LexDanaLexDanabeta
Inventor

Zachary William Stewart

Inventor
Houston, TX, US

Overview

2→
Patents
2016–2017
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 2 as inventor

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

E21Bprimary
E21BEarth or rock drilling67%
F16KValves33%
PatentTitleYear
9,828,824Hydraulic re-configurable and subsea repairable control system for deepwater blow-out preventers20179,528,340'Solenoid valve housings for blowout preventer'2016

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2016–2017Patents assigned to HYDRIL USA DISTRIB LLC (2)· patent assignee history
2016Patents assigned to HYDRILL USA DISTRIB LLC (1)· patent assignee history
2016–2017Based in Houston, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HYDRIL USA DISTRIB LLC22016–2017
HYDRILL USA DISTRIB LLC12016
Locations
LocationPatentsSpan
Houston, Texas, US22016–2017