Franz Koppl
19Patents
11h-index
17Co-inventors
69Inventor score
Filing activity: Jul 13, 1976 → Mar 29, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4179530A | Process for the deposition of pure semiconductor material | Chemistry; Metallurgy | 350 | Expired |
| US4131659A | Process for producing large-size, self-supporting plates of silicon | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4311545A | Method for the deposition of pure semiconductor material | Chemistry; Metallurgy | 33 | Expired |
| US4536642A | Device for treating gases at high temperatures | Performing Operations; Transporting | 29 | Expired |
| US6375011B1 | Vibrating conveyor and method for conveying silicon fragments | Performing Operations; Transporting | 19 | Expired |
| US4173944A | Silverplated vapor deposition chamber | Chemistry; Metallurgy | 17 | Expired |
| US6040544A | Optoelectronic separation apparatus | Performing Operations; Transporting | 13 | Expired |
| US5820688A | Method for the treatment of semiconductor material | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5660335A | Method and device for the comminution of semiconductor material | Performing Operations; Transporting | 12 | Expired |
| US4454104A | Process for working up the residual gases obtained in the deposition of silicon and in the conversion of silicon tetrachloride | Chemistry; Metallurgy | 12 | Expired |
| US4113532A | Process for producing large-size substrate-based semiconductor material utilizing vapor-phase deposition and subsequent resolidification | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4213830A | Method for the transfer of heat | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4252780A | Process for working up hydrolyzable and/or water-soluble compounds | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4065533A | Process for the continuous production of silicon rods or tubes by gaseous deposition into a flexible wound band | Chemistry; Metallurgy | 8 | Expired |
| US4515762A | Process for processing waste gases resulting during the production of silicon | Chemistry; Metallurgy | 6 | Expired |
| US6024306A | Device and method for fragmenting semiconductor material | Performing Operations; Transporting | 6 | Expired |
| US4062714A | Process for making hollow silicon bodies and bodies utilizing board-shaped members to form the basic geometric shape so made | Chemistry; Metallurgy | 6 | Expired |
| US4160797A | Process for the deposition of polycrystalline silicon from the gas phase on heated carriers | Electricity | 5 | Expired |
| US4211040A | Process for machining silicon rods and tubes by abrasion | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.