Inventor

Johnny D. Yu

Inventor

Centerville, OH, US

Overview

1986–2020

Patent span

Electricity

Primary field (CPC H)

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

H02Kprimary

H02KDynamo-electric machines22%

F04DNon-positive-displacement pumps11%

F25BRefrigeration machines, plants or systems11%

G01MTesting static or dynamic balance of machines or structures11%

H01RElectrically-conductive connections11%

H02JElectric power networks11%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems11%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications11%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1986Patents assigned to COPELAND CORP (1)· patent assignee history

1986Based in Dayton, OH, US· patent location history

2000–2013Patents assigned to DAYTON PHOENIX GROUP INC (4)· patent assignee history

2000–2013Based in Centerville, OH, US· patent location history

2013Patents assigned to BRYANT BRADLEY S (1)· patent assignee history

2020Patents assigned to SIEMENS INDUSTRY INC (1)· patent assignee history

2020Patents assigned to SIEMENS MOBILITY INC (1)· patent assignee history

2020Based in Jericho, NY, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations