Class E04F : FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Subclass 11/02: 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
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12258763 | Staircase part structure equipped with study corner | Aug 06, 21 | Mar 25, 25 | Sekisui House Ltd. |
| 12258764 | Staircase with adjustable height risers | Feb 24, 23 | Mar 25, 25 | Not available |
| 12252886 | Floating modular stair system | Oct 04, 21 | Mar 18, 25 | PrimeSource Building Products, Inc. |
| 12195988 | Building | Mar 10, 22 | Jan 14, 25 | 501 Toyota Jidosha Kabushiki Kaisha |
| 12188244 | Pool stair forms and methods of forming pool stairs | Aug 15, 23 | Jan 07, 25 | Imperial Pools Inc. |
| 12122644 | Seat for a stair lift | Dec 09, 21 | Oct 22, 24 | OTOLIFT TRAPLIFTEN B.V. |
| 11993936 | Splicing step device | Nov 10, 23 | May 28, 24 | Not available |
| 11946258 | Adjustable step system | Jul 12, 23 | Apr 02, 24 | Not available |
| 11821202 | Prefabricated concrete form with stairs | Oct 14, 21 | Nov 21, 23 | Framing Systems, Inc. |
| 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. |
| 11725403 | Pool stair forms and methods of forming pool stairs | Oct 04, 21 | Aug 15, 23 | Imperial Pools Inc. |
| 11725391 | Modular staircase and method of constructing same | Aug 04, 22 | Aug 15, 23 | Not available |
| 11697941 | Handrail system and methods of use | Jun 05, 20 | Jul 11, 23 | Not available |
| 11692356 | Fully-assembled staircase system and assembly method | May 26, 20 | Jul 04, 23 | CHANGZHOU VOCATIONAL INSTITUTE OF ENGINEERING |
| 11629500 | Freestanding modular spiral staircase | Dec 31, 20 | Apr 18, 23 | Not available |
| 11591802 | Modular access system | Feb 27, 21 | Feb 28, 23 | Material Control Inc. |
| 11540960 | Sit to stand stair chair | Dec 06, 19 | Jan 03, 23 | Stryker Corporation |
| 11446532 | Exercise apparatus having a stair and slide assembly | Oct 02, 20 | Sep 20, 22 | ProStairs Fitness, 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 |
| 2024/0344,330 | PRECAST CONCRETE STAIRWAY CONSTRUCTION METHOD | Oct 18, 22 | Oct 17, 24 | Not available |
| 2024/0052,655 | WRAPAROUND STEP COVER FASTENING SYSTEM AND METHOD | Aug 10, 23 | Feb 15, 24 | PREST-O-FIT MANUFACTURING, INC. |
| 2019/0093,367 | STAIR SYSTEM AND MANUFACTURING | Aug 30, 18 | Mar 28, 19 | Not available |
| 2018/0363,315 | VEHICLE REPAIR DOCK | Nov 11, 16 | Dec 20, 18 | Not available |
| 2017/0275,887 | Stairway Column with Integral Ventilation | Mar 28, 17 | Sep 28, 17 | Not available |
| 2017/0247,888 | STAIR SYSTEMS AND WALL ASSEMBLIES COMPRISING SAME | May 16, 17 | Aug 31, 17 | Diamond Stairs Inc. |
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