{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Applied Materials", "item": "https://www.patentleaderboard.com/company/applied-materials"}, {"@type": "ListItem", "position": 3, "name": "Michael Welch", "item": "https://www.patentleaderboard.com/inventor/fl:mi_ln:welch-20"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
MW

Michael Welch — 38 Patents

Applied Materials: 32 patents #348 of 7,310Top 5%
Shell Oil Compny: 2 patents #1,477 of 4,423Top 35%
Overall (All Time): #84,675 of 4,157,543Top 3%
38 Patents All Time
Michael Welch has been granted 38 US patents while listed as an inventor at Applied Materials. The first was granted in 1995 and the most recent in December 2006. Michael Welch ranks #84,675 of 4,157,543 US inventors in our database (top 2.0%). Patent records list Michael Welch in Chester, CA, GB.

Patents per Year

Patents granted per year, 1995 to 2006Bar chart with a peak of 7 patents in 2004.peak 71995: 1 patents19951997: 1 patents1998: 4 patents19981999: 3 patents2000: 5 patents20002001: 6 patents2002: 3 patents20022003: 4 patents2004: 7 patents20042005: 2 patents2006: 2 patents2006

Issued Patents All Time

Showing 1–25 of 38 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7147719 Double slit-valve doors for plasma processing Homgqing Shan, Paul Luscher, Evans Lee, James D. Carducci, Siamak Salimian 2006-12-12 $23,524,000
7115523 Method and apparatus for etching photomasks Brigitte Stoehr, Melisa Buie 2006-10-03 $12,847,000
6899111 Configurable single substrate wet-dry integrated cluster cleaner Paul Luscher, James D. Carducci, Siamak Salimian 2005-05-31 $12,544,000
6863835 Magnetic barrier for plasma in chamber exhaust James D. Carducci, Hamid Noorbakhsh, Evans Lee, Hongqing Shan, Siamak Salimian +1 more 2005-03-08
6822185 Temperature controlled dome-coil system for high power inductively coupled plasma systems Paul Luscher, Siamak Salimian, Rolf Guenther, Zhong Qiang Hua, Son M. Phi +1 more 2004-11-23 $17,815,000
6813534 Endpoint detection in substrate fabrication processes Zhifeng Sui, Paul Luscher, Nils Johansson 2004-11-02
6797639 Dielectric etch chamber with expanded process window James D. Carducci, Hamid Noorbakhsh, Evans Lee, Bryan Pu, Hongching Shan +3 more 2004-09-28 $20,273,000
6773544 Magnetic barrier for plasma in chamber exhaust James D. Carducci, Hamid Noorbakhsh, Evans Lee, Hongqing Shan, Siamak Salimian +1 more 2004-08-10
6774806 Monitoring an element of a plant John L. K. Bannell, David Mark Falconer, Thomas Simon Colaco Osorio 2004-08-10
6716302 Dielectric etch chamber with expanded process window James D. Carducci, Hamid Noorbakhsh, Evans Lee, Bryan Pu, Hongching Shan +3 more 2004-04-06 $31,300,000
6689249 Shield or ring surrounding semiconductor workpiece in plasma chamber Kuang-Han Ke, Bryan Pu, Hongching Shan, James C. Wang, Henry Fong +1 more 2004-02-10 $27,822,000
6647918 Double slit-valve doors for plasma processing Homgqing Shan, Paul Luscher, Evans Lee, James D. Carducci, Siamak Salimian 2003-11-18 $51,686,000
6592673 Apparatus and method for detecting a presence or position of a substrate Harald Herchen 2003-07-15 $26,921,000
6534417 Method and apparatus for etching photomasks Brigitte Stoehr 2003-03-18 $24,651,000
6513452 Adjusting DC bias voltage in plasma chamber Hongching Shan, Evans Lee, Robert Wu, Bryan Pu, Paul Luscher +2 more 2003-02-04 $18,252,000
6432259 Plasma reactor cooled ceiling with an array of thermally isolated plasma heated mini-gas distribution plates Hamid Noorbakhsh, Siamak Salimian, Paul Luscher, Hongching Shan, Kaushik Vaidya +2 more 2002-08-13 $22,156,000
6391790 Method and apparatus for etching photomasks Brigitte Stoehr 2002-05-21 $35,703,000
6387288 High selectivity etch using an external plasma discharge Claes Bjorkman, Hongching Shan 2002-05-14 $48,008,000
6284093 Shield or ring surrounding semiconductor workpiece in plasma chamber Kuang-Han Ke, Bryan Pu, Hongching Shan, James C. Wang, Henry Fong +1 more 2001-09-04 $82,822,000
6267549 Dual independent robot blades with minimal offset William R. Brown 2001-07-31 $84,886,000
6248206 Apparatus for sidewall profile control during an etch process Harald Herchen, William R. Brown, Walter R. Merry 2001-06-19 $110,909,000
6232236 Apparatus and method for controlling plasma uniformity in a semiconductor wafer processing system Hongqing Shan, Claes Bjorkman, Paul Luscher, Richard R. Mett 2001-05-15 $105,754,000
6221782 Adjusting DC bias voltage in plasma chamber Hongching Shan, Evans Lee, Robert Wu, Bryan Pu, Paul Luscher +2 more 2001-04-24 $56,824,000
6192827 Double slit-valve doors for plasma processing Homgqing Shan, Paul Luscher, Evans Lee, James D. Carducci, Siamak Salimian 2001-02-27 $52,416,000
6113731 Magnetically-enhanced plasma chamber with non-uniform magnetic field Hongching Shan, Roger Alan Lindley, Claes Bjorkman, Xue-Yu Qian, Richard W. Plavidal +4 more 2000-09-05 $156,933,000