Inventor

Tom Hill

Inventor

Kingwood, TX, US

Overview

1976–2018

Patent span

Fixed constructions

Primary field (CPC E)

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

E21Bprimary

E21BEarth or rock drilling45%

Y10TTechnical subjects covered by former us classification18%

F16LPipes9%

G01BMeasuring length, thickness or similar linear dimensions9%

G06FElectric digital data processing9%

H04LTransmission of digital information, e.g. telegraphic communication9%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to EXXON PRODUCTION RESEARCH CO (1)· patent assignee history

1976Based in Pensacola, FL, US· patent location history

1990Patents assigned to HILL TOM H (1)· patent assignee history

1990Based in Houston, TX, US· patent location history

1999Patents assigned to BRITISH GAS PLC (1)· patent assignee history

1999Based in Gateshead, GB· patent location history

2003–2006Patents assigned to WEATHERFORD LAMB (3)· patent assignee history

2003–2006Based in Kingwood, TX, US· patent location history

2018Patents assigned to BITCASA INC (1)· patent assignee history

2018Based in Los Altos, CA, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
WEATHERFORD LAMB	3	2003–2006
BITCASA INC	1	2018
BRITISH GAS PLC	1	1999
EXXON PRODUCTION RESEARCH CO	1	1976
HILL TOM Hself	1	1990

Locations