Electric tiltrotor aircraft
US-12534197-B2 · Jan 27, 2026 · US
This page is not indexed by search engines while we improve data quality.
Groninga Kirk L patents
Groninga Kirk L is listed as an inventor on 56 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Groninga Kirk L |
| Total patents | 56 |
| First publication | Feb 15, 2018 |
| Latest publication | Jan 27, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Tilting hexrotor aircraft
US-12528579-B2 · Jan 20, 2026 · US
VTOL aircraft with tilting rotors and tilting ducted fans
US-12466553-B2 · Nov 11, 2025 · US
Tilting Hexrotor Aircraft
US-2025263167-A1 · Aug 21, 2025 · US
Tilting hexrotor aircraft
US-2025187729-A1 · Jun 12, 2025 · US
Electric tiltrotor aircraft
US-2025171139-A1 · May 29, 2025 · US
Vtol aircraft with tilting rotors and tilting ducted fans
US-2025171138-A1 · May 29, 2025 · US
Thrust vectoring pylon arrangement and method therefor
US-2025083793-A1 · Mar 13, 2025 · US
Thrust vectoring pylon arrangement and method therefor
US-12246819-B1 · Mar 11, 2025 · US
VTOL aircraft with tilting rotors and tilting ducted fans
US-12246827-B1 · Mar 11, 2025 · US
Recent patents
Latest publications not already listed above.
Electric tiltrotor aircraft
US-12240600-B2 · Mar 4, 2025 · US
Tilting hexrotor aircraft
US-12168508-B2 · Dec 17, 2024 · US
Dual motor input with overrunning clutch
US-11970283-B2 · Apr 30, 2024 · US
VTOL aircraft with tilting rotors and tilting ducted fans
US-11873085-B2 · Jan 16, 2024 · US
Tilting hexrotor aircraft
US-11807357-B2 · Nov 7, 2023 · US
Electric tiltrotor aircraft
US-2023348054-A1 · Nov 2, 2023 · US
Electric tiltrotor aircraft
US-11718397-B2 · Aug 8, 2023 · US
Dual motor input with overrunning clutch
US-2023202668-A1 · Jun 29, 2023 · US
Dual motor input with overrunning clutch
US-11613375-B2 · Mar 28, 2023 · US
Electric aircraft side access batteries and single file passenger seating
US-11542020-B2 · Jan 3, 2023 · US
Electric tiltrotor aircraft
US-2022371727-A1 · Nov 24, 2022 · US
Tilting hexrotor aircraft
US-2022324558-A1 · Oct 13, 2022 · US
Tilting hexrotor aircraft
US-2022306293-A1 · Sep 29, 2022 · US
Tilting hexrotor aircraft
US-2022306292-A1 · Sep 29, 2022 · US
Electric Aircraft Side Access Batteries and Single File Passenger Seating
US-2022242584-A1 · Aug 4, 2022 · US
Method and Apparatus for Reducing Download and Drag of VTOL Electric Vehicle
US-2022234728-A1 · Jul 28, 2022 · US
Ducted rotor blade tip extension
US-11286036-B2 · Mar 29, 2022 · US
Ducted rotor blade tip extension
US-11286037-B2 · Mar 29, 2022 · US
Vtol aircraft with tilting rotors and tilting ducted fans
US-2021331793-A1 · Oct 28, 2021 · US
Counter-rotating tail rotor
US-11117655-B2 · Sep 14, 2021 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Bell Textron Inc | 23 |
| Textron Innovations Inc | 22 |
| Bell Helicopter Textron Inc | 21 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| B64C29/0033 | 44 |
| B64D27/24 | 25 |
| B64C39/04 | 19 |
| B64D27/34 | 14 |
| Y02T50/60 | 14 |