Charles Wickersham
30Patents
12h-index
45Co-inventors
81Inventor score
Filing activity: Oct 8, 1981 → Mar 17, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5234487A | Method of producing tungsten-titanium sputter targets and targets produced thereby | Chemistry; Metallurgy | 40 | Expired |
| US5282943A | Method of bonding a titanium containing sputter target to a backing plate and bonded target/backing plate assemblies produced thereby | Electricity | 36 | Expired |
| US6992261B2 | Sputtering target assemblies using resistance welding | Chemistry; Metallurgy | 32 | Expired |
| US4820393A | Titanium nitride sputter targets | Chemistry; Metallurgy | 30 | Expired |
| US4683043A | Cubic boron nitride preparation | Chemistry; Metallurgy | 25 | Expired |
| US4564435A | Target assembly for sputtering magnetic material | Electricity | 24 | Expired |
| US7467741B2 | Method of forming a sputtering target assembly and assembly made therefrom | Chemistry; Metallurgy | 24 | Expired |
| US6872284B2 | Target and method of optimizing target profile | Chemistry; Metallurgy | 24 | Expired |
| US7063773B2 | High purity sputter targets with target end-of-life indication and method of manufacture | Electricity | 18 | Expired |
| US7425093B2 | Thermography test method and apparatus for bonding evaluation in sputtering targets | Physics | 15 | Expired |
| US7998287B2 | Tantalum sputtering target and method of fabrication | Emerging Cross-Sectional Technologies | 13 | Active |
| US4414085A | Method of depositing a high-emissivity layer | Chemistry; Metallurgy | 12 | Expired |
| US4783379A | Explosive crystallization in metal/silicon multilayer film | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8231745B2 | Sputtering target and method of fabrication | Emerging Cross-Sectional Technologies | 10 | Active |
| US6848608B2 | Method of bonding sputtering target materials | Chemistry; Metallurgy | 10 | Expired |
| US7480976B2 | Automated sputtering target production and sub systems thereof | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7561937B2 | Automated sputtering target production | Emerging Cross-Sectional Technologies | 8 | Expired |
| USH158H | Method of bonding an electrically conductive material to an electrically | General | 8 | Active |
| USD848362S1 | Photovoltaic device | General | 6 | Active |
| US8500928B2 | Sputter targets and methods of forming same by rotary axial forging | Chemistry; Metallurgy | 5 | Active |
| US8252126B2 | Sputter targets and methods of forming same by rotary axial forging | Chemistry; Metallurgy | 3 | Active |
| US8785232B2 | Photovoltaic device | Emerging Cross-Sectional Technologies | 2 | Active |
| USD943507S1 | Photovoltaic device | General | 2 | Active |
| US8497151B2 | Photovoltaic device | Emerging Cross-Sectional Technologies | 2 | Active |
| USD944724S1 | Photovoltaic device | General | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.