Class E04F : FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Subclass 11/025: 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 characterised by the supporting structure Stairways having stringers
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12258764 | Staircase with adjustable height risers | Feb 24, 23 | Mar 25, 25 | Not available |
| 11993936 | Splicing step device | Nov 10, 23 | May 28, 24 | Not available |
| 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 |
| 11725391 | Modular staircase and method of constructing same | Aug 04, 22 | Aug 15, 23 | Not available |
| 11718998 | Stair stringer | Aug 18, 21 | Aug 08, 23 | MIRO Industries, Inc. |
| 11585109 | Lifeguard observation station | Aug 13, 21 | Feb 21, 23 | Aqua Conscience Holdings LLC |
| 11447965 | Platform system | Jun 28, 19 | Sep 20, 22 | Safe Rack LLC |
| 11406083 | Modular pet step sections for staircase | Mar 20, 18 | Aug 09, 22 | Not available |
| 11268276 | Modular deck apparatus | Mar 20, 20 | Mar 08, 22 | Oliver Technologies, Inc. |
| 11085191 | Stair assembly with rise adjustable step support brackets | Oct 07, 19 | Aug 10, 21 | Fortress Iron, LP |
| 11060297 | Stair system | Dec 06, 19 | Jul 13, 21 | Not available |
| 10988938 | Self-leveling platform stairs | Jan 08, 20 | Apr 27, 21 | Safesmart LLC |
| 10914075 | Hidden construction bracket and related method | Jan 07, 20 | Feb 09, 21 | National Nail Corp. |
| 10876296 | Method of assembly of modular stair assistance device for pets | Dec 29, 18 | Dec 29, 20 | Not available |
| 10794062 | Modular stair system | Jul 12, 19 | Oct 06, 20 | EMEH, Inc. |
| 10745924 | Angle adjustable tread holding brackets for staircases | Jun 02, 17 | Aug 18, 20 | Not available |
| 10640983 | Platform system | Mar 22, 17 | May 05, 20 | Safe Rack LLC |
| 10370856 | Modular stair system | Dec 15, 17 | Aug 06, 19 | Platform Manufacturing Group |
| 10358871 | Platform system | Jun 05, 15 | Jul 23, 19 | Safe Rack LLC |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0109,595 | STAIRWAY, SET OF STAIRS AND METHOD FOR PRODUCING A SET OF STAIRS | Dec 01, 22 | Apr 03, 25 | Peri SE |
| 2025/0059,770 | Modular Stairs | Aug 15, 24 | Feb 20, 25 | Not available |
| 2024/0279,936 | MODULAR STAIRCASE | Apr 26, 24 | Aug 22, 24 | Not available |
| 2024/0191,507 | STAIR SYSTEM | Dec 08, 23 | Jun 13, 24 | Not available |
| 2023/0313,535 | STAIR STRINGER ASSEMBLY, SYSTEM, AND METHOD | Jun 08, 23 | Oct 05, 23 | Not available |
| 2020/0217,077 | HIDDEN CONSTRUCTION BRACKET AND RELATED METHOD | Jan 07, 20 | Jul 09, 20 | Not available |
| 2019/0338,529 | MODULAR STAIR SYSTEM | Jul 12, 19 | Nov 07, 19 | Not available |
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