Inventor · disambiguated record
Chi Yin Alan Leung
Also filed as: LEUNG CHI K · LEUNG CHI YIN · LEUNG CHI YIN ALAN
57 granted patents·15 pending applications·449 citations·filing 2004–2025
98Inventor score
Files withPOLYGROUP MACAU LTD BVI39BELGRAVIA WOOD LTD19LEUNG CHI YIN ALAN4NANO & ADVANCED MATERIALS INST LTD4CHENG CHUNG WAI PAUL2
Top patents by PatentIndex Score
72 records- 0198US9119495B2Powered tree constructionPOLYGROUP MACAU LTD BVI·Filed 2015·Granted Sep 1, 2015·44 cites·30 claims
- 0298US8959810B1Powered tree constructionPOLYGROUP MACAU LTD BVI·Filed 2014·Granted Feb 24, 2015·54 cites·28 claims
- 0398US8863416B2Powered tree constructionPOLYGROUP MACAU LTD BVI·Filed 2012·Granted Oct 21, 2014·70 cites·10 claims
- 0497US11019692B2Variable multi-color LED light string and controller for an artificial treePOLYGROUP MACAU LTD BVI·Filed 2020·Granted May 25, 2021·7 cites·30 claims
- 0596US9912109B2Powered tree constructionPOLYGROUP MACAU LTD BVI·Filed 2016·Granted Mar 6, 2018·14 cites·20 claims
- 0696US9907136B2Variable multi-color LED light string and controller for an artificial treePOLYGROUP MACAU LTD BVI·Filed 2017·Granted Feb 27, 2018·17 cites·18 claims
- 0795US11967790B2Powered tree construction with rotation limitingPOLYGROUP MACAU LTD BVI·Filed 2021·Granted Apr 23, 2024·2 cites·17 claims
- 0895US11799251B2Powered tree construction with rotation limitingPOLYGROUP MACAU LTD BVI·Filed 2021·Granted Oct 24, 2023·2 cites·8 claims
- 0995US11460179B2Variable multi-color LED light string and controller for an artificial treePOLYGROUP MACAU LTD BVI·Filed 2021·Granted Oct 4, 2022·3 cites·30 claims
- 1095US10440795B2Variable multi-color LED light string and controller for an artificial treePOLYGROUP MACAU LTD BVI·Filed 2018·Granted Oct 8, 2019·9 cites·7 claims
- 1195US9839315B2Multi-wire quick assemble treePOLYGROUP MACAU LTD (BVI)·Filed 2016·Granted Dec 12, 2017·14 cites·12 claims
- 1294US10728978B2Variable multi-color LED light string and controller for an artificial treePOLYGROUP MACAU LTD BVI·Filed 2019·Granted Jul 28, 2020·6 cites·26 claims
- 1392US10533738B2Systems and methods for water-resistant lamp holdersPOLYGROUP MACAU LTD BVI·Filed 2017·Granted Jan 14, 2020·16 cites·11 claims
- 1492US9161647B2Stand with insertsPOLYGROUP MACAU LTD BVI·Filed 2014·Granted Oct 20, 2015·12 cites·19 claims
- 1592US8753135B2Light string systemPOLYGROUP MACAU LTD BVI·Filed 2013·Granted Jun 17, 2014·23 cites·19 claims
- 1692US8235737B2Light string systemCHENG CHUNG WAI PAUL·Filed 2010·Granted Aug 7, 2012·33 cites·18 claims
- 1791US2025343382A1Powered Tree Construction With Rotation LimitingPOLYGROUP MACAU LTD BVI·Filed 2025·Application pending·0 cites
- 1890US11686460B2Durable coated and wired diode apparatusBELGRAVIA WOOD LTD·Filed 2020·Granted Jun 27, 2023·3 cites·16 claims
- 1990US8419455B2Light string systemCHENG CHUNG WAI PAUL·Filed 2012·Granted Apr 16, 2013·22 cites·20 claims
- 2089US12111028B2Systems and methods for water resistant decorative light stringsBELGRAVIA WOOD LTD·Filed 2020·Granted Oct 8, 2024·2 cites·21 claims
- 2188US12111042B2Variable multi-color LED light string and controller for an artificial treePOLYGROUP MACAU LTD BVI·Filed 2022·Granted Oct 8, 2024·1 cites·18 claims
- 2288US9843147B2Powered tree constructionPOLYGROUP MACAU LTD (BVI)·Filed 2013·Granted Dec 12, 2017·6 cites·15 claims
- 2388US8899251B2Pool canopy systemLEUNG CHI YIN ALAN·Filed 2011·Granted Dec 2, 2014·27 cites·14 claims
- 2487US12362523B2Powered tree construction with rotation limitingPOLYGROUP MACAU LTD BVI·Filed 2024·Granted Jul 15, 2025·0 cites·16 claims
- 2587US10985513B2Powered tree construction with rotation limitingPOLYGROUP MACAU LTD BVI·Filed 2019·Granted Apr 20, 2021·3 cites·19 claims
- 2687US8640275B2Cleaning systems and methods for cleaning containers having non-vertical sidewallsLAWSON GARY LEE·Filed 2010·Granted Feb 4, 2014·17 cites·17 claims
- 2787US2024391795A1Buoyancy cleaning device for aboveground poolBELGRAVIA WOOD LTD·Filed 2024·Application pending·0 cites
- 2887US2024391796A1Buoyancy cleaning device for aboveground poolBELGRAVIA WOOD LTD·Filed 2024·Application pending·0 cites
- 2983US12114783B2Air bed having an improved built-in air pumpBELGRAVIA WOOD LTD·Filed 2020·Granted Oct 15, 2024·2 cites·27 claims
- 3083US11856953B2Launderable bactericidal and virucidal fabric finishNANO & ADVANCED MATERIALS INST LTD·Filed 2022·Granted Jan 2, 2024·1 cites·14 claims
- 3183US11095078B2Powered tree construction with rotation limitingPOLYGROUP MACAU LTD BVI·Filed 2019·Granted Aug 17, 2021·2 cites·19 claims
- 3283US10842306B2Multi-wire quick assemble treePOLYGROUP MACAU LTD BVI·Filed 2017·Granted Nov 24, 2020·3 cites·12 claims
- 3382US10101013B2Seasonal light strings and method of assembling seasonal light strings employing capacitor shuntsPOLYGROUP MACAU LTD BVI·Filed 2015·Granted Oct 16, 2018·3 cites·9 claims
- 3480US12492809B2LED light string with transparent and opaque coatingsBELGRAVIA WOOD LTD·Filed 2023·Granted Dec 9, 2025·0 cites·15 claims
- 3580US9867490B2Stand with insertsPOLYGROUP MACAU LTD (BVI)·Filed 2015·Granted Jan 16, 2018·2 cites·20 claims
- 3679US10213042B2Tree standPOLYGROUP MACAU LTD BVI·Filed 2016·Granted Feb 26, 2019·2 cites·17 claims
- 3779US2025297629A1Connector systems and methods theretoBELGRAVIA WOOD LTD·Filed 2025·Application pending·0 cites
- 3877US2024426469A1Variable multi-color led light string and controller for an artificial treeBELGRAVIA WOOD LTD·Filed 2024·Application pending·0 cites
- 3977US2023225538A1Multi-wire quick assemble treePOLYGROUP MACAU LTD BVI·Filed 2023·Application pending·0 cites
- 4076US8430205B2Pool ladder safety systemLEUNG CHI YIN ALAN·Filed 2010·Granted Apr 30, 2013·5 cites·16 claims
- 4176US2025012431A1System and method for controlling decorative lightingBELGRAVIA WOOD LTD·Filed 2024·Application pending·0 cites
- 4275US10522954B1Powered tree constructionPOLYGROUP MACAU LTD BVI·Filed 2019·Granted Dec 31, 2019·1 cites·30 claims
- 4375US10404019B2Powered tree constructionPOLYGROUP MACAU LTD BVI·Filed 2018·Granted Sep 3, 2019·1 cites·30 claims
- 4475US9071053B2Electrical safety system with timerPOLYGROUP MACAU LTD BVI·Filed 2014·Granted Jun 30, 2015·3 cites·19 claims
- 4574US2025031863A1Air bed having an improved built-in air pumpBELGRAVIA WOOD LTD·Filed 2024·Application pending·0 cites
- 4673US10777949B2Powered tree constructionPOLYGROUP MACAU LTD BVI·Filed 2018·Granted Sep 15, 2020·1 cites·17 claims
- 4772US2024186759A1Electrical and mechanical coupling systems for artificial powered trees and associated methodsBELGRAVIA WOOD LTD·Filed 2024·Application pending·0 cites
- 4871US12129995B2Systems and methods for controlling decorative lightingPOLYGROUP MACAU LTD BVI·Filed 2022·Granted Oct 29, 2024·0 cites·25 claims
- 4971US11602237B2Multi-wire quick assemble treePOLYGROUP MACAU LTD BVI·Filed 2020·Granted Mar 14, 2023·0 cites·19 claims
- 5071US2022289592A1Buoyancy cleaning device for aboveground poolBELGRAVIA WOOD LTD·Filed 2020·Application pending·0 cites
Showing the top 50 of 72 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Chi Yin Alan Leung files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →