Patents Assigned to ASI Group Ltd.
  • Control of zebra mussels in flow-through service water systems
    Patent number: 9420796
    Abstract: A method for controlling bivalve growth in a service water system of a plant is disclosed. Upon detecting an increase in the number of veligers or settlement stage bivalves, chlorine anion is introduced into the service water to obtain a chlorine anion concentration of between 0.10 and 2.0 mg/l for a period of 10 to 40 days. Also disclosed is a two-stage method for controlling bivalve growth in a service water system.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: August 23, 2016
    Assignee: ASI Group Ltd.
    Inventor: Carmelo Sferrazza
  • Control of zebra mussels in closed service water systems
    Patent number: 9003693
    Abstract: A method for controlling bivalve growth in a static or semi-static service water system of a plant is disclosed. Upon detecting an increase in the concentration of veligers or settlement stage bivalves, potassium is introduced into the service water to obtain a potassium cation concentration of between 10 mg/l and 150 mg/l for a period of 2 to 30 days. The methods are particularly useful for controlling zebra mussel growth in service water systems for fire prevention.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: April 14, 2015
    Assignee: ASI Group Ltd.
    Inventor: Carmelo Sferrazza
  • CONTROL OF ZEBRA MUSSELS IN CLOSED SERVICE WATER SYSTEMS
    Publication number: 20140208635
    Abstract: A method for controlling bivalve growth in a static or semi-static service water system of a plant is disclosed. Upon detecting an increase in the concentration of veligers or settlement stage bivalves, potassium is introduced into the service water to obtain a potassium cation concentration of between 10 mg/l and 150 mg/l for a period of 2 to 30 days. The methods are particularly useful for controlling zebra mussel growth in service water systems for fire prevention.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: ASI GROUP LTD.
    Inventor: Carmelo Sferrazza
  • CONTROL OF ZEBRA MUSSELS IN FLOW-THROUGH SERVICE WATER SYSTEMS
    Publication number: 20140208634
    Abstract: A method for controlling bivalve growth in a service water system of a plant is disclosed. Upon detecting an increase in the number of veligers or settlement stage bivalves, chlorine anion is introduced into the service water to obtain a chlorine anion concentration of between 0.10 and 2.0 mg/l for a period of 10 to 40 days. Also disclosed is a two-stage method for controlling bivalve growth in a service water system.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: ASI Group Ltd.
    Inventor: Carmelo Sferrazza
  • Method for sealing a conduit and composition for use therein
    Patent number: 7544241
    Abstract: A grout for repairing a conduit, such as an underwater conduit comprises, as mixed, from 40 to 50 wt % cement; from 25 to 35 wt % water; and, from 0.05 to 0.25 wt % psyllium husk; based on the total weight of the grout as mixed.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: June 9, 2009
    Assignee: ASI Group Ltd.
    Inventor: Robert Owen Clarke
  • METHOD FOR SEALING A CONDUIT AND COMPOSITION FOR USE THEREIN
    Publication number: 20080023091
    Abstract: A grout for repairing a conduit, such as an underwater conduit comprises, as mixed, from 40 to 50 wt % cement; from 25 to 35 wt % water; and, from 0.05 to 0.25 wt % psyllium husk; based on the total weight of the grout as mixed.
    Type: Application
    Filed: July 25, 2006
    Publication date: January 31, 2008
    Applicant: ASI Group Ltd.
    Inventor: Robert Owen Clarke