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Inventor

Robert Crispin Porter

Inventor
Cypress, TX, US

Overview

5→
Patents
1990–2015
Patent span
Physics
Primary field (CPC G)

Patents· 5 as inventor

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

G01Vprimary
G01VGeophysics36%
E21BEarth or rock drilling27%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
F16KValves9%
Y10TTechnical subjects covered by former us classification9%
PatentTitleYear
9,010,427'Smart Drop-off tool and hang-off tool for a logging string'20158,844,618'Smart drop-off tool and hang-off tool for a logging string'20148,607,876'Flapper valve'20135,044,460'Downhole seismic exploration device and apparatus'19914,953,136'Downhole seismic exploration device and apparatus'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2015Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (4)· patent assignee history
1990–1991Based in Bellevue, WA, US· patent location history
2013–2014Patents assigned to FINCI BULENT (2)· patent assignee history
2013–2014Patents assigned to MACRAE JONATHAN (2)· patent assignee history
2013–2014Patents assigned to PORTER ROBERT CRISPIN (2)· patent assignee history
2013–2015Based in Cypress, TX, US· patent location history
2014Patents assigned to AIVALIS JAMES G (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SCHLUMBERGER TECHNOLOGY CORP41990–2015
FINCI BULENT22013–2014
MACRAE JONATHAN22013–2014
PORTER ROBERT CRISPINself22013–2014
AIVALIS JAMES G12014
Locations
LocationPatentsSpan
Cypress, Texas, US32013–2015
Bellevue, Washington, US21990–1991