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Inventor

John B. Weirich

Inventor
Spring, TX, US

Overview

9→
Patents
1989–2014
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 9 as inventor

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

E21Bprimary
E21BEarth or rock drilling80%
C09KMaterials for miscellaneous applications, not provided for elsewhere10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
8,739,870'System and method for sealing gravel exit ports in gravel pack assemblies'20148,622,125'Apparatus and methods for allowing fluid flow inside at least one screen and outside a pipe disposed in an well bore'20147,987,909'Apparatus and methods for allowing fluid flow inside at least one screen and outside a pipe disposed in a well bore'20117,721,810'Large inside diameter completion with position indication'20107,438,131'Expandable injector pipe'20086,176,323'Drilling systems with sensors for determining properties of drilling fluid downhole'20015,919,738'Fluids for use in drilling and completion operations comprising water insoluble colloidal complexes for improved rheology and filtration control'19994,915,172'Method for completing a non-vertical portion of a subterranean well bore'19904,856,591'Method and apparatus for completing a non-vertical portion of a subterranean well bore'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2010Patents assigned to BAKER HUGHES INC (6)· patent assignee history
1989–1990Based in Tomball, TX, US· patent location history
1999–2014Based in Spring, TX, US· patent location history
2008Based in Stavanger, NO· patent location history
2011Patents assigned to SUPERIOR ENGERY SERVICES L L C (1)· patent assignee history
2014Patents assigned to PINEDA FRANCISCO A (1)· patent assignee history
2014Patents assigned to SUPERIOR ENERGY SERVICES L L C (1)· patent assignee history
2014Patents assigned to SUPERIOR ENERGY SERVICES LLC (1)· patent assignee history
2014Based in Shreveport, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BAKER HUGHES INC61989–2010
PINEDA FRANCISCO A12014
SUPERIOR ENERGY SERVICES L L C12014
SUPERIOR ENERGY SERVICES LLC12014
SUPERIOR ENGERY SERVICES L L C12011
Locations
LocationPatentsSpan
Spring, Texas, US51999–2014
Tomball, Texas, US21989–1990
Shreveport, Texas, US12014
Stavanger, NO12008