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Inventor

Sudarsanam Chellappa

Inventor
Houston, TX, US

Overview

6→
Patents
2008–2020
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 6 as inventor

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

E21Bprimary
E21BEarth or rock drilling86%
F16JPistons14%
PatentTitleYear
10,648,266Downhole milling cutting structures20209,926,746'Actuating a downhole tool'20188,607,861'Metal-to-metal seal with retention device'20138,596,345'RCD sealing elements with multiple elastomer materials'20138,020,638'Seal with dynamic sealing surface at the outside diameter'20117,461,708'Elastomeric seal assembly having auxiliary annular seal components'2008

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2008–2018Patents assigned to SMITH INTERNATIONAL (5)· patent assignee history
2008–2020Based in Houston, TX, US· patent location history
2013Patents assigned to CHELLAPPA SUDARSANAM (2)· patent assignee history
2013Patents assigned to LI YANMEI (1)· patent assignee history
2013Patents assigned to LOCKSTEDT ALAN W (1)· patent assignee history
2013Patents assigned to SAYLOR III JAMES E (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SMITH INTERNATIONAL52008–2018
CHELLAPPA SUDARSANAMself22013
LI YANMEI12013
LOCKSTEDT ALAN W12013
SAYLOR III JAMES E12013
Locations
LocationPatentsSpan
Houston, Texas, US62008–2020