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Inventor

Paul William Dufilho

Inventor
Willis, TX, US

Overview

5→
Patents
2012–2020
Patent span
Performing operations
Primary field (CPC B)

Patents· 5 as inventor

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

B07Bprimary
B07BSeparating solids from solids by sieving, screening, sifting or by using gas currents42%
B01DSeparation33%
E21BEarth or rock drilling25%
PatentTitleYear
10,556,196Vector maximizing screen20209,643,111'Vector maximizing screen'20178,695,805'Magnetic vibratory screen clamping'20148,622,220'Vibratory separators and screens'20148,312,995'Magnetic vibratory screen clamping'2012

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2012–2020Patents assigned to NAT OILWELL VARCO LP (4)· patent assignee history
2012Patents assigned to DUFILHO PAUL (1)· patent assignee history
2012–2020Based in Willis, TX, US· patent location history
2014Patents assigned to DUFILHO PAUL WILLIAM (1)· patent assignee history
2014Patents assigned to LARSON THOMAS ROBERT (1)· patent assignee history
2014Patents assigned to SCHULTE JR DAVID LEE (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NAT OILWELL VARCO LP42012–2020
DUFILHO PAULself12012
DUFILHO PAUL WILLIAMself12014
LARSON THOMAS ROBERT12014
SCHULTE JR DAVID LEE12014
Locations
LocationPatentsSpan
Willis, Texas, US52012–2020