Purdue Research Foundation
2,615Patents
2,043Active
2,615Granted
62Portfolio score
Filing activity: Mar 5, 1973 → Mar 31, 2025 · 263 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4902508A | Tissue graft composition | Emerging Cross-Sectional Technologies | 795 | Expired |
| US5916239A | Method and apparatus using vagal stimulation for control of ventricular rate during atrial fibrillation | Human Necessities | 742 | Expired |
| US5281422A | Graft for promoting autogenous tissue growth | Emerging Cross-Sectional Technologies | 724 | Expired |
| US4425920A | Apparatus and method for measurement and control of blood pressure | Human Necessities | 675 | Expired |
| US4979948A | Method and apparatus for thermally destroying a layer of an organ | Human Necessities | 545 | Expired |
| US6126686A | Artificial vascular valves | Emerging Cross-Sectional Technologies | 521 | Expired |
| US5755791A | Perforated submucosal tissue graft constructs | Human Necessities | 467 | Expired |
| US5690681A | Method and apparatus using vagal stimulation for control of ventricular rate during atrial fibrillation | Human Necessities | 465 | Expired |
| US5372821A | Graft for promoting autogenous tissue growth | Emerging Cross-Sectional Technologies | 463 | Expired |
| US4956178A | Tissue graft composition | Human Necessities | 456 | Expired |
| US5711969A | Large area submucosal tissue graft constructs | Human Necessities | 445 | Expired |
| US5554389A | Urinary bladder submucosa derived tissue graft | Emerging Cross-Sectional Technologies | 421 | Expired |
| US5997575A | Perforated submucosal tissue graft constructs | Human Necessities | 388 | Expired |
| US5445833A | Tendon or ligament graft for promoting autogenous tissue growth | Emerging Cross-Sectional Technologies | 379 | Expired |
| US4827935A | Demand electroventilator | Human Necessities | 355 | Expired |
| US6271278A | Hydrogel composites and superporous hydrogel composites having fast swelling, high mechanical strength, and superabsorbent properties | Chemistry; Metallurgy | 355 | Expired |
| US5010772A | Pressure mapping system with capacitive measuring pad | Human Necessities | 344 | Expired |
| US5416016A | Method for enhancing transmembrane transport of exogenous molecules | Chemistry; Metallurgy | 339 | Expired |
| US6099567A | Stomach submucosa derived tissue graft | Human Necessities | 321 | Expired |
| US5445144A | Apparatus and method for acoustically guiding, positioning, and monitoring a tube within a body | Human Necessities | 318 | Expired |
| US5955110A | Multilayered submucosal graft constructs and method for making the same | Human Necessities | 316 | Expired |
| US5865754A | Fluorescence imaging system and method | Physics | 308 | Expired |
| US4222115A | Spread spectrum apparatus for cellular mobile communication systems | Electricity | 304 | Expired |
| US5108921A | Method for enhanced transmembrane transport of exogenous molecules | Chemistry; Metallurgy | 299 | Expired |
| US5573784A | Graft for promoting autogenous tissue growth | Emerging Cross-Sectional Technologies | 281 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.