Inventor

Rennie L. Dickson

Inventor

Carrollton, TX, US

Overview

1986–2002

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 21 as inventor

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

E21Bprimary

E21BEarth or rock drilling91%

Y10TTechnical subjects covered by former us classification9%

PatentTitleYear

6,394,187'Flapper valve assembly apparatus and method'2002 6,352,118'System and method for communication hydraulic control to a wireline retrievable downhole device'2002 6,119,783'Linear indexing apparatus and methods of using same'2000 6,003,605'Balanced line tubing retrievable safety valve'1999 5,996,697'Static wellhead plug'1999 5,988,277'Running tool for static wellhead plug'1999 5,957,201'Verification apparatus and method for a static wellhead plug'1999 5,875,851'Static wellhead plug and associated methods of plugging wellheads'1999 5,826,661'Linear indexing apparatus and methods of using same'1998 5,323,859'Streamlined flapper valve'1994 5,318,127'Surface controlled annulus safety system for well bores'1994 5,249,630'Perforating type lockout tool'1993 5,179,973'Valve with pressure assisted closing system'1993 5,137,089'Streamlined flapper valve'1992 5,127,476'Lockout housing and sleeve for safety valve'1992 5,050,839'Valve'1991 4,945,993'Surface controlled subsurface safety valve'1990 4,834,183'Surface controlled subsurface safety valve'1989 4,723,606'Surface controlled subsurface safety valve'1988 4,632,184'Submersible pump safety systems'1986 4,624,315'Subsurface safety valve with lock-open system'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1993Patents assigned to OTIS ENG CO (9)· patent assignee history

1986–2002Based in Carrollton, TX, US· patent location history

1992Patents assigned to WILSON JERRY L (1)· patent assignee history

1994Patents assigned to HALLIBURTON CO (2)· patent assignee history

1998–2002Patents assigned to HALLIBURTON ENERGY SERV INC (8)· patent assignee history

1999Patents assigned to HALLIBURTON ENERY SERVICES INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
OTIS ENG CO	9	1986–1993
HALLIBURTON ENERGY SERV INC	8	1998–2002
HALLIBURTON CO	2	1994
HALLIBURTON ENERY SERVICES INC	1	1999
WILSON JERRY L	1	1992

Locations

Location	Patents	Span
Carrollton, Texas, US	21	1986–2002