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Inventor

Sai Kei Wong

Inventor
Sai Ying Pun, HK

Overview

4→
Patents
2007–2012
Patent span
Human necessities
Primary field (CPC A)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A47Bprimary
A47BTables75%
A47LDomestic washing or cleaning25%
PatentTitleYear
8,313,139'Portable table assemblies'20127,980,627'Portable table assemblies'20117,681,946'Portable table assemblies'20107,293,324'Vacuum cleaner with level control'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007Patents assigned to TECHTRONIC IND CO LTD (1)· patent assignee history
2007Based in Hong Kong, CN· patent location history
2010–2012Patents assigned to SWIMWAYS CORP (3)· patent assignee history
2010–2012Based in Sai Ying Pun, HK· patent location history
2012Patents assigned to ARIAS DAVID A (1)· patent assignee history
2012Patents assigned to LEE CHAK POR (1)· patent assignee history
2012Patents assigned to O'DOHERTY KEVIN (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SWIMWAYS CORP32010–2012
ARIAS DAVID A12012
LEE CHAK POR12012
O'DOHERTY KEVIN12012
TECHTRONIC IND CO LTD12007
Locations
LocationPatentsSpan
Sai Ying Pun, HK32010–2012
Hong Kong, CN12007