Inventor

David A. Christiansen

Inventor

Bloomington, MN, US

Overview

7→

Patents

1981–2015

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 7 as inventor

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

F25Dprimary

F25DRefrigerators30%

B60HArrangements of heating, cooling, ventilating or other air-treating devices specially adapted for passenger or goods spaces of vehicles20%

F25BRefrigeration machines, plants or systems20%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers10%

G05DSystems for controlling or regulating non-electric variables10%

B61DBody details or kinds of railway vehicles5%

H04LTransmission of digital information, e.g. telegraphic communication5%

PatentTitleYear

9,090,378'Shipping container load securer'2015 5,172,560'Method of operating a transport refrigeration system'1992 5,152,152'Method of determining refrigerant charge'1992 4,918,932'Method of controlling the capacity of a transport refrigeration system'1990 4,885,564'Power line carrier communication system for monitoring refrigerated containers'1989 4,663,725'Microprocessor based control system and method providing better performance and better operation of a shipping container refrigeration system'1987 4,257,240'Container refrigeration unit'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1992Patents assigned to THERMO KING CORP (6)· patent assignee history

1981–1992Based in Bloomington, MN, US· patent location history

2015Patents assigned to SIGNODE IND GROUP LLC (1)· patent assignee history

2015Based in Vancouver, WA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
THERMO KING CORP	6	1981–1992
SIGNODE IND GROUP LLC	1	2015

Locations

Location	Patents	Span
Bloomington, Minnesota, US	6	1981–1992
Vancouver, Washington, US	1	2015