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Inventor

John Ratulowski

Inventor
Edmonton, CA

Overview

11→
Patents
2005–2021
Patent span
Physics
Primary field (CPC G)

Patents· 11 as inventor

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

G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties40%
E21BEarth or rock drilling30%
G01VGeophysics10%
G06FElectric digital data processing10%
B01LChemical or physical laboratory apparatus for general use5%
B81BMicrostructural devices or systems, e.g. micromechanical devices5%
PatentTitleYear
11,118,428Construction of digital representation of complex compositional fluids202110,895,544Measurement of liquid parameters using a microfluidic device202110,465,483Digital core sensitivity analysis20199,869,624'Method and apparatus for characterizing interfacial tension between two immiscible or partially miscible fluids'20189,689,858'Method and apparatus for measuring asphaltene onset conditions and yields of crude oils'20178,825,408'Using models for equilibrium distributions of asphaltenes in the prescence of GOR gradients to determine sampling procedures'20148,380,446'System and method for determining the phase envelope of a gas condensate'20137,933,018'Spectral imaging for downhole fluid characterization'20117,158,887'Fluids chain-of-custody'20077,150,183'Compositional characterization and quantification of solid deposits from hydrocarbon fluids'20066,959,588'Couette device and method to study solids deposition from flowing fluids'2005

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005–2021Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (11)· patent assignee history
2005–2019Based in Edmonton, CA· patent location history
2006–2011Based in Missouri City, TX, US· patent location history
2013–2014Patents assigned to RATULOWSKI JOHN (2)· patent assignee history
2013Patents assigned to MOSTOWFI FARSHID (1)· patent assignee history
2014Patents assigned to FREED DENISE E (1)· patent assignee history
2014Patents assigned to INDO KENTARO (1)· patent assignee history
2021Based in Cambridge, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SCHLUMBERGER TECHNOLOGY CORP112005–2021
RATULOWSKI JOHNself22013–2014
FREED DENISE E12014
INDO KENTARO12014
MOSTOWFI FARSHID12013
Locations
LocationPatentsSpan
Edmonton, CA62005–2019
Missouri City, Texas, US32006–2011
Cambridge, Massachusetts, US22021