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Class Information
Number: 52/188
Name: Static structures (e.g., buildings) > Stepped; e.g., stair > Tread unit on horizontal tread member connected to riser
Description: Structure in which a horizontal surface (tread) member, is supported above another discrete horizontal member, the latter being connected to a vertical front member (riser).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8371090 |
Stair tread overlay and method |
Feb. 12, 2013 |
| 8316595 |
Collapsible staircase |
Nov. 27, 2012 |
| 8307603 |
Methods of constructing stair unit |
Nov. 13, 2012 |
| 8281526 |
Stairway tread and riser assembly |
Oct. 9, 2012 |
| 8266842 |
Stadium seating construction |
Sep. 18, 2012 |
| 8196361 |
Stairway |
Jun. 12, 2012 |
| 8141321 |
Stair tread overlay and method |
Mar. 27, 2012 |
| 8033063 |
Stair system |
Oct. 11, 2011 |
| 7971399 |
Stairway |
Jul. 5, 2011 |
| 7946085 |
Stair stringer assembly |
May. 24, 2011 |
| 7905060 |
Tiered seating system |
Mar. 15, 2011 |
| 7900403 |
Log staircase and a method of producing components for a log staircase |
Mar. 8, 2011 |
| 7849643 |
Structural step unit with run portion and rise portion |
Dec. 14, 2010 |
| 7845123 |
Staircase block and staircase construction method using the staircase block |
Dec. 7, 2010 |
| 7757443 |
Support system for stair treads |
Jul. 20, 2010 |
| 7739838 |
Quickly and easily assembleable portable bleacher |
Jun. 22, 2010 |
| 7469516 |
Modular staircase construction |
Dec. 30, 2008 |
| 7464505 |
Staircase finishing plate arrangement |
Dec. 16, 2008 |
| 7380376 |
Non-slip structure |
Jun. 3, 2008 |
| 7191568 |
Modular safety surface and method for preparing the same |
Mar. 20, 2007 |
| 7165362 |
Glass support member |
Jan. 23, 2007 |
| 7073297 |
Component and method for restoring a stairway |
Jul. 11, 2006 |
| 7047698 |
Exterior step system made from masonry units attached via a metal frame |
May. 23, 2006 |
| 6960273 |
Process for renovation of a staircase |
Nov. 1, 2005 |
| 6920725 |
False tread modules |
Jul. 26, 2005 |
| 6895717 |
Component and method for restoring a stairway |
May. 24, 2005 |
| 6826875 |
Temporary stairway rail and baluster support |
Dec. 7, 2004 |
| 6691469 |
Flashing for roof penetrations |
Feb. 17, 2004 |
| 6665987 |
Staircase, staircase repair device and methods of fabricating same |
Dec. 23, 2003 |
| 6634145 |
Modular stone stair system |
Oct. 21, 2003 |
| 6543191 |
Prefabricated stairway and method |
Apr. 8, 2003 |
| 6523310 |
Tread and handrail combination structure of a staircase |
Feb. 25, 2003 |
| 6516574 |
Modular stairway system, method for erecting stairway and kit therefor |
Feb. 11, 2003 |
| 6467234 |
Stairway system |
Oct. 22, 2002 |
| 6408577 |
Steps for swimming pool |
Jun. 25, 2002 |
| 6397529 |
Adjustable modular staircase |
Jun. 4, 2002 |
| 6374556 |
Concrete elevation assembly, hollow concrete block, and method of making |
Apr. 23, 2002 |
| 6345475 |
Stair guard |
Feb. 12, 2002 |
| 6318033 |
Staircase, staircase repair device and methods of fabricating same |
Nov. 20, 2001 |
| 6230454 |
Universal modular tread and riser unit |
May. 15, 2001 |
| 6176049 |
Concrete elevation assembly, hollow concrete block, and method of making |
Jan. 23, 2001 |
| 6173540 |
Stair tread |
Jan. 16, 2001 |
| 6155007 |
Surface tread for a spiral staircase |
Dec. 5, 2000 |
| 6125598 |
Modular traditional staircase |
Oct. 3, 2000 |
| 6112480 |
Modular Staircase |
Sep. 5, 2000 |
| 6082061 |
Stair tread |
Jul. 4, 2000 |
| 6044598 |
Elongated member of extruded plastic suitable for flooring, decking, seating, and like uses |
Apr. 4, 2000 |
| 6029408 |
Pre-fabricated step and stairway system |
Feb. 29, 2000 |
| 5924249 |
Stairway step assembly |
Jul. 20, 1999 |
| 5907935 |
Adjustable modular staircase |
Jun. 1, 1999 |
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