Patents by Inventor Thomas G. Rukavina

Thomas G. Rukavina 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: 20020135881
    Abstract: An electrochromic window assembly includes: a first transparent substrate having a first conductive coating on a surface thereof; a second transparent substrate having a second conductive coating on a surface thereof, the first transparent substrate and the second transparent substrate being spaced from each other to define a chamber therebetween; an electrochromic medium contained in the chamber, the electrochromic medium having a luminous transmittance that varies upon application of an electrical potential through the electrochromic medium; a plurality of first spaced facilities contacting the first conductive coating and capable of delivering electrical current to the first conductive coating; and a plurality of second spaced facilities contacting the second conductive coating and capable of delivering electrical current to the second conductive coating to establish the electrical potential through the electrochromic medium.
    Type: Application
    Filed: July 31, 2001
    Publication date: September 26, 2002
    Inventors: Thomas G. Rukavina, Chia-Cheng Lin
  • Publication number: 20020118437
    Abstract: The present invention provides an electrochromic window assembly having coloration associated therewith. The assembly includes an electrochromic device defined by two transparent substrates defining a chamber therebetween, and an electrochromic medium including at least one dye contained within the chamber. At least one of the two substrates has a color. The at least one dye also has a color, which either coordinates with the color of the at least one substrate to produce a window assembly of a desired color, or which complements the color of the at least one substrate.
    Type: Application
    Filed: June 12, 2001
    Publication date: August 29, 2002
    Inventors: Thomas G. Rukavina, Chia-Cheng Lin
  • Publication number: 20020113168
    Abstract: An electrochromic aircraft window assembly includes: a) an outboard pane assembly; and b) a fog preventing electrochromic pane assembly spaced from the outboard pane assembly and defining a chamber therebetween, the fog preventing electrochromic pane assembly having: i) a first substrate having a first surface including a first conductive coating and a second surface including a second conductive coating; ii) a second substrate spaced from the first substrate, the second substrate having a first surface including a third conductive coating, the second surface of the first substrate and the first surface of the second substrate facing each other in spaced-apart relation to define a chamber therebetween; iii) an electrochromic medium contained in the chamber and in contact with the second and the third conductive coatings, the electrochromic medium having a luminous transmittance that varies upon application of an electrical potential through the electrochromic medium; iv) facilities for applying electrical cur
    Type: Application
    Filed: July 31, 2001
    Publication date: August 22, 2002
    Inventors: Thomas G. Rukavina, Chia-Cheng Lin
  • Publication number: 20020048678
    Abstract: An electrochromic device includes a first substrate having at least one polymeric surface; a primer layer along the polymeric surface; a first electrically conductive transparent coating along the primer of the first substrate, wherein the primer layer adheres the first electrically conductive coating to the polymeric surface of the first substrate; a second substrate spaced apart from the first substrate to define a chamber therebetween; a second electrically conductive transparent coating on a surface of the second substrate such that the first coating is in facing relation to the second coating, wherein at least one of the first and second substrates is transparent; and an electrochromic medium contained in the chamber, the electrochromic medium having reduced luminous transmittance upon application of electrical power to the first and second conductive coatings and establishing an electrical potential through the electrochromic medium, and wherein the electrochromic medium and the primer layer are compati
    Type: Application
    Filed: October 16, 2001
    Publication date: April 25, 2002
    Inventors: Robert M. Hunia, Thomas G. Rukavina, Chia-Cheng Lin
  • Publication number: 20020021481
    Abstract: An electrochromic window assembly includes a security system for monitoring breakage of the electrochromic window assembly. Control circuitry is connected to the electrochromic window assembly for monitoring an electrical characteristic of one or more conductive coatings within the electrochromic window assembly, such as electrical resistance. Upon detecting a change in the electrical resistance, such as that caused by a break in one or more conductive coating, an alarm signal is generated and is sent to an alarm trigger circuit for activating an alarm. A method for monitoring penetration or breakage of an electrochromic window assembly is also provided, which method involves applying electrical activation to an electrochromic assembly and monitoring for a change in an electrical characteristic based on the applied electrical potential. Electrochromic window assemblies incorporating security alarm features in accordance with the present invention are particularly useful in automobile applications.
    Type: Application
    Filed: March 12, 2001
    Publication date: February 21, 2002
    Inventors: Chia Cheng Lin, Thomas G. Rukavina, Yu Jiao
  • Patent number: 6136161
    Abstract: A method for fabricating an electrochromic device having organic polymer substrates is described. Each substrate has a surface coated with an organic polymer primer coating onto which is deposited an electroconductive metal oxide film. An electrochromic material is deposited on one electroconductive film and a complementary electrochromic material is deposited on the other electroconductive film. The resultant two substrates are aligned with the electrochromic materials facing one another. A preformed sheet of an ion-conducting polymer is disposed between those electrochromic layers and the resulting sandwich autoclaved.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: October 24, 2000
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Phillip C. Yu, David L. Backfisch, John B. Slobodnik, Thomas G. Rukavina
  • Patent number: 6110327
    Abstract: The present invention relates to primer for promoting adhesion of an electroconductive metal oxide coating over a plastic substrate, to a method of making such a primer, and to a method of adhering an electroconductive metal oxide coating to a plastic substrate. The primer is a carbonate diol-based crosslinked polyurethane, and is more particularly the reaction product of a carbonate diol, a low molecular weight polyol and methylene diisocyanate.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: August 29, 2000
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Thomas G. Rukavina, Robert M. Hunia
  • Patent number: 5994452
    Abstract: The present invention relates to primer for promoting adhesion of an electroconductive metal oxide coating over a plastic substrate, to a method of making such a primer, and to a method of adhering an electroconductive metal oxide coating to a plastic substrate. The primer is a carbonate diol-based crosslinked polyurethane, and is more particularly the reaction product of a carbonate diol, a low molecular weight polyol and methylene diisocyanate.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: November 30, 1999
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Thomas G. Rukavina, Robert M. Hunia
  • Patent number: 5840429
    Abstract: The present invention relates to an aircraft transparency including an electroconductive metal oxide coating over a rigid plastic substrate, and a polyurethane protective liner over the metal oxide coating, and more specifically to the use of a primer for adhering the metal oxide coating to the substrate and/or a primer for adhering the polyurethane protective liner to the metal oxide coating. The metal oxide primer includes a carbonate diol-based crosslinked polyurethane. The polyurethane primer is selected from the group consisting of a crosslinked copolymer of acrylic acid and substituted acrylates such as 2-ethylhexylacrylate; a crosslinked copolymer of cyanoethylacrylate and acrylic acid; and a crosslinked terpolymer of 2-ethylhexylacrylate, cyanoethylacrylate and acrylic acid.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: November 24, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Thomas G. Rukavina, Robert M. Hunia
  • Patent number: 5776548
    Abstract: The present invention relates to a primer for adhering a polyurethane to a metal oxide coating, to a method of making such a primer, and to a method of adhering a polyurethane protective liner to a metal oxide coating. The primer is a reaction product of a crosslinking agent and a polymer selected from the group consisting of a copolymer of 2-ethylhexylacrylate and acrylic acid, a copolymer of cyanoethylacrylate and acrylic acid and a terpolymer of cyanoethylacrylate, 2-ethylhexylacrylate and acrylic acid.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: July 7, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Thomas G. Rukavina, Robert M. Hunia
  • Patent number: 5648149
    Abstract: The purpose of the present invention is to provide novel primer compositions for use in bonding a thermoset polyurethane film to the surface of a polymeric substrate. The novel primer composition of the invention is an elastomeric polymer, particularly polyvinylpyrrolidinone, or a copolymer comprising vinylpyrrolidinone and alkyl acrylate or alkyl methacrylate. The construction of the article of the present invention comprises a transparent polymeric substrate, such as stretched acrylic, a primer layer of polyvinylpyrrolidinone or copolymer of vinylpyrrolidinone and alkyl acrylate or alkyl methacrylate on a surface thereof, and a film of thermoset polyurethane on the primer layer. The polyurethane is preferably a reaction product of isocyanate and a polyol such as polycaprolactone polyol, hexanediol carbonate polyol, cyclohexanedimethanol carbonate polyol, phthalate ester polyol, and hexanediol/cyclohexanedimethanol carbonate polyol.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: July 15, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Thomas G. Rukavina, John B. Slobodnik
  • Patent number: 5471554
    Abstract: Novel acrylic acid copolymer primer compositions are disclosed for bonding electroconductive metal oxide films to plastic substrates for electrochromic articles.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: November 28, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Thomas G. Rukavina, John B. Slobodnik
  • Patent number: 5471338
    Abstract: An electrochromic article comprising plastic substrates and a method for constructing such an article are disclosed wherein two plastic substrates are coated with a primer to adhere an electroconductive metal oxide film, onto which are deposited an electrochromic film and a complementary film respectively. The two coated plastic substrates are assembled to form a cavity into which is placed a solution of monomers which are polymerized to form an ion-conducting copolymer.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: November 28, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Phillip C. Yu, David L. Backfisch, Thomas G. Rukavina
  • Patent number: 5161048
    Abstract: An electrochromic transparency comprising an electrochromic film and an ion-conductive layer disposed between a pair of electrodes is disclosed wherein the optical properties and electrochromic efficiency are improved by means of a metal grid electrode, wherein adhesion of the metal grid to an acidic polymer electrolyte is improved by means of a primer coating comprising a copolymer of acrylamidopropane sulfonic acid and acrylic acid.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: November 3, 1992
    Assignee: PPG Industries, Inc.
    Inventor: Thomas G. Rukavina
  • Patent number: 5124832
    Abstract: An electrochromic transparency comprising an electrochromic film and a preformed, preconditioned ion-conductive polymer sheet laminated between a pair of electrode bearing cell members is disclosed wherein the optimum moisture content of the ion-conducting polymer sheet is maintained by means of a moisture vapor barrier surrounding the perimeter of the cell.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: June 23, 1992
    Assignee: PPG Industries, Inc.
    Inventors: Charles B. Greenberg, Thomas G. Rukavina, David E. Singleton
  • Patent number: 4857407
    Abstract: A low shear modulus thermoplastic polyurethane useful in laminating rigid plies with different coefficients of thermal expansion without warpage is disclosed, along with laminates comprising said low modulus interlayer.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: August 15, 1989
    Assignee: PPG Industries, Inc.
    Inventors: Charles R. Coleman, Thomas G. Rukavina
  • Patent number: 4839454
    Abstract: A titanate/organosilane copolymer is disclosed for use as a primer to promote adhesion between a rigid polymer substrate and an elastomeric interlayer or inorganic coating, or as a release agent to prevent such adhesion depending on the nature of the organic moiety of the organosilane.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: June 13, 1989
    Assignee: PPG Industries, Inc.
    Inventors: Chia-Cheng Lin, Thomas G. Rukavina
  • Patent number: 4816288
    Abstract: A silicate/titanate copolymer is disclosed for use as a primer in adhering rigid polymer substrates to elastomeric interlayers or inorganic coatings.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: March 28, 1989
    Assignee: PPG Industries, Inc.
    Inventors: Thomas G. Rukavina, Chia-Cheng Lin
  • Patent number: 4743503
    Abstract: A titanate/organosilane copolymer is disclosed for use as a primer to promote adhesion between a rigid polymer substrate and an elastomeric interlayer or inorganic coating, or as a release agent to prevent such adhesion depending on the nature of the organic moiety of the organosilane.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: May 10, 1988
    Assignee: PPG Industries, Inc.
    Inventors: Chia-Cheng Lin, Thomas G. Rukavina
  • Patent number: 4741931
    Abstract: A titanate/organosilane copolymer is disclosed for use as a primer to promote adhesion between a rigid polymer substrate and an elastomeric interlayer or inorganic coating, or as a release agent to prevent such adhesion depending on the nature of the organic moiety of the organosilane.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: May 3, 1988
    Assignee: PPG Industries, Inc.
    Inventors: Chia-Cheng Lin, Thomas G. Rukavina