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Inventor

Yan Hui Zha

Inventor
Shanghai, CN

Overview

6→
Patents
2009–2021
Patent span
LOC
Primary field

Patents· 6 as inventor

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

LOC14primary
LOC1471%
E21BEarth or rock drilling14%
G06FElectric digital data processing14%
PatentTitleYear
10,907,464Automatic controlling of drilling weight on bit2021D0669470'Electronic reader device'2012D0627332'Media player'2010D0617314'Loudspeaker'2010D0596618'Loudspeaker'2009D0584316'Media player'2009

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2009–2012Patents assigned to CREATIVE TECH LTD (5)· patent assignee history
2009–2012Based in Shanghai, CN· patent location history
2012Patents assigned to LEUNG WEI LIT WILFRED (1)· patent assignee history
2012Patents assigned to ZHA YAN HUI (1)· patent assignee history
2021Patents assigned to CONOCOPHILLIPS CO (1)· patent assignee history
2021Based in Houston, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CREATIVE TECH LTD52009–2012
CONOCOPHILLIPS CO12021
LEUNG WEI LIT WILFRED12012
ZHA YAN HUIself12012
Locations
LocationPatentsSpan
Shanghai, CN52009–2012
Houston, Texas, US12021