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About us

Sergey Kalachev

Sergey Kalachev

Russian Patent Attorney Eurasian Patent Attorney
Deputy Head of Сhemical & Life Sciences Department
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  • D. Mendeleyev University of Chemical Technology (1999–2005)
  • Russian State Academy of Intellectual Property (2008–2011)


  • Russian Patent Office (2005–2008)
  • Scientific and Technical Center "Tonkie tekhnologii" (2008–2009)
  • Isonica (2009–2012)
  • Gorodissky and Partners since 2012


  • Russian
  • English
  • Patents in the field of:
    • Crude oil and natural gas
    • Extraction of oil from shale
    • Drilling for oil, gas and shale
    • Mining and processing of uranium ores
    • Mining and processing of iron ores
    • Mining and processing of non-ferrous ores
    • Mining ores and extracting precious metals
    • Mining and processing of rare metal ores
    • Mining minerals for chemical processing and production of fertilizers
    • Mining precious and semi-precious stones
    • Mining natural abrasives
    • Pulp, paper and paperboard production
    • Production of petrochemicals
    • Production of nuclear materials
    • Chemical production
    • Production of basic chemical products
    • Production of industrial gases
    • Manufacture of basic inorganic chemical products
    • Production of lubricants, additives for lubricants and anti-freeze
    • Manufacture of glass and glass products
    • Manufacture of fiberglass
    • Manufacture of ceramic products
    • Manufacture of refractories
    • Production of basic iron, steel and ferrous alloys
    • Refining precious metals
    • Electrolysis of aluminum
    • Powder metallurgy
    • Surface heat treatment and thermal spraying
    • Chemical sources of power
    • Piezo-electrical crystals
    • Recycling of metallic waste and scrap
    • Recycling of non-ferrous metallic waste and scrap
    • Collection, purification and distribution of water
  • Technical fields:
    • General and non-organic chemistry and technology
    • Physical chemistry
    • Electro chemistry
    • Chemistry of steel and alloy
    • Oil chemistry
    • Crystallography
  • Objects:
    • Methods and technologies of producing non-organic substances, petrochemical and gas processing products
    • Methods and technologies of chemical wastes treatment
    • Compositions for oil wells treatment
    • Glass, ceramic products, alloys, methods of their production and application
    • Compositions for electrochemical production
    • Technologies of crystal synthesis


  • “The use in the claims of signs characterizing the intervals of values” (18th Gorodissky annual seminar “IP Protection Strategies for Successful Company Development”, Moscow, October 2020)
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