Inventor

William H. Gerdes

Inventor
Hudson, OH, US

Overview

14→
Patents
1979–2013
Patent span
Performing operations
Primary field (CPC B)

Patents· 14 as inventor

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

B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry36%
C07DHeterocyclic compounds18%
Y02PClimate change mitigation technologies in the production or processing of goods13%
B01DSeparation8%
C07CAcyclic or carbocyclic compounds8%
C04BLime, magnesia5%
C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals3%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds3%
Y02ATechnologies for adaptation to climate change3%
Y02TClimate change mitigation technologies related to transportation3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–2013Based in Hudson, OH, US· patent location history
1988–1992Patents assigned to NORTON CO (3)· patent assignee history
1992–2013Patents assigned to SHELL OIL CO (4)· patent assignee history
1993–1998Patents assigned to NORTON CHEM PROCESS PROD (4)· patent assignee history
2011–2013Patents assigned to GERDES WILLIAM HERMAN (3)· patent assignee history
2011–2013Patents assigned to LOCKEMEYER JOHN ROBERT (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NORTON CHEM PROCESS PROD41993–1998
SHELL OIL CO41992–2013
GERDES WILLIAM HERMANself32011–2013
LOCKEMEYER JOHN ROBERT32011–2013
NORTON CO31988–1992
Locations
LocationPatentsSpan
Hudson, OH, US141979–2013