Patents by Inventor Johan Markstedt

Johan Markstedt 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: 9682874
    Abstract: A ballast water treatment system includes at least one UV-light reactor with at least one UV-lamp, an inlet line for ballast water to be treated connected to the reactor and an outlet line connected to the reactor. The system includes a cleaning system for periodic cleaning of the reactor, including a water inlet line connected to the reactor for supplying water, a container with concentrated CIP-liquid connected to the reactor, a CIP-liquid inlet line connecting the container to the reactor, a dosage pump arranged in the CIP-liquid inlet line for supplying a predetermined amount of concentrated CIP-liquid to the reactor to mix with the water, a circuit comprising the reactor and a pump arranged in the circuit for circulation of water mixed with the concentrated CIP-liquid.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: June 20, 2017
    Assignee: ALFAWALL AKTIEBOLAG
    Inventors: Johan Markstedt, Staffan Cavalli-Björkman, Peter Sahlén
  • Publication number: 20170096350
    Abstract: A ballast water treatment system includes at least one UV-light reactor with at least one UV-lamp, an inlet line for ballast water to be treated connected to the reactor and an outlet line connected to the reactor. The system includes a cleaning system for periodic cleaning of the reactor, including a water inlet line connected to the reactor for supplying water, a container with concentrated CIP-liquid connected to the reactor, a CIP-liquid inlet line connecting the container to the reactor, a dosage pump arranged in the CIP-liquid inlet line for supplying a predetermined amount of concentrated CIP-liquid to the reactor to mix with the water, a circuit comprising the reactor and a pump arranged in the circuit for circulation of water mixed with the concentrated CIP-liquid.
    Type: Application
    Filed: October 2, 2015
    Publication date: April 6, 2017
    Applicant: ALFAWALL AKTIEBOLAG
    Inventors: Johan MARKSTEDT, Staffan CAVALLI-BJÖRKMAN, Peter SAHLÉN
  • Publication number: 20090321365
    Abstract: The present invention relates to a system for treating contaminated ballast water, comprising water inlets and outlets, piping connected to said inlets and outlets, at least one treatment unit connected to said piping, which treatment unit comprises UV radiation means, and catalysts, capable of, during operation, create photo-catalytic reactions in ballast water flowing through said unit, filter means for said ballast water and valve means for controlling the flow through said piping, treatment unit and filter means, characterised in control unit capable of, controlling and monitoring of said system for ensuring that no untreated water leaves the system in an uncontrolled manner.
    Type: Application
    Filed: September 26, 2007
    Publication date: December 31, 2009
    Inventors: Emil Eriksson, Niclas Dahl, Per Borin, Johan Markstedt, Peter Svensson, Carl Tullstedt