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For the Inventor, By the Inventor

Hong Kong, China

Heavy Gain Limited


USPTO Granted Patents = 2

% Expired Patents = 50.0


Forward Citations = 7

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1 inventor (with patents filed for the assignee):

goldMedal Wing-kin Hui (2 out of 30 patents)

silverMedal Wing Kin Hui (1 patent)


2 patents:

1. 8252155 - Electrolytic cell for generating chlorine in a pool (2012-08-28),
2. 8225446 - Pool cleaning vehicle with endless loop track (2012-07-24),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#1,192 in Hong Kong

#11,498 in China

Hong Kong, CN
Hong Kong, China

Heavy Gain Limited

Forward Citations = 7

1 inventor:

goldMedal Wing-kin Hui (2 out of 30 patents)

silverMedal Wing Kin Hui (1 patent)

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