Karl Hellberg
8Patents
3h-index
5Co-inventors
50Inventor score
Filing activity: Jun 27, 1977 → Jan 20, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4428920A | Process of producing potassium tetrafluoro aluminate | Performing Operations; Transporting | 17 | Expired |
| US5968288A | Method for the preparation of a soldering flux | Chemistry; Metallurgy | 4 | Expired |
| US8317319B2 | Co-axial multi-tip eyeglass retainer coupling and method of use | Performing Operations; Transporting | 3 | Active |
| USD631085S1 | Elastomeric multi-tip eyeglass retainer connector | General | 2 | Expired |
| US8535034B2 | Injection mold for overmolding compressible cordage | Performing Operations; Transporting | 2 | Active |
| US4222967A | Process for preparing bromine- and fluorine-containing halogenated hydrocarbons | Emerging Cross-Sectional Technologies | 2 | Expired |
| USD672158S1 | Elastomeric barbwire cordage | General | 0 | Active |
| USD665576S1 | Elastomeric bone cordage | General | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.