Inventor

William J. Welch

Inventor
Madison, CT, US

Overview

12→
Patents
1984–2016
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 12 as inventor

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

F01Dprimary
F01DNon-positive displacement machines or engines, e.g. steam turbines13%
G01NInvestigating or analysing materials by determining their chemical or physical properties13%
A61KPreparations for medical, dental or toiletry purposes10%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations6%
B08BCleaning in general6%
A01NPreservation of bodies of humans or animals or plants or parts thereof3%
B64FGround or aircraft-carrier-deck installations specially adapted for use in connection with aircraft3%
C07CAcyclic or carbocyclic compounds3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984Based in Benicia, CA, US· patent location history
1999–2003Based in San Francisco, CA, US· patent location history
2000–2008Patents assigned to UNIV CALIFORNIA (4)· patent assignee history
2005Based in Waterloo, CA· patent location history
2008Based in Berkeley, CA, US· patent location history
2012–2014Patents assigned to UNITED TECHNOLOGIES CORP (3)· patent assignee history
2012–2014Patents assigned to WELCH WILLIAM J (2)· patent assignee history
2012Patents assigned to DIAMOS DAVID G (1)· patent assignee history
2012–2016Based in Madison, CT, US· patent location history
2014–2016Patents assigned to ECOSERVICES LLC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV CALIFORNIA42000–2008
ECOSERVICES LLC32014–2016
UNITED TECHNOLOGIES CORP32012–2014
WELCH WILLIAM Jself22012–2014
DIAMOS DAVID G12012
Locations
LocationPatentsSpan
Madison, CT, US52012–2016
San Francisco, California, US41999–2003
Berkeley, California, US12008
Waterloo, CA12005
Benicia, California, US11984