Patents by Inventor Lev SHAPIRO

Lev SHAPIRO 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).

  • Recovery of oxalic acid from industrial ferrous oxalate
    Patent number: 10843994
    Abstract: The invention provides a process for recovering oxalic acid used in ferrous metal pickling procedures, thereby reducing the total cost and environmental load of the pickling treatments.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: November 24, 2020
    Assignee: TAL OR ECOLOGY LTD.
    Inventors: Reuben David Schapiro, Vladimir Boiko, Lev Shapiro
  • RECOVERY OF OXALIC ACID FROM INDUSTRIAL FERROUS OXALATE
    Publication number: 20190359549
    Abstract: The invention provides a process for recovering oxalic acid used in ferrous metal pickling procedures, thereby reducing the total cost and environmental load of the pickling treatments.
    Type: Application
    Filed: September 11, 2017
    Publication date: November 28, 2019
    Inventors: Reuben David SCHAPIRO, Vladimir BOIKO, Lev SHAPIRO
  • Method and formulations for removing rust and scale from steel and for regenerating pickling liquor in hot-dip galvanization process
    Patent number: 9752238
    Abstract: This invention provides a cost-effective hot-dip galvanization process for ferrous metals, which is regardful to the environment and to the health of the personnel.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: September 5, 2017
    Assignee: Green Future Ltd.
    Inventors: Reuben Schapiro, Vladimir Boiko, Lev Shapiro
  • METHOD AND FORMULATIONS FOR REMOVING RUST AND SCALE FROM STEEL AND FOR REGENERATING PICKLING LIQUOR IN HOT-DIP GALVANIZATION PROCESS
    Publication number: 20170037520
    Abstract: This invention provides a cost-effective hot-dip galvanization process for ferrous metals, which is regardful to the environment and to the health of the personnel.
    Type: Application
    Filed: April 15, 2015
    Publication date: February 9, 2017
    Applicant: GREEN FUTURE LTD.
    Inventors: Reuben SCHAPIRO, Vladimir BOIKO, Lev SHAPIRO
  • Gear actuated angle measurement tool
    Patent number: 8413344
    Abstract: A multiple gear driver having first and second fixed gears and first and second rotatable gears, the first fixed and rotatable gears located on a first member, and the second fixed and rotatable gears located on a second member, the first and second fixed gears having a common axis so that the first fixed gear drives the second rotatable gear and the second fixed gear drives the first rotatable gears when the first and second member are moved relative to each other.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: April 9, 2013
    Inventor: Marc Lev Shapiro
  • GEAR ACTUATED ANGLE MEASUREMENT TOOL
    Publication number: 20110005093
    Abstract: An angle measurement tool having two legs joined together about a common axis so that one of the legs rotates with respect to the other to form a desired angle the value of which is read utilizing gears that are housed in said legs in combination with indicia means indicating the degree of rotation of the gears.
    Type: Application
    Filed: July 9, 2010
    Publication date: January 13, 2011
    Inventor: Marc Lev Shapiro
  • Gear actuated angle measurement tool
    Patent number: 7752765
    Abstract: An angle measurement tool having two legs joined together about a common axis so that one of the legs rotates with respect to the other to form a desired angle the value of which is read utilizing gears that are housed in said legs in combination with indicia means indicating the degree of rotation of the gears.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: July 13, 2010
    Inventor: Marc Lev Shapiro
  • Gear actuated angle measurement tool
    Publication number: 20090235545
    Abstract: An angle measurement tool having two legs joined together about a common axis so that one of the legs rotates with respect to the other to form a desired angle the value of which is read utilizing gears that are housed in said legs in combination with indicia means indicating the degree of rotation of the gears.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 24, 2009
    Inventor: Mark Lev Shapiro
  • Angle measurement tool
    Patent number: 7406774
    Abstract: An angle measurement tool in which the assembled components result in only two moving parts that are pivoted relative to each other and wherein the pivot axis is the geographic center of the angle measurement component and wherein a miter joint angle, the correspondent actual angle, the complementary angle of the actual angle and the supplementary angle of the actual angle can be read simultaneously.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: August 5, 2008
    Inventor: Marc Lev Shapiro
  • Angle measurement tool
    Patent number: 7278221
    Abstract: An angle measurement tool having two legs held together by a removable adjustment member in which the legs are joined together about a common axis so that one of the legs rotates with respect to the other to form a desired angle the value of which is read using indexing means located on both legs.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: October 9, 2007
    Inventor: Marc Lev Shapiro
  • Angle measurement tool
    Patent number: 6804895
    Abstract: An angle measuring tool having pivotally connected members and an angle measurement index with and off center portion positioned so that upon the rotation of one member with respect to the other the angle between the two members can be accurately determined with no possibility of slippage of the angle measurement index due to the off center portion mating with one of the members.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: October 19, 2004
    Inventor: Marc Lev Shapiro
  • Angle measurement tool
    Publication number: 20040006881
    Abstract: An angle measuring tool having pivotally connected members and an angle measurement index with and off center portion positioned so that upon the rotation of one member with respect to the other the angle between the two members can be accurately determined with no possibility of slippage of the angle measurement index due to the off center portion mating with one of the members.
    Type: Application
    Filed: February 14, 2003
    Publication date: January 15, 2004
    Inventor: Marc Lev Shapiro
  • Angle measurement tool
    Patent number: 6237238
    Abstract: An angle measurement tool in which the assembled components result in only two moving parts that are pivoted relative to each other and wherein the pivot axis is the geographic center of the angle measurement component and wherein a miter joint angle, the correspondent actual angle, the complementary angle of the actual angle and the supplementary angle of the actual angle can be read simultaneously.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: May 29, 2001
    Inventor: Marc Lev Shapiro