Issued Patents 2011
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8080479 | Plasma process uniformity across a wafer by controlling a variable frequency coupled to a harmonic resonator | Kenneth S. Collins, Hiroji Hanawa, Kartik Ramaswamy, Douglas A. Buchberger, Jr., Shahid Rauf +10 more | 2011-12-20 |
| 8076247 | Plasma process uniformity across a wafer by controlling RF phase between opposing electrodes | Kenneth S. Collins, Hiroji Hanawa, Kartik Ramaswamy, Douglas A. Buchberger, Jr., Shahid Rauf +10 more | 2011-12-13 |
| 8074677 | Method and apparatus for controlling gas flow to a processing chamber | Ezra Robert Gold, Richard Fovell, Jared Ahmad Lee, Bruno Geoffrion, Douglas A. Buchberger, Jr. +1 more | 2011-12-13 |
| 7994872 | Apparatus for multiple frequency power application | Steven C. Shannon, Jang-Gyoo Yang, Matthew L. Miller, Kartik Ramaswamy | 2011-08-09 |
| 7988815 | Plasma reactor with reduced electrical skew using electrical bypass elements | Shahid Rauf, Kenneth S. Collins, Kallol Bera, Kartik Ramaswamy, Hiroji Hanawa +5 more | 2011-08-02 |
| 7975558 | Method and apparatus for gas flow measurement | Jared Ahmad Lee, Ezra Robert Gold, Chunlei Zhang, Richard Fovell | 2011-07-12 |
| 7968469 | Method of processing a workpiece in a plasma reactor with variable height ground return path to control plasma ion density uniformity | Kenneth S. Collins, Hiroji Hanawa, Kartik Ramaswamy, Douglas A. Buchberger, Jr., Shahid Rauf +10 more | 2011-06-28 |
| 7955646 | Elimination of flow and pressure gradients in low utilization processes | Andreas Hegedus, Satheesh Kuppurao | 2011-06-07 |
| 7884025 | Plasma process uniformity across a wafer by apportioning ground return path impedances among plural VHF sources | Kenneth S. Collins, Hiroji Hanawa, Kartik Ramaswamy, Douglas A. Buchberger, Jr., Shahid Rauf +10 more | 2011-02-08 |
| 7879731 | Improving plasma process uniformity across a wafer by apportioning power among plural VHF sources | Kenneth S. Collins, Hiroji Hanawa, Kartik Ramaswamy, Douglas A. Buchberger, Jr., Shahid Rauf +10 more | 2011-02-01 |