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Inventor

Randy R. Koivisto

Inventor
Fort Smith, AR, US

Overview

5→
Patents
2010–2019
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 5 as inventor

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

Y02Bprimary
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications27%
F24HFluid heaters, e.g. water or air heaters, having heat-generating means, e.g. heat pumps, in general18%
F25BRefrigeration machines, plants or systems18%
F25DRefrigerators18%
G01FMeasuring volume, volume flow, mass flow or liquid level9%
LOC139%
PatentTitleYear
10,190,806Apparatus and methods for controlling an electronic expansion valve in a refrigerant circuit20199,874,380Apparatus and methods for controlling an electronic expansion valve in a refrigerant circuit20189,677,785'Electronic water level sensing apparatus and associated methods'20178,385,729'Heat pump water heater and associated control system'2013D0607418'Touchpad'2010

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2010–2019Patents assigned to RHEEM MFG CO (5)· patent assignee history
2010–2019Based in Fort Smith, AR, US· patent location history
2013Patents assigned to BERGT CARL (1)· patent assignee history
2013Patents assigned to KLEMAN KELVIN W (1)· patent assignee history
2013Patents assigned to KOIVISTO RANDY R (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RHEEM MFG CO52010–2019
BERGT CARL12013
KLEMAN KELVIN W12013
KOIVISTO RANDY Rself12013
Locations
LocationPatentsSpan
Fort Smith, AR, US52010–2019