Inventor
James W. Ratz
Inventor
Bloomington, MN, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G05Dprimary
G05DSystems for controlling or regulating non-electric variables45%
F23NRegulating or controlling combustion36%
G05FSystems for regulating electric or magnetic variables9%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters9%
PatentTitleYear
7,293,718'Variable output heating and cooling control'20076,866,202'Variable output heating and cooling control'20056,864,659'Variable speed controller for air moving applications using an AC induction motor'20055,352,930'System powered power supply using dual transformer HVAC systems'19945,230,482'Electronic time thermostat with a temporary next period adjustment means'19935,226,591'Active low temperature limit for battery powered thermostat'19935,203,497'Communicating thermostat'19935,197,668'Communicating thermostat'19934,789,329'Thermostatically operated fuel valve control circuit'19884,250,441'Servo apparatus with electrical motion limiting'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1994Patents assigned to HONEYWELL INC (7)· patent assignee history
1981–2007Based in Bloomington, MN, US· patent location history
2005–2007Patents assigned to VARIDIGM CORP (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HONEYWELL INC | 7 | 1981–1994 |
| VARIDIGM CORP | 3 | 2005–2007 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bloomington, Minnesota, US | 10 | 1981–2007 |