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Inventor

Carl F. Boehm, Jr.

Inventor
Houston, TX, US

Overview

9→
Patents
1987–2016
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 9 as inventor

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

E21Bprimary
E21BEarth or rock drilling75%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
F16JPistons8%
PatentTitleYear
9,376,881'High-capacity single-trip lockdown bushing and a method to operate the same'20168,695,700'Seal with enhanced nose ring'20145,464,063'Well assembly metal seal'19955,456,314'Wellhead annulus seal'19955,285,853'Casing hanger seal with test port'19945,067,734'Metal seal with grooved inlays'19914,932,472'Packoff with flexible section for casing hanger'19904,751,968'Wellhead stabilizing member with deflecting ribs'19884,665,979'Metal casing hanger seal with expansion slots'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1988Patents assigned to HUGHES TOOL CO (2)· patent assignee history
1987–2016Based in Houston, TX, US· patent location history
1990–2016Patents assigned to VETCO GRAY INC (3)· patent assignee history
1991–1995Patents assigned to VETCO GRAY INC ABB (4)· patent assignee history
2016Patents assigned to BARNHART DANIEL RALPH (1)· patent assignee history
2016Patents assigned to BOEHM CARL F (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
VETCO GRAY INC ABB41991–1995
VETCO GRAY INC31990–2016
HUGHES TOOL CO21987–1988
BARNHART DANIEL RALPH12016
BOEHM CARL Fself12016
Locations
LocationPatentsSpan
Houston, Texas, US91987–2016