etch stop layer, CMP stop layer, solar cells, OLEDs packaging, optical thin film filters, optical diffractive grating applications and hybrid thin film diffractive grating structures.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: August 22, 2006
    Assignee: Braggone Oy
    Inventor: Ari Kärkkäinen
  • Publication number: 20060151859
    Abstract: A packaging layer (200) for a wafer level assembly is fabricated from a glass material comprising both inorganic and organic components. This allows matching between the coefficient of thermal expansion of the packaging layer and that of other materials in the wafer assembly, particularly electrical interconnect materials. It is also possible to introduce properties to support such methods as photolithographic and low temperature processing of the packaging layer. This can improve fabrication accuracy and allows the packaging layer to be used with structures in a wafer assembly which might be damaged by high temperature processing, such as active optoelectronic devices and integrated circuits. Another major advantage is that the glass material can be used to provide optical characteristics as well as mechanical protection. The refractive index and other optical properties can be preselected and thus the glass material can be used for instance for waveguiding and index matching.
    Type: Application
    Filed: September 19, 2003
    Publication date: July 13, 2006
    Inventor: Ari Karkkainen
  • Publication number: 20050277274
    Abstract: The present invention relates to metal oxide coating materials that can be used as thin film thin film coatings on various substrate surfaces. The invention also concerns a method of making metal oxide material which are stable in aqueous phase and that can be deposited on a substrate by liquid phase deposition, such as spin-on deposition. The new materials can be patterned lithographically or non-lithographically and are applicable for building up various electronic and opto-electronic device structures, such as anti-reflection layers, high-k interlayer and gate oxide structures for ICs, etch stop layer, CMP stop layer, solar cells, OLEDs packaging, optical thin film filters, optical diffractive grating applications and hybrid thin film diffractive grating structures.
    Type: Application
    Filed: June 15, 2004
    Publication date: December 15, 2005
    Inventor: Ari Karkkainen
  • Publication number: 20040121520
    Abstract: Optical components are flip chip mounted onto a substrate for improved alignment. Each device is fabricated using “build-up” layers above a substrate. Each has an optical confinement region in which optical radiation travels in use, and a bonding surface. The overall depth of the layers above the optical confinement region is closely controlled during fabrication, for instance by the use a “spacer” layer, so that when the devices are subsequently flip chip mounted adjacent one another on a shared substrate by means of their bonding surfaces, they can be passively positioned so that their optical confinement regions abut and optical radiation can be coupled from one to the next in use.
    Type: Application
    Filed: November 3, 2003
    Publication date: June 24, 2004
    Applicant: OPTITUNE plc
    Inventor: Ari Karkkainen
  • Patent number: 5862124
    Abstract: Interference in a cellular CDMA network due to mobile stations causing multiple use of one carrier frequency in neighboring cells is cancelled. A hard handover is implemented by defining the phase of a spread spectrum code in a signal transmitted from a base station to a mobile followed by measurement of signal strength in the mobile. Thereafter, the result is reported to the CDMA network, inferring whether the mobile interferes with the base station of the neighboring cells. If interference is present, the surrounding base stations are informed about the mobile station channel used, and this information is taken into account in the receivers of signals transmitted by other mobiles within the cell. The measurement results of the mobile are provided as initial values to the parameters required by the initialization of the interference cancellation routines performed in a neighboring base station.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: January 19, 1999
    Assignee: Nokia Telecommunications OY
    Inventors: Ari Hottinen, Arto Kiema, Timo Laakso, Hannu Hakkinen, Aimo Tuoriniemi, Ilkka Keskitalo, Petri Jolma, Ingo Kuhn, Jari Savusalo, Ari Karkkainen, Anne Siira, Risto Uola
  • Patent number: 5845208
    Abstract: A receiver, and a method for estimating received power in a cellular radio system having in each cell at least one base station communicating with mobile stations within its coverage area. The mobile stations measure strength of the signal received from a base station, and report the measurement results to that base station. To improve power adjustment, a model describing the dynamic behavior of the signal is created for the received power on each connection. The model is utilized for power adjustment, as well as for making handover decisions.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: December 1, 1998
    Assignee: Nokia Telecommunications Oy
    Inventors: Ari Hottinen, Ilkka Keskitalo, Arto Kiema, Petri Jolma, Ingo Kuhn, Jari Savusalo, Risto Uola, Anne Siira, Ari Karkkainen