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Inventor

Stephen W. Mitchell

Inventor
Windham, NH, US

Overview

13→
Patents
1978–2020
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 13 as inventor

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

F01Lprimary
F01LCyclically operating valves for machines or engines19%
Y10TTechnical subjects covered by former us classification16%
A62CFire-fighting11%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges11%
F16LPipes11%
F02BInternal-combustion piston engines5%
F16HGearing5%
B63BShips or other waterborne vessels3%
B63CLaunching, hauling-out, or dry-docking of vessels3%
B63GOffensive or defensive arrangements on vessels3%
PatentTitleYear
10,792,526Adjustable bracket and hub for flexible hose support202010,744,357Adjustable bracket and hub for flexible hose support202010,500,427Adjustable bracket and hub for flexible hose support20199,889,327'Adjustable bracket and hub for flexible hose support'20188,534,959'Method and apparatus for deployment of ocean bottom seismometers'20137,104,229'Variable valve timing system'20065,787,849'Valve timing phase changer'19985,417,611'Driving connections between two rotatable bodies'19954,872,428'Improvements in or relating to driving connections between two rotatable bodies'19894,572,025'Balancing system'1986RE031917'Valve timing mechanisms'19854,505,235'Valve timing mechanisms of internal combustion engines'19854,131,096'Valve timing mechanisms'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2013Patents assigned to MITCHELL STEPHEN W (2)· patent assignee history
1978–1998Based in Lancashire, GB· patent location history
1985–1989Patents assigned to NAT RES DEV (3)· patent assignee history
1985–2006Based in Bury, GB· patent location history
1986Based in Greater Manchester, GB· patent location history
2013Patents assigned to BOONE WILLIAM E (1)· patent assignee history
2013Based in Katy, TX, US· patent location history
2018–2020Based in Windham, NH, US· patent location history
2019–2020Patents assigned to ANVIL INT LLC (2)· patent assignee history
2020Patents assigned to ANVIL INTERNATIONAL LLC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NAT RES DEV31985–1989
ANVIL INT LLC22019–2020
MITCHELL STEPHEN Wself21978–2013
ANVIL INTERNATIONAL LLC12020
BOONE WILLIAM E12013
Locations
LocationPatentsSpan
Windham, NH, US42018–2020
Bury, GB41985–2006
Lancashire, GB31978–1998
Katy, Texas, US12013
Greater Manchester, GB11986