Patents Assigned to Northern Technologies International Corporation
  • Publication number: 20120040151
    Abstract: The present invention generally relates to rust-resistant tape formulations and/or structures. In one embodiment, the present invention relates to a rust-resistant tape that comprises a polymer base material layer, an adhesive layer and a rust-resistant component. In one embodiment, the adhesive layer adhered to one side of the layer of polymer base material. In another embodiment, the rust-resistant component comprises at least one volatile, or vapor-phase, corrosion inhibitor (VCI) that is placed into the matrix of the polymer base material or the adhesive layer. In still another embodiment, the at least one volatile, or vapor-phase, corrosion inhibitor (VCI) component of the present invention is contained within a discrete layer. In one instance, a rust-resistant tape in accordance with the present invention can be directly applied to a metal surface to be protected.
    Type: Application
    Filed: October 21, 2011
    Publication date: February 16, 2012
    Applicant: NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
    Inventors: Efim Ya Lyublinski, Keiji Uemura, Yefim Vaks
  • Publication number: 20120009082
    Abstract: The present invention relates to methods for preventing and/or reducing the occurrence of corrosion in a variety of articles including, but not limited to, tanks (e.g., storage tanks, septic tanks, fuel tanks, etc.); containers (e.g., shipping containers, storage containers, etc.); semi-closed systems (e.g., fuel systems, septic systems, reservoirs, etc.); and/or closed systems (e.g., waste disposal systems, waste disposal drums or containers, etc.). In another embodiment, the methods of the present invention may be utilized to reduce and/or prevent corrosion in a variety of pipelines (e.g., gas/oil pipelines, water pipelines, sewage lines, etc.). More specifically, the present invention relates to methods for preventing and/or reducing the occurrence of corrosion in a variety of articles including, but not limited to, metallic tanks; metallic containers; pipelines; semi-closed systems; and/or closed systems which are constructed partially or totally from metal. (e.g.
    Type: Application
    Filed: September 8, 2011
    Publication date: January 12, 2012
    Applicant: Northern Technologies International Corporation
    Inventors: Efim Ya Lyublinski, Donald A. Kubik
  • Patent number: 8071200
    Abstract: The present invention generally relates to rust-resistant tape formulations and/or structures. In one embodiment, the present invention relates to a rust-resistant tape that comprises a polymer base material layer, an adhesive layer and a rust-resistant component. In one embodiment, the adhesive layer adhered to one side of the layer of polymer base material. In another embodiment, the rust-resistant component comprises at least one volatile, or vapor-phase, corrosion inhibitor (VCI) that is placed into the matrix of the polymer base material or the adhesive layer. In still another embodiment, the at least one volatile, or vapor-phase, corrosion inhibitor (VCI) component of the present invention is contained within a discrete layer. In one instance, a rust-resistant tape in accordance with the present invention can be directly applied to a metal surface to be protected.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: December 6, 2011
    Assignee: Northern Technologies International Corporation
    Inventors: Efim Ya Lyublinski, Keiji Uemura, Yefim Vaks
  • Publication number: 20110272136
    Abstract: Corrosion management systems protecting against or managing corrosion of various components in generally vertically oriented structures, that can be located one or more of aboveground and underground. The corrosion management system includes a dispenser system that dispenses at least one corrosion inhibitor to the structure desired to be protected at a plurality of different vertical heights. Methods for utilizing corrosion management systems and protecting structures therewith are also disclosed.
    Type: Application
    Filed: May 5, 2011
    Publication date: November 10, 2011
    Applicant: NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
    Inventors: Efim Ya Lyublinski, Yefim Vaks
  • Patent number: 8017203
    Abstract: The present invention relates to methods for preventing and/or reducing the occurrence of corrosion in a variety of articles including, but not limited to, tanks (e.g., storage tanks, septic tanks, fuel tanks, etc.); containers (e.g., shipping containers, storage containers, etc.); semi-closed systems (e.g., fuel systems, septic systems, reservoirs, etc.); and/or closed systems (e.g., waste disposal systems, waste disposal drums or containers, etc.). In another embodiment, the methods of the present invention may be utilized to reduce and/or prevent corrosion in a variety of pipelines (e.g., gas/oil pipelines, water pipelines, sewage lines, etc.). More specifically, the present invention relates to methods for preventing and/or reducing the occurrence of corrosion in a variety of articles including, but not limited to, metallic tanks; metallic containers; pipelines; semi-closed systems; and/or closed systems which are constructed partially or totally from metal. (e.g.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: September 13, 2011
    Assignee: Northern Technologies International Corporation
    Inventors: Efim Ya Lyublinski, Donald A. Kubik
  • Publication number: 20100143664
    Abstract: The present invention generally relates to rust-resistant tape formulations and/or structures. In one embodiment, the present invention relates to a rust-resistant tape that comprises a polymer base material layer, an adhesive layer and a rust-resistant component. In one embodiment, the adhesive layer adhered to one side of the layer of polymer base material. In another embodiment, the rust-resistant component comprises at least one volatile, or vapor-phase, corrosion inhibitor (VCI) that is placed into the matrix of the polymer base material or the adhesive layer. In still another embodiment, the at least one volatile, or vapor-phase, corrosion inhibitor (VCI) component of the present invention is contained within a discrete layer. In one instance, a rust-resistant tape in accordance with the present invention can be directly applied to a metal surface to be protected.
    Type: Application
    Filed: October 3, 2007
    Publication date: June 10, 2010
    Applicant: NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
    Inventors: Efim Lyublinski, Keiji Uemura, Yefim Vaks
  • Patent number: 7217749
    Abstract: A process for rapidly infusing a synthetic resinous substrate with an alkali metal nitrite, comprises (a) essentially completely dissolving the alkali metal nitrite in supercritical carbon dioxide to form a solids-free solution having from about 1 to 15% by weight of the alkali metal nitrite; (b) contacting the synthetic resinous substrate with the solution for a time sufficient to transfer at least a portion of the alkali metal nitrite into the synthetic resinous substrate while maintaining the carbon dioxide under supercritical conditions; and, (c) decreasing pressure or temperature, or both, on the synthetic resinous material sufficiently to evolve carbon dioxide and leave micronized solid alkali metal nitrite crystals in an amount less than 2% by weight essentially uniformly distributed in the synthetic resinous substrate.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: May 15, 2007
    Assignee: Northern Technologies International Corporation
    Inventors: Mehmet A. Gencer, Sunggyu Lee, Abhay Sardesai, Donald A. Kubik
  • Patent number: 7217750
    Abstract: The present invention relates to various processes that utilize one or more supercritical fluids to disperse various inorganic and organic materials, including crystalline materials, into polymeric compositions, substrates or pre-formed articles without the utilization of melt processing of the polymeric compositions or exposing the various inorganic and organic materials and the polymers (or polymeric precursors) to a hot environment. The present invention also describes the unique properties that can be imparted to a polymer/resin composition or article once it has been subjected to a process according to the present invention versus those normally attributable to conventionally treated/processed polymer materials.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: May 15, 2007
    Assignee: Northern Technologies International Corporation
    Inventors: Mehmet A. Gencer, Sunggyu Lee, Abhay Sardesai, Donald A. Kubik
  • Publication number: 20030213936
    Abstract: The present invention relates to corrosion inhibiting formulas. More particularly, in one embodiment the present invention relates to corrosion inhibiting formulas which comprise a mixture of: (i) at least one volatile corrosion inhibitor (VCI); (ii) at least one antioxidant; (iii) at least one alkali or alkaline-earth metal silicate or oxide; and (iv) fumed silica. In another embodiment, the present invention relates to corrosion inhibiting formulas which comprise a mixture of: (i) at least one volatile corrosion inhibitor (VCI); (ii) at least one antioxidant; (iii) at least one alkali or alkaline-earth metal silicate or oxide; (iv) fumed silica; and (v) at least one chemically active compound. Both of the mixtures described above can further include additional additives. In yet another embodiment, the corrosion inhibiting formulas according to the present invention can be placed in any suitable polymer film and/or polymer article.
    Type: Application
    Filed: June 3, 2003
    Publication date: November 20, 2003
    Applicant: Northern Technologies International Corporation
    Inventors: Donald A. Kubik, Boris G. Varshal, Efim Ya. Lyublinski, Barbara A. Nygaard
  • Publication number: 20030207974
    Abstract: The present invention relates to tarnish inhibiting formulas. More particularly, in one embodiment the present invention relates to tarnish inhibiting formulas which comprise a mixture of: (i) at least one carrier; (ii) at least one strong alkali compound; and (iii) at least one compound which yields an insoluble compound. These mixtures can further include one or more additional additives such as antioxidants, corrosion inhibitors, etc. In yet another embodiment, the tarnish inhibiting formulas (and in some cases corrosion inhibiting as well) according to the present invention can be placed in a suitable polymer film and/or polymer article.
    Type: Application
    Filed: June 3, 2003
    Publication date: November 6, 2003
    Applicant: Northern Technologies International Corporation
    Inventors: Donald A. Kubik, Boris G. Varshal, Efim Ya. Lyublinski, Barbara A. Nygaard