Inventor
Koohyun Um
Inventor
Sunnyvale, CA, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Wprimary
H04WWireless communication networks29%
H04BTransmission21%
H01QAntennas, i.e. radio aerials17%
G01SRadio direction-finding8%
G06NComputing arrangements based on specific computational models8%
G08BSignalling systems, e.g. personal calling systems8%
H04LTransmission of digital information, e.g. telegraphic communication4%
H04MTelephonic communication4%
PatentTitleYear
10,771,939Orientation of directional antennas using horizontal position information202010,674,331Indoor location estimation for wireless device202010,310,079Presence detection using wireless signals confirmed with ultrasound and/or audio201910,305,766Coexistence-insensitive presence detection201910,149,115Orientation of directional antennas using horizontal position information20189,698,857'Pattern diversity assisted single-input-single-output and two-by-two multiple-input-multiple output (MIMO) antenna systems'20179,590,298'Orientation of directional antennas'2017Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2017–2020Patents assigned to AMAZON TECH INC (7)· patent assignee history
2017–2020Based in Sunnyvale, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AMAZON TECH INC | 7 | 2017–2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sunnyvale, California, US | 7 | 2017–2020 |