Charles M. Frey
9Patents
5h-index
5Co-inventors
56Inventor score
Filing activity: May 11, 1994 → May 9, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5725499A | Dual barreled syringe and methods of assembly and use | Human Necessities | 59 | Expired |
| US6899254B1 | Venting seal for dispenser | Performing Operations; Transporting | 13 | Expired |
| US9968959B2 | Component delivery system utilizing film bags | Performing Operations; Transporting | 9 | Active |
| US9517488B2 | Component delivery system utilizing film bags | Performing Operations; Transporting | 9 | Active |
| US9469061B2 | One-piece ventable piston for a dispensing apparatus, a dispensing apparatus with same, and method of making same | Performing Operations; Transporting | 6 | Active |
| US10625293B2 | Component delivery system utilizing film bags | Performing Operations; Transporting | 1 | Active |
| US10525500B2 | Component delivery system utilizing film bags | Performing Operations; Transporting | 0 | Active |
| US11505369B2 | Tack welded fin seal | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10486187B2 | Component delivery system utilizing film bags | General | 0 | Revoked |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.