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Inventor

David S. Williams

Inventor
Derby, GB

Overview

8→
Patents
1985–2014
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 8 as inventor

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

F16Jprimary
F16JPistons20%
Y10TTechnical subjects covered by former us classification15%
F01DNon-positive displacement machines or engines, e.g. steam turbines10%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants10%
B23DPlaning5%
B24BMachines, devices, or processes for grinding or polishing5%
C23CCoating metallic material5%
E21BEarth or rock drilling5%
F02CGas-turbine plants5%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices5%
PatentTitleYear
8,794,633'Leaf seal'20148,752,288'Leaf seal'20148,100,404'Leaf seal arrangement'20127,980,562'Seal arrangement'20115,182,971'Button sharpening'19934,914,500'Method for fabricating semiconductor devices which include sources and drains having metal-containing material regions, and the resulting devices'19904,719,701'Dual blade saw attachment'19884,522,842'Boron nitride X-ray masks with controlled stress'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1990Patents assigned to AT & T BELL LAB (2)· patent assignee history
1988–2014Patents assigned to WILLIAMS DAVID S (3)· patent assignee history
1988Based in Oak Hill, WV, US· patent location history
1990Based in Convent Station, NJ, US· patent location history
1993Patents assigned to BOART INT LTD (1)· patent assignee history
1993Based in Krugersdorp, ZA· patent location history
2011–2014Patents assigned to ROLLS ROYCE PLC (4)· patent assignee history
2011–2012Based in Chesterfield, GB· patent location history
2014Patents assigned to FRANCESCHINI GERVAS (1)· patent assignee history
2014Based in Derby, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ROLLS ROYCE PLC42011–2014
WILLIAMS DAVID Sself31988–2014
AT & T BELL LAB21985–1990
BOART INT LTD11993
FRANCESCHINI GERVAS12014
Locations
LocationPatentsSpan
Derby, GB22014
Chesterfield, GB22011–2012
Krugersdorp, ZA11993
Convent Station, New Jersey, US11990
Oak Hill, WV, US11988