Walter Lechner
8Patents
2h-index
6Co-inventors
44Inventor score
Filing activity: Mar 13, 1975 → Nov 6, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4753411A | Portable beach umbrella safety base | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6731318B2 | Method for controlling the heating elements of a thermal print head | Performing Operations; Transporting | 5 | Expired |
| US11433854B2 | Access control method for persons and vehicles and system for carrying out the method | Physics | 2 | Active |
| US3941212A | Clockwork motor, especially for toys | Human Necessities | 2 | Expired |
| US11854321B2 | Access control method for persons and system for carrying out the method | Physics | 1 | Active |
| US5101007A | Process for the preparation of naphthalenesulfonic acid/formaldehyde condensates having a low free formaldehyde content | Chemistry; Metallurgy | 1 | Expired |
| US12190665B2 | Access control method for persons and system for carrying out the method | Physics | 0 | Active |
| US5206336A | Process for the preparation of naphthalenesulfonic acid/formaldehyde condensates having a low free formaldehyde content | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.