R. Hayes Helgren
13Patents
11h-index
25Co-inventors
64Inventor score
Filing activity: Dec 31, 1991 → Apr 3, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5310469A | Biosensor with a membrane containing biologically active material | Emerging Cross-Sectional Technologies | 444 | Expired |
| US5520666A | Valved intravenous fluid line connector | Emerging Cross-Sectional Technologies | 266 | Expired |
| US5498338A | Peritoneal dialysis system using reverse osmosis purification device | Performing Operations; Transporting | 253 | Expired |
| US5470327A | Pointed adapter for blunt entry device | Human Necessities | 208 | Expired |
| US5334180A | Sterile formed, filled and sealed flexible container | Emerging Cross-Sectional Technologies | 116 | Expired |
| US5580351A | Pointed adapter for blunt entry device | Human Necessities | 106 | Expired |
| US5514123A | Sterile formed, filled and sealed flexible container | Emerging Cross-Sectional Technologies | 82 | Expired |
| US6652509B1 | Housing capable of connecting a container to a medical device | Emerging Cross-Sectional Technologies | 73 | Expired |
| US5951863A | Water purification using reverse osmosis device for formulation of medical solution | Performing Operations; Transporting | 61 | Expired |
| US5493845A | Method for forming, filling and sealing a sterile flexible container | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5354035A | Object rotating, lifting and storage system | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5403525A | Method of forming a reseal member for use with blunt cannulas | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5983770A | Reseal with a partial perforation and method and apparatus for creating a partial perforation in a reseal | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.