Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11692335 | Sanitary appliance drain connector | Robert Gemmell McAlpine | 2023-07-04 |
| 11525532 | Plumbing connector, assembly and associated methods | Robert Gemmell McAlpine | 2022-12-13 |
| 10626587 | Overflow | Christopher McKendrick, Robert Gemmell McAlpine | 2020-04-21 |
| 10458104 | High flow drain control | Robert Gemmell McAlpine, Christopher McKendrick | 2019-10-29 |
| 10451203 | Push fit connector | — | 2019-10-22 |
| 10337179 | Flood prevention apparatus | — | 2019-07-02 |
| 10190296 | Plumbing apparatus | Chris McKendrick | 2019-01-29 |
| 10077546 | Cartridge for a urinal outlet | — | 2018-09-18 |
| 10030374 | Drainage fitting | — | 2018-07-24 |
| 9926692 | Urinal apparatus | — | 2018-03-27 |
| 9915058 | Outlet for a sanitary unit | — | 2018-03-13 |
| 9790672 | Plumbing overflow | Christopher McKendrick | 2017-10-17 |
| 9567737 | Non-return device | James Kenneth McAlpine | 2017-02-14 |
| D715405 | Overflow | — | 2014-10-14 |
| D598987 | Plumbing fixture | — | 2009-08-25 |
| D598523 | Plumbing fixture | — | 2009-08-18 |
| 6273655 | Anchoring device | James Kenneth McAlpine | 2001-08-14 |
| 5265281 | Stoppers for garbage disposal unit inlets | — | 1993-11-30 |
| D299441 | Plant pot and base combination | — | 1989-01-17 |
| 4518014 | Relief valves for sanitation systems or the like | — | 1985-05-21 |