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Class Information
Number: 29/6.1
Name: Metal working > Expanded metal making
Description: Process or apparatus, not elsewhere classified, for forming apertures in sheet material and thereafter deforming the apertured portion of the sheet to (1) increase the area of, or change the shape of, the aperture and (2) increase the length or width of the sheet.










Sub-classes under this class:

Class Number Class Name Patents
29/6.2 By use of reciprocating perforator 31


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8685522 Non-slip surface and process for making same Apr. 1, 2014
8595932 Method for making a fin and device for implementing said method Dec. 3, 2013
8518600 Gas channel forming member in fuel cell Aug. 27, 2013
8479395 Method for improved reinforcement baffling and sealing Jul. 9, 2013
8420223 Insert, method for producing the same, and method for producing long product provided with the same Apr. 16, 2013
8336176 Method and tool for producing structured sheet metal layers, method for producing a metal honeycomb body, and catalyst carrier body Dec. 25, 2012
8276249 Device and method for widening metal elements Oct. 2, 2012
8256075 Grid for a battery plate, method of producing the same, and battery using the same Sep. 4, 2012
8256074 Grid for battery plate, method of producing the same, and battery using the same Sep. 4, 2012
8176634 Method of manufacturing a well screen May. 15, 2012
8146218 Method for making solid edge gutter screen Apr. 3, 2012
8142935 Apparatus for producing a battery plate expanded grid Mar. 27, 2012
8087134 Process for making a heat exchanger Jan. 3, 2012
7950119 Battery pole plate grid producing method, and battery producing method May. 31, 2011
7934300 Method for producing expanded metal profiles May. 3, 2011
7934301 Method of manufacturing expanded metal May. 3, 2011
7814628 Grid for a battery plate, method of producing the same, and battery using the same Oct. 19, 2010
7735205 Expanded metal machine and method of producing expanded metal Jun. 15, 2010
7604766 Core metal insert with stress relief and method of making same Oct. 20, 2009
7389811 Expanded metal Jun. 24, 2008
7171988 Tubing for hydrostatic forming, hydrostatic forming apparatus, and hydrostatic forming method using the apparatus Feb. 6, 2007
7155797 Continuous manufacturing system for composite aluminum panels Jan. 2, 2007
7012231 Microwave component heating apparatus Mar. 14, 2006
7007354 Process for making ornamental device Mar. 7, 2006
6998590 Microwave component heating method Feb. 14, 2006
6944942 Apparatus for one-step rotary forming of uniform expanded mesh Sep. 20, 2005
6886439 Paper elimination in the production of battery plates May. 3, 2005
6797403 Continuous extruded lead alloy strip for battery electrodes Sep. 28, 2004
6782921 High-strength steel pipe excellent in formability and burst resistance Aug. 31, 2004
6749950 Expanded grid Jun. 15, 2004
6704981 Superplastic forming method Mar. 16, 2004
6691386 One-step rotary forming of uniform expanded mesh Feb. 17, 2004
6629016 Apparatus and method of manufacturing expanded sheet metal Sep. 30, 2003
6609279 Filling material, and method of and arrangement for making such a filling material Aug. 26, 2003
6532787 Process of manufacturing a core metal insert Mar. 18, 2003
6532995 Super-high-strength line pipe excellent in low temperature toughness and production method thereof Mar. 18, 2003
6526637 Device for continuous production of foil expanded metal Mar. 4, 2003
6425181 Method and a machine for the production of accumulator plates Jul. 30, 2002
6419146 Metal sandwich structure with integral hardpoint Jul. 16, 2002
6349774 Compositions of matter for stopping fires, explosions and oxidations of materials and build up of electrostatic charges Feb. 26, 2002
6327772 Method for fabricating a planar eversible lattice which forms a stent when everted Dec. 11, 2001
6243932 Manufacturing method of expanded grid and its manufacturing apparatus Jun. 12, 2001
6221506 Bushing base with mounted nozzles Apr. 24, 2001
6212744 Apparatus for expanding a metal sheet Apr. 10, 2001
6202271 Method and apparatus for manufacturing expanded mesh sheet and battery using this expanded mesh sheet Mar. 20, 2001
6167601 Method for manufacturing ventilated sheet-metal floor members Jan. 2, 2001
6156444 Structure for and method of manufacturing aerodynamic expanded metal Dec. 5, 2000
6145363 Forming machine for metal strips, in particular for the manufacture of plates for electrics accumulators Nov. 14, 2000
6089325 Compositions of matter for stopping fires, explosions and oxidations of materials and build up of electrostatic charges and method and apparatus for making same Jul. 18, 2000
6062316 Compositions of matter for stopping fires, explosions and oxidations of materials and build up of electrostatic charges May. 16, 2000

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