LexDanaLexDanabeta
Inventor

Chau Hoang

Inventor
Houston, TX, US

Overview

4→
Patents
2002–2018
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 4 as inventor

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

E21Bprimary
E21BEarth or rock drilling60%
F16KValves40%
PatentTitleYear
9,890,598'Anti-rotation wedge'20188,870,186'Seal assembly for a casing hanger'20148,672,290'Self aligning spherical backseat assembly for a valve'20146,454,015'Shearing gate valve'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002–2018Based in Houston, TX, US· patent location history
2014–2018Patents assigned to VETCO GRAY INC (3)· patent assignee history
2014Patents assigned to HOANG CHAU (2)· patent assignee history
2014Patents assigned to COMEAUX DAVID DANIEL (1)· patent assignee history
2014Patents assigned to DUONG KHANH ANH (1)· patent assignee history
2014Patents assigned to GRIFFIN CLAYTON (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
VETCO GRAY INC32014–2018
HOANG CHAUself22014
COMEAUX DAVID DANIEL12014
DUONG KHANH ANH12014
GRIFFIN CLAYTON12014
Locations
LocationPatentsSpan
Houston, Texas, US42002–2018