Dew Engineering and Development ULC
Records under this name other than patents Dew Engineering and Development ULC holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
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| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,981,704 | Track changing apparatus and methods associated therewith Lapsed on the fee record Ended May 29, 2026 · From the USPTO record | Lapsed on the fee record | Ended May 29, 2026 | From the USPTO record |
| US 10,683,044 | Track changing apparatus and methods associated therewith Lapsed on the fee record Ended Jun 16, 2024 · From the USPTO record | Lapsed on the fee record | Ended Jun 16, 2024 | From the USPTO record |
| US 6,333,989 | Contact imaging device Term ended Term ended Mar 29, 2019 · From the USPTO record | Term ended | Term ended Mar 29, 2019 | From the USPTO record |
| US RE38,148 | Prodder with force feedback Term ended Term ended Oct 14, 2018 · From the USPTO record | Term ended | Term ended Oct 14, 2018 | From the USPTO record |
| US 6,160,903 | Method of providing secure user access Term ended Term ended Apr 24, 2018 · From the USPTO record | Term ended | Term ended Apr 24, 2018 | From the USPTO record |
| US 6,259,805 | Biometric security encryption system Term ended Term ended Mar 23, 2018 · From the USPTO record | Term ended | Term ended Mar 23, 2018 | From the USPTO record |
| US 6,215,874 | Random number generator and method for same Term ended Term ended Feb 13, 2018 · From the USPTO record | Term ended | Term ended Feb 13, 2018 | From the USPTO record |
| US 6,052,468 | Method of securing a cryptographic key Term ended Term ended Jan 15, 2018 · From the USPTO record | Term ended | Term ended Jan 15, 2018 | From the USPTO record |
| US 7,603,734 | System and method for detecting rack fault condition of passenger boarding bridge lift columns Formerly held Lapsed on the fee record Ended Oct 20, 2017 · From the USPTO record | Lapsed on the fee record | Ended Oct 20, 2017 | From the USPTO record |
| US 6,084,977 | Method of protecting a computer system from record-playback breaches of security Term ended Term ended Sep 26, 2017 · From the USPTO record | Term ended | Term ended Sep 26, 2017 | From the USPTO record |