Inventor
Irvin T. Pierskalla
Inventor
Prior Lake, MN, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Bprimary
A61BDiagnosis50%
G01NInvestigating or analysing materials by determining their chemical or physical properties17%
A61JContainers specially adapted for medical or pharmaceutical purposes8%
B01LChemical or physical laboratory apparatus for general use8%
B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
11,013,434Carbon dioxide sensor20217,736,311'System for automated measurement of skin perfusion pressure'20107,198,756'Non-invasive measurement of pH'20076,865,407'Calibration technique for non-invasive medical devices'20056,684,680'Cartridge for packaging a sensor in a fluid calibrant'20045,976,085'In situ calibration system for sensors located in a physiologic line'19995,697,366'In situ calibration system for sensors located in a physiologic line'19975,690,215'Device for maintaining the partial pressure of a dissolved gas in a fluid and related methods of use'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2007Patents assigned to OPTICAL SENSORS INC (6)· patent assignee history
1997–1999Based in Robbinsdale, MN, US· patent location history
2004–2021Based in Prior Lake, MN, US· patent location history
2010Patents assigned to VASAMED INC (1)· patent assignee history
2021Patents assigned to EXOSTAT MEDICAL INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OPTICAL SENSORS INC | 6 | 1997–2007 |
| EXOSTAT MEDICAL INC | 1 | 2021 |
| VASAMED INC | 1 | 2010 |
Locations
| Location | Patents | Span |
|---|---|---|
| Prior Lake, Minnesota, US | 5 | 2004–2021 |
| Robbinsdale, Minnesota, US | 3 | 1997–1999 |