Helmut Lehmann
18Patents
6h-index
23Co-inventors
66Inventor score
Filing activity: May 7, 1976 → Jul 6, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5046816A | Device for arranging optical fibers in an endoscope optical system | Human Necessities | 19 | Expired |
| US4205436A | Device for loading film cassettes | Emerging Cross-Sectional Technologies | 14 | Expired |
| USD356997S | Multi-plug connector | General | 12 | Expired |
| US4384061A | Thermosetting polycondensates containing amide and imide groups, and their use | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4863304A | Rapid connector between an endoscope and a camera | Physics | 11 | Expired |
| US6337442B1 | Coating which is resistant to partial discharges, for enamelled wire | Electricity | 10 | Expired |
| US4118040A | Contactless seal | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6022918A | Wire enamel formulation with internal lubricant | Electricity | 5 | Expired |
| US4058640A | Electrical insulation of metallic conductors | Electricity | 5 | Expired |
| US6316046A | Wire enamels containing polyesterimides and/or polyamideimides with polyoxyalkylenediamines as molecular elements | Electricity | 4 | Expired |
| US4751107A | Heat-curable hot-melt enamel and its preparation | Electricity | 4 | Expired |
| US4252842A | Electrical insulation of metallic conductors | Electricity | 4 | Expired |
| US4429072A | Preparation of aqueous thermosetting electrical insulating varnishes, and use of the varnishes | Electricity | 3 | Expired |
| US4590025A | Impregnation of thread-covered wires and braided conductors by extrusion of thermoplastics | Electricity | 3 | Expired |
| US4439579A | Preparation of aqueous thermosetting electrical insulating varnishes | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5059660A | Self-bonding enamel solution for heat-resistant coatings | Electricity | 2 | Expired |
| US4285218A | System for fixing prints with reactive and vat dyes | Textiles; Paper | 2 | Expired |
| US8033987B2 | Medical instrument | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.