H04W 4/33
For indoor environments
Official title: for indoor environments, e.g. buildings
H04W4/33 (For indoor environments) appears on 2,974 US grants and 3,524 published applications in this corpus.
Search patents in H04W- Granted patents
- 2,974
- Published applications
- 3,524
- Assignees
- 1,095
- Inventors
- 5,855
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 3 | 4 |
| 2003 | 1 | 3 |
| 2004 | 3 | 5 |
| 2005 | 4 | 7 |
| 2006 | 4 | 7 |
| 2007 | 7 | 15 |
| 2008 | 3 | 21 |
| 2009 | 9 | 18 |
| 2010 | 6 | 17 |
| 2011 | 11 | 24 |
| 2012 | 14 | 46 |
| 2013 | 36 | 87 |
| 2014 | 55 | 134 |
| 2015 | 98 | 205 |
| 2016 | 153 | 299 |
| 2017 | 201 | 279 |
| 2018 | 314 | 332 |
| 2019 | 372 | 353 |
| 2020 | 364 | 438 |
| 2021 | 295 | 360 |
| 2022 | 287 | 284 |
| 2023 | 244 | 205 |
| 2024 | 199 | 176 |
| 2025 | 193 | 137 |
| 2026 | 97 | 66 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ultra-wideband location systems and methods6 Oct 2026US 12,756,996 B2Be Spoon
- In-building localization using device radio frequency fingerprints29 Sep 2026US 12,750,813 B1Amazon Technologies, Inc.
- Sensor enabled location awareness system22 Sep 2026US 12,743,592 B2United States Postal Service
- Method for tracking and updating the location of a movable electronic device22 Sep 2026US 12,744,110 B2Imprivata, Inc.
- System and method for hospitality presence detection and reporting of same in electronic communications22 Sep 2026US 12,745,060 B2Mitel Networks Corporation
- Method for Creating A Model for Positioning, and A Method for Positioning8 Oct 2026US 2026/0313328 A1Combain Mobile AB
- System and method for adaptive navigation in a facility1 Oct 2026US 2026/0298647 A1
- Communication apparatus, control method, and storage medium1 Oct 2026US 2026/0304075 A1Canon Kabushiki Kaisha
- Human-centric smart building systems and methods1 Oct 2026US 2026/0304076 A1C Squared IP Holdings LLC
- Systems, devices, and methods for establishing wireless communication links24 Sep 2026US 2026/0292899 A1Stryker Corporation
Most cited
By later US patents
- Device location based on machine learning classifications515US 9,980,100 B1Snap Inc. · 2018
- Systems and methods for calibration based indoor geolocation398US 9,439,041 B2Lighthouse Signal Systems LLC · 2016
- Method and system for location-triggered rewards368US 8,489,112 B2shopkick, Inc. · 2013
- System and method for proactive content delivery by situation location363US 6,456,234 B12002
- Bed/room/patient association systems and methods297US 9,830,424 B2Hill-Rom Services, Inc. · 2017