LexDanaLexDanabeta
Inventor

Bob C. Hopkins

Inventor
Houston, TX, US

Overview

5→
Patents
1985–1996
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 5 as inventor

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

E21Bprimary
E21BEarth or rock drilling50%
Y10TTechnical subjects covered by former us classification25%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges13%
F16KValves13%
PatentTitleYear
5,560,258'Release mechanism for use with a remote tool'19964,900,041'Subsea well casing hanger packoff system'19904,836,579'Subsea casing hanger suspension system'19894,595,063'Subsea casing hanger suspension system'19864,510,960'Valve stem-to-bonnet backseat'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1996Patents assigned to FMC CORP (5)· patent assignee history
1985–1996Based in Houston, TX, US· patent location history
1989–1990Based in Nassau Bay, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FMC CORP51985–1996
Locations
LocationPatentsSpan
Houston, Texas, US31985–1996
Nassau Bay, Texas, US21989–1990