Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11860268 | Systems and methods using multiple modalities for occupancy sensing | ABHISHEK MURTHY, Rohit Kumar, Yuting Zhang, Chingiz Kabytayev | 2024-01-02 |
| 11249632 | Presence, access, and seen state for local copies of shared content items | Erika Ji, Matt Hiller, Matt Kim, Peter Hua, Matthew Spitz +1 more | 2022-02-15 |
| 10481781 | Presence, access, and seen state for local copies of shared content items | Erika Ji, Matt Hiller, Matt Kim, Peter Hua, Matthew Spitz +1 more | 2019-11-19 |
| 10376063 | Integrated lumbar and head tilt assembly | Robert Dean Donovan, Nikki White, Nick Yang, Derek Sun | 2019-08-13 |
| 10274916 | System for optimising workflow for efficient on-site data collection and determination of energy analysis and method of operation thereof | Saeed Bagheri, SIRISHA RANGAVAJHALA, Ermin Wei | 2019-04-30 |
| 9733336 | System for local error compensation in electromagnetic tracking systems | Jochen Kruecker | 2017-08-15 |
| 6870324 | Method for color mixing with arc stability and straightening of HID lamps operated at high frequencies using duty cycle modulation | — | 2005-03-22 |
| 6670779 | High power factor electronic ballast with lossless switching | — | 2003-12-30 |
| 6642706 | Detection of asymmetrical load in an AC circuit | — | 2003-11-04 |
| 6577078 | Electronic ballast with lamp run-up current regulation | — | 2003-06-10 |
| 6573664 | High efficiency high power factor electronic ballast | — | 2003-06-03 |
| 6534933 | High power factor electronic ballast with load dependent bus voltage regulation | — | 2003-03-18 |
| 6504313 | Ignition scheme for electronic HID ballast | — | 2003-01-07 |
| 6498441 | Method for coloring mixing of hid lamps operated at VHF frequencies using duty cycle modulation | — | 2002-12-24 |
| 6278245 | Buck-boost function type electronic ballast with bus capacitor current sensing | Faye Li | 2001-08-21 |
| 6271633 | High power factor electronic ballast with fully differential circuit topology | Gert W. Bruning | 2001-08-07 |
| 6225755 | High power factor electronic ballast with simplified circuit topology | — | 2001-05-01 |
| 5917290 | Parallel-storage series-drive electronic ballast | Martin F. Schlecht | 1999-06-29 |
| 5789871 | Series-capacitor electronic ballast | Martin F. Schlecht | 1998-08-04 |