LOUISVILLE LADDER INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E06C LADDERS 76
 
  
 
2504 STEPS, LADDERS AND SCAFFOLDS73
 
  
 
E04G SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS319
 
  
 
B41J TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS 1101

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D813417 Rung lock for a ladderDec 02, 16Mar 20, 18[2504]
D718875 Step for a ladderMay 17, 13Dec 02, 14[2504]
8807277 Shoe bracket assembly for attachment to a bottom of a rail of ladderMay 17, 13Aug 19, 14[E06C]
D650915 Brace for a step of a stepladderOct 20, 10Dec 20, 11[2504]
D627487 Ladder top capJul 14, 10Nov 16, 10[2504]
7753170 Ladder top for retaining a ladder against extrinsic surfacesMar 21, 07Jul 13, 10[E06C]
D600820 Pail shelfSep 03, 08Sep 22, 09[2504]
D597685 Ladder topJun 09, 08Aug 04, 09[2504]
D549356 Ladder topJul 28, 06Aug 21, 07[2504]
7095428 Systems and methods for marking ladders using sublimation heat transferSep 09, 03Aug 22, 06[B41J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0090,920 BRACE FOR A STEP OF A STEPLADDER AND A STEPLADDER EMPLOYING SUCH BRACESAbandonedOct 14, 10Apr 19, 12[E06C]
2010/0012,428 END COVER FOR A LADDER RAILAbandonedJul 19, 08Jan 21, 10[E06C]
2009/0283,361 MULTI-TOOL LADDER TOPAbandonedMay 19, 08Nov 19, 09[E06C]
2008/0264,724 ATTIC LADDERAbandonedApr 26, 07Oct 30, 08[E06C]
2008/0196,973 LADDER LEVELLING APPARATUSAbandonedFeb 20, 07Aug 21, 08[E06C]
2008/0083,583 LADDER TOP FOR SUPPORTING A LADDER AGAINST FLAT AND NON-FLAT SURFACESAbandonedOct 09, 06Apr 10, 08[E06C]
6516546 Display placard for laddersExpiredAug 28, 00Feb 11, 03[G09F]
6499563 Protective cap for laddersExpiredJun 14, 01Dec 31, 02[E06C, E04G]
5791434 Mobile warehouse ladderExpiredNov 19, 96Aug 11, 98[E06C]
5673768 Ladder wear protection deviceExpiredFeb 02, 96Oct 07, 97[A47B]
D334240 Ladder top coverExpiredFeb 08, 91Mar 23, 93[]
5069309 Rolling tower scaffold and method and tooling apparatus for manufacturing the sameExpiredSep 28, 89Dec 03, 91[E04G]
4959107 Method and apparatus for treating ladder rungs for forming assembly with ladder railsExpiredApr 03, 89Sep 25, 90[C22F]

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