| SPECTRAFLO 0477718 · TMA274272 | FERRO CORPORATION (AN OHIO CORPORATION) | 1 Chemicals5 Pharmaceuticals | Registered | 1982 |
| SPECTROFLUX 0400510 · TMA224068 | Thermo Fisher (Heysham) Limited | 1 Chemicals | Registered | 1977 |
| SPECTRAL 2036420 · TMA1272101 | AMI Attachments Inc. | 7 Machines | Registered | 2024 |
| SPECTROFLO 1860427 · TMA1075763 | Cytek Biosciences, Inc. | 1 Chemicals | Registered | 2020 |
| SPECTROFLO 1855777 · TMA1080816 | Cytek Biosciences, Inc. | 9 Electronics | Registered | 2020 |
| SPECTRALUX 1811999 · TMA999477 | HGCI, Inc. | 11 Lighting | Registered | 2018 |
| SPECTRAL 1716761 · TMA961608 | Canyon Bicycles GmbH | 6 Metal12 Vehicles19 Building | Registered | 2017 |
| SPECTRAL 1556893 · TMA844098 | Godfrey Hirst Australia Pty Ltd. | 23 Yarns | Registered | 2013 |
| SPECTRAL 1479860 · TMA803247 | Harkness Screens International Limited | 9 Electronics | Registered | 2011 |
| SPECTRAL 0764644 · TMA477810 · design | SPECTRAL MEDICAL INC. | 1 Chemicals10 Medical42 Science | Registered | 1997 |
| SPECTRAL 0764643 · TMA477809 | SPECTRAL MEDICAL INC. | 1 Chemicals10 Medical42 Science | Registered | 1997 |
| SPECTRAL 2331917 | an individual | 3 Cosmetics9 Electronics25 Clothing+2 | Pending | 2024 |
| SPECTRAFLORA 1386236 · TMA820266 | HGCI, Inc. | 1 Chemicals | Registered | 2012 |
| SPECTRAWELD 1478628 · TMA791253 | Masonite International Corporation | 19 Building | Registered | 2011 |
| SPECTRANGLE 0734232 · TMA433181 | an individual | 28 Toys | Registered | 1994 |
| SPECTRALFX 2239740 · TMA1268513 | Owner not listed | 9 Electronics | Registered | 2024 |
| SPECTRA 2180703 · TMA1212514 | LENCORE ACOUSTICS LLC | 9 Electronics | Registered | 2023 |
| SPECTRA 2014110 · TMA1167633 | Linde GmbH | 1 Chemicals | Registered | 2023 |
| SPECTRA 1986173 · TMA1250572 | AS America, Inc. | 11 Lighting | Registered | 2024 |
| SPECTRACEF 1983107 · TMA1160891 | Meiji Seika Pharma Co. Ltd. | 5 Pharmaceuticals | Registered | 2023 |
| SPECTACLE 1945643 · TMA1110962 | KOHLER CO. | 11 Lighting | Registered | 2021 |
| SPECTRACOM 1941138 · TMA1195053 | an individual | 9 Electronics14 Jewellery35 Advertising | Registered | 2023 |
| SPECTRA 1842339 · TMA1023568 · design | Uzinmedicare Co. Ltd. | 5 Pharmaceuticals10 Medical21 Housewares | Registered | 2019 |
| SPECTRILA 1782793 · TMA1032562 | Owner not shown | 5 Pharmaceuticals | Registered | 2019 |
| SPECTRALOG 1782521 · TMA1009212 | Spectralog Inc. | 9 Electronics41 Education | Registered | 2018 |