Class E04F : FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Subclass 11/112: Stairways, ramps, or like structures (mounting or marking-off stairways E04F 21/26; of temporary construction E04G 27/00); Balustrades; Handrails (ladders permanently attached to fixed structures E06C 9/00) Stairways; Layouts thereof Treads (E04F 11/09 takes precedence) of metal
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12196041 | Ceiling ladder, deep step and method | Oct 10, 23 | Jan 14, 25 | Werner Co. |
| 11753829 | Telescopic staircase system and uses thereof | Jun 12, 19 | Sep 12, 23 | METALTECH-OMEGA INC. |
| 11739544 | Platform system | Mar 17, 22 | Aug 29, 23 | Safe Rack LLC |
| 11732481 | Cantilever stair assembly | Mar 04, 19 | Aug 22, 23 | CONSTRUCTION DESIGN & SOLUTIONS, INC. |
| 11447965 | Platform system | Jun 28, 19 | Sep 20, 22 | Safe Rack LLC |
| 11215010 | Ceiling ladder, deep step and method | Jan 17, 20 | Jan 04, 22 | Werner Co. |
| 10676938 | Tread surface for decking system | May 07, 19 | Jun 09, 20 | Homecare Products, Inc. |
| 10640983 | Platform system | Mar 22, 17 | May 05, 20 | Safe Rack LLC |
| 10487514 | Tread mounting system for spiral staircase | Jul 10, 19 | Nov 26, 19 | Safe Rack LLC |
| 10378212 | Tread mounting system for spiral staircase | May 23, 18 | Aug 13, 19 | Safe Rack LLC |
| 10358871 | Platform system | Jun 05, 15 | Jul 23, 19 | Safe Rack LLC |
| 10006207 | Open stair case with center uncut stringer | Sep 18, 15 | Jun 26, 18 | Not available |
| 9725904 | Architectural pavements in elevated exterior deck applications | Jan 08, 16 | Aug 08, 17 | Casata Technologies Inc. |
| 9683372 | Stair systems and wall assemblies comprising same | Mar 18, 16 | Jun 20, 17 | Diamond Stairs Inc. |
| 9644375 | Portable pathway apparatus | Feb 22, 15 | May 09, 17 | Not available |
| 9644376 | Tank farm system | Feb 23, 15 | May 09, 17 | Not available |
| 9593489 | Tread for steel-pan stairways | Apr 28, 16 | Mar 14, 17 | PROGRESSIVE SAFETY SOLUTIONS, LLC |
| 9422726 | Stair system | Oct 27, 11 | Aug 23, 16 | BECKM, LLC |
| 9290947 | Stair systems and wall assemblies comprising same | Jul 31, 12 | Mar 22, 16 | Diamond Stairs Inc. |
| 9169650 | Stair tread | Dec 02, 14 | Oct 27, 15 | Not available |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0101,806 | CEILING LADDER, DEEP STEP AND METHOD | Dec 09, 24 | Mar 27, 25 | Not available |
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