Class E04F : FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Subclass 11/035: 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 consisting of a plurality of assembled modular parts without further support
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11993936 | Splicing step device | Nov 10, 23 | May 28, 24 | Not available |
| 11970865 | Modular staircase systems | Nov 05, 19 | Apr 30, 24 | CB Interests Inc. |
| 11946258 | Adjustable step system | Jul 12, 23 | Apr 02, 24 | Not available |
| 11725391 | Modular staircase and method of constructing same | Aug 04, 22 | Aug 15, 23 | Not available |
| 11692356 | Fully-assembled staircase system and assembly method | May 26, 20 | Jul 04, 23 | CHANGZHOU VOCATIONAL INSTITUTE OF ENGINEERING |
| 11591802 | Modular access system | Feb 27, 21 | Feb 28, 23 | Material Control Inc. |
| 11441318 | Modular staircase and method of constructing same | May 22, 20 | Sep 13, 22 | Not available |
| 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. |
| 10640983 | Platform system | Mar 22, 17 | May 05, 20 | Safe Rack LLC |
| 10434028 | Stairway step aid | May 31, 16 | Oct 08, 19 | Not available |
| 10407914 | Spacer for prefabricated spiral staircase and prefabricated spiral staircase using same | Jan 10, 17 | Sep 10, 19 | Not available |
| 10370856 | Modular stair system | Dec 15, 17 | Aug 06, 19 | Platform Manufacturing Group |
| 10260239 | Wedge tread stair box system | Jul 27, 17 | Apr 16, 19 | Convert-A-Stair, L.L.C. |
| 10253465 | Modular building construction using composite interconnected frame panels | Jun 29, 17 | Apr 09, 19 | Not available |
| 10214912 | Kit of parts for modular staircase | Sep 10, 15 | Feb 26, 19 | Lograr Group Limited |
| 10106986 | Curved pathway | Dec 11, 17 | Oct 23, 18 | Not available |
| 10100526 | Modular shelving and step assembly | May 13, 16 | Oct 16, 18 | Not available |
| 9856653 | Modular precast concrete steps | Sep 14, 17 | Jan 02, 18 | Not available |
| 9840847 | Curved staircase | Sep 02, 16 | Dec 12, 17 | Not available |
| 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 |
| 2025/0067,056 | MODULAR LEVEL ACCESS STRUCTURES | Nov 13, 24 | Feb 27, 25 | Not available |
| 2024/0344,330 | PRECAST CONCRETE STAIRWAY CONSTRUCTION METHOD | Oct 18, 22 | Oct 17, 24 | Not available |
| 2024/0191,508 | MODULAR CONSTRUCTION CONNECTION MECHANISM | Feb 23, 24 | Jun 13, 24 | Not available |
| 2023/0212,859 | Support for raised floors with shaped base and fixing brackets | May 13, 21 | Jul 06, 23 | Not available |
| 2022/0381,037 | STEP FOR A MODULAR STAIRCASE AND RELATIVE BUILDING METHOD | Oct 16, 20 | Dec 01, 22 | Not available |
| 2020/0407,980 | MODULAR STAIRCASE AND METHOD OF CONSTRUCTING SAME | May 22, 20 | Dec 31, 20 | Not available |
| 2020/0224,427 | PLATFORM SYSTEM | Mar 26, 20 | Jul 16, 20 | Not available |
| 2019/0203,476 | METHOD OF ASSEMBLY OF MODULAR STAIR ASSISTANCE DEVICE FOR PETS | Dec 29, 18 | Jul 04, 19 | Not available |
| 2019/0100,924 | MODULAR SHELVING AND STEP ASSEMBLY | Oct 15, 18 | Apr 04, 19 | Not available |
| 2018/0347,204 | STEP FOR MODULAR STAIRCASE | Jun 14, 16 | Dec 06, 18 | Not available |
| 2017/0275,888 | PLATFORM SYSTEM | Mar 22, 17 | Sep 28, 17 | Not available |
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