DAYTON PROGRESS CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 650
 
  
 
B21K MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS 518
 
  
 
B26F PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING 412
 
  
 
B21J FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES 317
 
  
 
C21D MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS 342
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 250
 
  
 
B23Q DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING 139
 
  
 
B24B MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING 165
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
C22C ALLOYS 171

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9481023 Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steelsDec 29, 14Nov 01, 16[B21K, B21J, B22F, B21D, C21D, B26F, B32B]
9327335 Ball-lock retainers and methods for controlling ball bounce in a ball-lock retainerAug 31, 10May 03, 16[B21D]
9132567 Tools with a thermo-mechanically modified working region and methods of forming such toolsMar 13, 08Sep 15, 15[B21K, B21J, B22F, B21D, C21D, B26F, C22C]
8968495 Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steelsFeb 13, 09Mar 03, 15[B21K, B21J, B22F, C21D, B21D, B26F]
7204181 Reversible floating punch retainer for punch change retainer toolJul 02, 04Apr 17, 07[B21D]
6324768 Ball lock punch retainer and checking gage systemApr 18, 00Dec 04, 01[B23Q, G01B]
6120358 Apparatus and method for grinding a punchFeb 19, 99Sep 19, 00[B24B]
5881625 Automatic or programmable change-over ball lock punch retainer apparatusMar 03, 97Mar 16, 99[B26F]
5284069 Ball lock punch retainerDec 15, 92Feb 08, 94[B21K]
5181438 Ball lock punch retainerMay 31, 91Jan 26, 93[B21K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5307720 Punch retainer with punch release toolExpiredSep 03, 93May 03, 94[B26F]
5197368 Punch and die retainer and release mechanismExpiredOct 15, 92Mar 30, 93[B26F]
5038599 Ball lock punch retainerExpiredApr 10, 90Aug 13, 91[B26D, B21D]

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