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Inventor

Wade Jonathon Helfer

Inventor
Ames, IA, US

Overview

14→
Patents
2005–2021
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 14 as inventor

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

F16Kprimary
F16KValves67%
Y10TTechnical subjects covered by former us classification24%
F16JPistons5%
Y02PClimate change mitigation technologies in the production or processing of goods5%
PatentTitleYear
10,969,030Bushing having a shaft seal202110,914,387Rotary control valve having a clamped valve seat202110,844,962Valve body insert apparatus and related methods20209,587,747'Flexible seals for process control valves'20179,568,110'Valve seals'20179,127,775'Flexible seals for process control valves'20158,814,138'Valve seals'20148,727,310'Packing followers for use with valves'20148,408,837'Collets for use with valves'20138,286,938'Flexible seals for process control valves'20128,096,526'Rotary actuator lever apparatus having an annular recess'20128,011,386'Control valve having “C” seal'20117,681,594'Control valve having “C” seal'20106,851,658'Control valve trim and bore seal'2005

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005–2015Patents assigned to FISHER CONTROLS INT (9)· patent assignee history
2005–2021Based in Ames, IA, US· patent location history
2012–2015Patents assigned to HELFER WADE JONATHON (5)· patent assignee history
2012–2015Patents assigned to GOOD BENJAMIN URIAH (2)· patent assignee history
2012–2015Patents assigned to KOESTER DAVID JOHN (2)· patent assignee history
2017–2021Patents assigned to FISHER CONTROLS INT LLC (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FISHER CONTROLS INT92005–2015
FISHER CONTROLS INT LLC52017–2021
HELFER WADE JONATHONself52012–2015
GOOD BENJAMIN URIAH22012–2015
KOESTER DAVID JOHN22012–2015
Locations
LocationPatentsSpan
Ames, IA, US142005–2021