Inventor
Leonard S. Smith
Inventor
Minneapolis, MN, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Bprimary
A61BDiagnosis18%
G01RMeasuring electric variables12%
H01FMagnets12%
A01KAnimal husbandry6%
B23KSoldering or unsoldering6%
F04BPositive-displacement machines for liquids6%
F04DNon-positive-displacement pumps6%
F26BDrying solid materials or objects by removing liquid therefrom6%
G01SRadio direction-finding6%
G05DSystems for controlling or regulating non-electric variables6%
PatentTitleYear
9,649,037'Method and apparatus for hemodynamic monitoring using combined blood flow and blood pressure measurement'20178,075,485'Gain setting in doppler haemodynamic monitors'20116,645,149'Ultrasound devices'20035,357,078'Precision linear variable current control'19945,172,511'Fish or bait preservation apparatus and method'19924,881,873'Capacitance level sensor for a bilge pump'19894,714,812'Apparatus and method for processing dielectric materials with microwave energy'19874,625,175'Device indicating the time remaining of the useful life of a battery'19864,546,302'Protective sensing means for battery charging circuit'19854,227,148'External means for increasing the sensitivity of a moving magnet type of meter'19804,164,723'Shunt release and locking structure'19794,086,551'Shunt positioning device'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1985Patents assigned to CENTURY MFG CO (4)· patent assignee history
1978–1994Based in Minneapolis, MN, US· patent location history
1980–1985Based in Eden Prairie, MN, US· patent location history
1986–1992Based in Richfield, MN, US· patent location history
1989Patents assigned to ALTUS TECHNOLOGY CORP (1)· patent assignee history
1992Patents assigned to COOK GARY L (1)· patent assignee history
2003–2017Based in Ringwood, GB· patent location history
2011–2017Patents assigned to DELTEX MEDICAL LTD (2)· patent assignee history
2011–2017Patents assigned to SMITH LEONARD (2)· patent assignee history
2011Based in Hampshire, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CENTURY MFG CO | 4 | 1978–1985 |
| DELTEX MEDICAL LTD | 2 | 2011–2017 |
| SMITH LEONARDself | 2 | 2011–2017 |
| ALTUS TECHNOLOGY CORP | 1 | 1989 |
| COOK GARY L | 1 | 1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Minneapolis, Minnesota, US | 3 | 1978–1994 |
| Richfield, Minnesota, US | 3 | 1986–1992 |
| Ringwood, GB | 2 | 2003–2017 |
| Eden Prairie, Minnesota, US | 2 | 1980–1985 |
| Hampshire, GB | 1 | 2011 |