Inventor

Joseph C. Winkler

Inventor
Houston, TX, US

Overview

4→
Patents
2001–2006
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B01Dprimary
B01DSeparation33%
B07BSeparating solids from solids by sieving, screening, sifting or by using gas currents33%
E21BEarth or rock drilling33%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001Patents assigned to TUBOSCOPE I P INC (2)· patent assignee history
2001–2006Based in Houston, TX, US· patent location history
2003–2006Patents assigned to VARCO INT (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TUBOSCOPE I P INC22001
VARCO INT22003–2006
Locations
LocationPatentsSpan
Houston, Texas, US42001–2006