Calisolar, Inc.
6Patents
6Active
6Granted
44Portfolio score
Filing activity: Dec 30, 2006 → Aug 26, 2011 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8273176B2 | Method for processing silicon powder to obtain silicon crystals | Emerging Cross-Sectional Technologies | 3 | Active |
| US7955433B2 | Method and system for forming a silicon ingot using a low-grade silicon feedstock | Emerging Cross-Sectional Technologies | 3 | Active |
| US7887633B2 | Germanium-enriched silicon material for making solar cells | Emerging Cross-Sectional Technologies | 3 | Active |
| US8008107B2 | Semiconductor wafer pre-process annealing and gettering method and system for solar cell formation | Emerging Cross-Sectional Technologies | 2 | Active |
| US8216539B2 | Cascading purification | Chemistry; Metallurgy | 0 | Active |
| US8316745B2 | Semiconductor wafer pre-process annealing and gettering method and system for solar cell formation | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.