Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Douglas R. McAllister — 24 Patents

Applied Materials: 24 patents #516 of 7,310Top 8%
Pleasanton, CA: #284 of 3,062 inventorsTop 10%
California: #23,266 of 386,348 inventorsTop 7%
Overall (All Time): #168,038 of 4,157,543Top 5%
24 Patents All Time
Douglas R. McAllister has been granted 24 US patents while listed as an inventor at Applied Materials. The first was granted in 2001 and the most recent in October 2025. Douglas R. McAllister ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list Douglas R. McAllister in Pleasanton, CA, US.

Patents per Year

Patents granted per year, 2001 to 2024Bar chart with a peak of 3 patents in 2023.peak 32001: 1 patents20012002: 1 patents2007: 1 patents20072008: 1 patents2009: 2 patents20092011: 2 patents2013: 2 patents20132015: 1 patents2016: 1 patents20162018: 1 patents2020: 2 patents20202021: 2 patents2022: 1 patents20222023: 3 patents2024: 2 patents2024

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12456638 Methods and systems for temperature control for a substrate Nicholas Michael Bergantz, Jeffrey C. Hudgens, Henry Jay Lee 2025-10-28
12165905 Process kit enclosure system Helder Lee, Nicholas Michael Kopec, Leon Volfovski, Andreas Schmid, Jeffrey C. Hudgens +2 more 2024-12-10 $69,596,000
12159795 Enclosure system having walls comprising sidewalls and radio-frequency identifier holder coupled to rear wall John C. Menk, Rachel Sara Stolzman 2024-12-03 $97,002,000
11850703 Method of forming retaining ring with shaped surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2023-12-26 $30,871,000
11842917 Process kit ring adaptor Leon Volfovski, Andreas Schmid, Denis M. Koosau, Nicholas Michael Kopec, Steven E. Babayan +3 more 2023-12-12 $82,062,000
11577361 Retaining ring with shaped surface and method of forming Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2023-02-14 $35,617,000
11260500 Retaining ring with shaped surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2022-03-01 $41,046,000
11211269 Multi-object capable loadlock system Andrew Paul Harbert, Michael C Kuchar, Nicholas Michael Bergantz, Leon Volfovski, Sivakumar Ramalingam +1 more 2021-12-28 $93,125,000
10964584 Process kit ring adaptor Leon Volfovski, Andreas Schmid, Denis M. Koosau, Nicholas Michael Kopec, Steven E. Babayan +3 more 2021-03-30 $120,425,000
10766117 Retaining ring with shaped surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2020-09-08 $22,964,000
10741428 Semiconductor processing chamber Aaron Muir Hunter, Mehran Behdjat, Niraj Merchant, Dongming Iu, Kong CHAN +1 more 2020-08-11 $71,596,000
9937601 Retaining ring with Shaped Surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2018-04-10 $134,735,000
9462636 RTP lamp base with removal features Joseph M. Ranish 2016-10-04 $14,162,000
9186773 Retaining ring with shaped surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2015-11-17 $15,900,000
8585468 Retaining ring with shaped surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2013-11-19 $10,370,000
8523639 Self cleaning and adjustable slurry delivery arm Jamie Stuart Leighton, Abhijit Desai 2013-09-03 $10,482,000
8066551 Retaining ring with shaped surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2011-11-29 $8,648,000
7927190 Retaining ring with shaped surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Jian Lin, Stacy Meyer +12 more 2011-04-19 $9,957,000
7530153 Attaching components of a carrier head Trung T. Doan, Jeffrey P. Schmidt, Stacy Meyer 2009-05-12 $30,677,000
7503837 Composite retaining ring Jeonghoon Oh, Hung Chih Chen, Thomas Brezoczky, David Datong Huo 2009-03-17 $10,205,000
7344434 Retaining ring with shaped surface Hung Chih Chen, Steven M. Zuniga, Charles C. Garretson, Stacy Meyer, Trung T. Doan +5 more 2008-03-18 $36,315,000
7186171 Composite retaining ring Jeonghoon Oh, Hung Chih Chen, Thomas Brezoczky, David Datong Huo 2007-03-06 $17,668,000
6410889 Method and apparatus for reducing contamination in a wafer loadlock of a semiconductor wafer processing system Matthew F. Davis, David Evans 2002-06-25 $39,568,000
6323463 Method and apparatus for reducing contamination in a wafer loadlock of a semiconductor wafer processing system Matthew F. Davis, David Evans 2001-11-27 $67,261,000