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Inventor

Stephen M. Evans

Inventor
Standish, GB

Overview

12→
Patents
1980–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 12 as inventor

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

E21Bprimary
E21BEarth or rock drilling29%
B22FWorking metallic powder13%
C22CAlloys10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
Y10TTechnical subjects covered by former us classification10%
B22DCasting of metals6%
B23KSoldering or unsoldering6%
A61BDiagnosis3%
B27DWorking veneer or plywood3%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form3%
PatentTitleYear
11,033,255Insertable endoscopic instrument for tissue removal20216,575,350'Method of applying a wear-resistant layer to a surface of a downhole component'20036,454,028'Wear resistant drill bit'20026,348,110'Methods of manufacturing rotary drill bits'20026,234,261'Method of applying a wear-resistant layer to a surface of a downhole component'20016,148,936'Methods of manufacturing rotary drill bits'20006,116,360'Methods of manufacturing rotary drill bits'20005,944,128'Matrix hard facing by lost wax process'19995,910,766'Vehicular accident locator and identification system'19995,732,783'In or relating to rotary drill bits'19985,425,288'Manufacture of rotary drill bits'19954,191,606'Method for securing composition board panels together'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to EVANS STEPHEN M (1)· patent assignee history
1995–1998Patents assigned to CAMCO DRILLING GROUP LTD (2)· patent assignee history
1995Based in Hardwicke, GB· patent location history
1998–2003Based in Standish, GB· patent location history
1999–2002Patents assigned to CAMCO INT UK LTD (5)· patent assignee history
1999Based in Stone Mountain, GA, US· patent location history
2001Based in Gloucester, GB· patent location history
2002Patents assigned to CAMCO INTERNAT U K LTD (1)· patent assignee history
2021Patents assigned to INTERSCOPE INC (1)· patent assignee history
2021Based in Westford, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CAMCO INT UK LTD51999–2002
CAMCO DRILLING GROUP LTD21995–1998
CAMCO INTERNAT U K LTD12002
EVANS STEPHEN Mself11980
INTERSCOPE INC12021
Locations
LocationPatentsSpan
Standish, GB71998–2003
Westford, Massachusetts, US12021
Gloucester, GB12001
Stone Mountain, Georgia, US11999
Hardwicke, GB11995