Inventor

Michael J. Semmens

Inventor

Minneapolis, MN, US

Overview

1978–2015

Patent span

Performing operations

Primary field (CPC B)

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

Y10Sprimary

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests27%

B01DSeparation18%

B01FMixing, e.g. dissolving, emulsifying or dispersing18%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry9%

C02FTreatment of water, waste water, sewage, or sludge9%

C25DProcesses for the electrolytic or electrophoretic production of coatings9%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management9%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1978Based in Champaign, IL, US· patent location history

1990–1997Patents assigned to UNIV MINNESOTA (3)· patent assignee history

1990–1997Based in Minneapolis, MN, US· patent location history

1991–2015Patents assigned to SEMMENS MICHAEL J (2)· patent assignee history

2015Patents assigned to HIMSTEDT HEATH H (1)· patent assignee history

2015Patents assigned to QIAN XIANGHONG (1)· patent assignee history

2015Patents assigned to ULBRICHT MATHIAS (1)· patent assignee history

2015Based in St. Paul, MN, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations