Selecting propellers for performance and noise shaping
US-2021309346-A1 · Oct 7, 2021 · US
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Ko Allan patents
Ko Allan is listed as an inventor on 31 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Ko Allan |
| Total patents | 31 |
| First publication | Mar 14, 2017 |
| Latest publication | Oct 7, 2021 |
Notable patents
Publications ranked by popularity score, then publication date.
Propeller blade treatments for sound control
US-10933988-B2 · Mar 2, 2021 · US
Geometrically reconfigurable propellers
US-10822077-B1 · Nov 3, 2020 · US
Propeller blade indentations for improved aerodynamic performance and sound control
US-10399665-B2 · Sep 3, 2019 · US
Propeller blade treatments for sound control
US-2019210720-A1 · Jul 11, 2019 · US
Selecting propellers for performance and noise shaping
US-2019185139-A1 · Jun 20, 2019 · US
Propeller blade trailing edge fringes for improved sound control
US-10259562-B2 · Apr 16, 2019 · US
Propeller surface area treatments for sound dampening
US-10259574-B2 · Apr 16, 2019 · US
Selecting propellers for performance and noise shaping
US-10232931-B2 · Mar 19, 2019 · US
Operating aerial vehicles with intentionally imbalanced propellers
US-10214279-B2 · Feb 26, 2019 · US
Recent patents
Latest publications not already listed above.
Reconfiguring propellers during aerial vehicle operation
US-10179646-B1 · Jan 15, 2019 · US
Propeller blade indentations for improved aerodynamic performance and sound control
US-2018304990-A1 · Oct 25, 2018 · US
Propeller blade leading edge serrations for improved sound control
US-10099773-B2 · Oct 16, 2018 · US
Aerial vehicle delivery shroud
US-10086951-B1 · Oct 2, 2018 · US
Systems and methods for simulating ground effect
US-10053208-B1 · Aug 21, 2018 · US
Operating aerial vehicles with intentionally imbalanced propellers
US-2018186444-A1 · Jul 5, 2018 · US
Propeller blade indentations for improved aerodynamic performance and sound control
US-10011346-B2 · Jul 3, 2018 · US
Intentionally imbalancing propellers for performance and noise-shaping
US-9902490-B2 · Feb 27, 2018 · US
Intentionally imbalancing propellers for performance and noise-shaping
US-2017334546-A1 · Nov 23, 2017 · US
Selecting propellers for performance and noise shaping
US-9745050-B2 · Aug 29, 2017 · US
Aerial vehicle delivery shroud
US-9731839-B1 · Aug 15, 2017 · US
Propeller surface area treatments for sound dampening
US-2017174338-A1 · Jun 22, 2017 · US
Selecting propellers for performance and noise shaping
US-2017174317-A1 · Jun 22, 2017 · US
Propeller treatments for sound dampening
US-2017174321-A1 · Jun 22, 2017 · US
Selecting propellers for performance and noise shaping
US-2017174316-A1 · Jun 22, 2017 · US
Propeller blade indentations for improved aerodynamic performance and sound control
US-2017174318-A1 · Jun 22, 2017 · US
Propeller blade leading edge serrations for improved sound control
US-2017174319-A1 · Jun 22, 2017 · US
Propeller blade protrusions for improved aerodynamic performance and sound control
US-2017175531-A1 · Jun 22, 2017 · US
Propeller blade trailing edge fringes for improved sound control
US-2017174320-A1 · Jun 22, 2017 · US
Simulated ground effect for aerial vehicles
US-9643718-B1 · May 9, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Amazon Tech Inc | 31 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| B64U10/14 | 25 |
| B64C39/024 | 24 |
| B64C2201/108 | 23 |
| B64C2201/128 | 22 |
| B64U20/20 | 22 |