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Inventor

Charles O. Stokley

Inventor
Houston, TX, US

Overview

15→
Patents
1979–2007
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 15 as inventor

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

E21Bprimary
E21BEarth or rock drilling93%
G01NInvestigating or analysing materials by determining their chemical or physical properties7%
PatentTitleYear
7,284,619'Packer with positionable collar'20076,752,205'Inflatable packer with prestressed bladder'20045,711,372'Inflatable packer with port collar valving and method of setting'19985,682,952'Extendable casing circulator and method'19975,289,875'Apparatus for obtaining subterranean fluid samples'19945,191,939'Casing circulator and method'19935,137,086'Method and apparatus for obtaining subterranean fluid samples'19925,010,966'Drilling method'19914,923,007'Inflatable packer with improved reinforcing members'19904,893,678'Multiple-set downhole tool and method'19904,823,882'Multiple-set packer and method'19894,768,590'Inflatable well packer'19884,648,448'Packer assembly'19874,194,561'Placement apparatus and method for low density ball sealers'19804,167,117'Apparatus and method for sampling flowing fluids and slurries'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1980Patents assigned to EXXON PRODUCTION RESEARCH CO (2)· patent assignee history
1979–2007Based in Houston, TX, US· patent location history
1987–2007Patents assigned to TAM INT INC (5)· patent assignee history
1987–1988Based in Sugar Land, TX, US· patent location history
1990–1998Patents assigned to TAM INTERNATIONAL (7)· patent assignee history
1991Patents assigned to CHALKBUS INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TAM INTERNATIONAL71990–1998
TAM INT INC51987–2007
EXXON PRODUCTION RESEARCH CO21979–1980
CHALKBUS INC11991
Locations
LocationPatentsSpan
Houston, Texas, US131979–2007
Sugar Land, Texas, US21987–1988