Frank L. Mitchell
27Patents
16h-index
7Co-inventors
74Inventor score
Filing activity: Jan 24, 1975 → Apr 28, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5284184A | Corrugated multi-layer tubing having at least one fluoroplastic layer | Mechanical Engineering; Lighting; Heating | 145 | Expired |
| US5383087A | Multi-layer fuel and vapor tube | Mechanical Engineering; Lighting; Heating | 77 | Expired |
| US5469892A | Corrugated polymeric tubing having at least three layers with at least two respective layers composed of polymeric materials dissimilar to one another | Emerging Cross-Sectional Technologies | 73 | Expired |
| US5460771A | Process for producing corrugated multi-layer tubing having layers of differing plastic characteristics | Performing Operations; Transporting | 60 | Expired |
| US5520223A | Extruded multiple plastic layer coating bonded to the outer surface of a metal tube having an optical non-reactive inner layer and process for making the same | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5524673A | Multi-layer tubing having electrostatic dissipation for handling hydrocarbon fluids | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5566720A | Elongated fuel and vapor tube having multiple layers and method of making the same | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US5867883A | Extruded multiple plastic layer coating bonded to the outer surface of a metal tube having an optional non-reactive inner layer and process for making the same | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5743304A | Multi-layer fuel and vapor tube | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US5590691A | Extruded multiple plastic layer coating bonded to a metal tube | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6378562B1 | Multi-layer tubing having electrostatic dissipation for handling hydrocarbon fluids | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5884671A | Multi-layer fuel and vapor tube | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5996642A | Multi-layer tubing having electrostatic dissipation for handling hydrocarbon fluids | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5638871A | Extruded multiple plastic layer coating bonded to a metal tube and process for making the same | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5678611A | Multi-layer fuel and vapor tube | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5884672A | Multi-layer fuel and vapor tube | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5771940A | Extruded multiple plastic layer coating bonded to a metal tube and process for making the same | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5865218A | Multi-layer fuel and vapor tube | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6245183A | Process for manufacturing tubing having a metal layer with an external surface overlaying by multiple plastic layers bonded thereto | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6003562A | Extruded multiple plastic layer coating bonded to a metal tube and process for making the same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6170534A | Multi-layer fuel and vapor tube | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4112633A | Protective workman and equipment covers | Fixed Constructions | 6 | Expired |
| US6634389B2 | Multi-layer fuel and vapor tube | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6896005B2 | Multi-layer tubing having electrostatic dissipation for handling hydrocarbon fluids | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6321795A | Multi-layer fuel and vapor tube | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.