Class E04F : FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
Subclass 11/108: 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 wood
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12098554 | Returned stair tread having moisture compensating joint and method for making the same | Apr 03, 23 | Sep 24, 24 | Young Manufacturing Company, Inc. |
| 11619050 | Returned stair tread having moisture compensating joint and method for making the same | Jun 29, 21 | Apr 04, 23 | Young Manufacturing Company, Inc. |
| 11332941 | Device and methods for making a stair tread and a molded curved stair tread | Jun 23, 20 | May 17, 22 | Mannington Mills Inc. |
| 10260239 | Wedge tread stair box system | Jul 27, 17 | Apr 16, 19 | Convert-A-Stair, L.L.C. |
| 9890540 | Floor or wall covering system with laying units which can be combined in a modular manner | Apr 26, 12 | Feb 13, 18 | Weitzer Holding GmbH |
| 9593489 | Tread for steel-pan stairways | Apr 28, 16 | Mar 14, 17 | PROGRESSIVE SAFETY SOLUTIONS, LLC |
| 9121185 | Prefabricated staircase and finishing arrangement and installation method therefor | Jun 19, 13 | Sep 01, 15 | Not available |
| 8966859 | Staircase and method for construction | Mar 05, 14 | Mar 03, 15 | Signature Companies |
| 8707638 | Staircase and method for construction | Apr 03, 12 | Apr 29, 14 | Signature Companies |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0035,285 | BUILDING COMPONENTS, STRUCTURES FORMED THEREFROM AND RELATED METHODS | Jul 19, 23 | Feb 01, 24 | Not available |
| 2022/0003,001 | RETURNED STAIR TREAD HAVING MOISTURE COMPENSATING JOINT AND METHOD FOR MAKING THE SAME | Jun 29, 21 | Jan 06, 22 | Not available |
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