Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
TI

Tetsuya Ishikawa — 252 Patents

Applied Materials: 89 patents #54 of 7,310Top 1%
Canon: 38 patents #1,219 of 19,416Top 7%
Honda Motor Co.: 20 patents #634 of 21,052Top 4%
KMKonica Minolta: 16 patents #84 of 2,718Top 4%
Nichia: 14 patents #120 of 1,531Top 8%
KMKonica Minolta: 12 patents #131 of 1,361Top 10%
SCSokudo Co.: 7 patents #7 of 74Top 10%
NINgk Insulators: 5 patents #566 of 2,083Top 30%
Apple: 5 patents #5,490 of 18,612Top 30%
Hitachi: 5 patents #7,560 of 28,497Top 30%
HCHitachi Engineering Co.: 5 patents #21 of 572Top 4%
YEYokogawa Electric: 5 patents #137 of 1,441Top 10%
HCHitachi Ibaraki Business Engineering Co.: 5 patents #1 of 9Top 15%
JLJapan Aviation Electronics Industry, Limited: 4 patents #242 of 728Top 35%
JTJtekt: 4 patents #427 of 1,969Top 25%
TCTs Tech Co.: 3 patents #188 of 561Top 35%
TCToshiba Carrier: 3 patents #14 of 163Top 9%
KUKyoto University: 2 patents #286 of 1,688Top 20%
Asml Netherlands B.V.: 2 patents #1,484 of 3,192Top 50%
KOKonica: 2 patents #962 of 1,958Top 50%
SCSumitomo Bakelite Co.: 2 patents #227 of 790Top 30%
SHShiroki: 1 patents #86 of 172Top 50%
NCNgk Ceramic Device Co.: 1 patents #9 of 20Top 45%
Bridgestone: 1 patents #1,586 of 2,860Top 60%
ACArai Seisakusho Co: 1 patents #1 of 39Top 3%
AKAisan Kogyo Kabushiki Kaisha: 1 patents #344 of 642Top 55%
Toyota: 1 patents #15,486 of 26,838Top 60%
Overall (All Time): #1,958 of 4,157,543Top 1%
252 Patents All Time
Tetsuya Ishikawa has been granted 252 US patents while listed as an inventor at Applied Materials. The first was granted in 1994 and the most recent in November 2025. Tetsuya Ishikawa ranks #1,958 of 4,157,543 US inventors in our database (top 0.05%). Patent records list Tetsuya Ishikawa in Kasugai, CA, JP.

Issued Patents All Time

Showing 1–25 of 252 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12479003 Masking member, and method for coating hollow member 2025-11-25
12091749 Method for epitaxially depositing a material on a substrate by flowing a process gas across the substrate from an upper gas inlet to an upper gas outlet and flowing a purge gas from a lower gas inlet to a lower gas outlet Swaminathan Srinivasan, Matthias Bauer, Manjunath Subbanna, Ala Moradian, Kartik Shah +4 more 2024-09-17 $46,375,000
12070936 Image recording apparatus with heating of recording medium on which recording has been performed and with branched conveying path Takashi Abe, Tsuyoshi Saeki, Yoshiyuki Kurita, Yumi Mukoyama 2024-08-27
12066466 Current measurement device for measuring currents flowing in mutually opposite directions Kazuma Takenaka, Minako TERAO, Kotaro Ogawa, Saki Kobako, Naoki Noguchi 2024-08-20
12060651 Chamber architecture for epitaxial deposition and advanced epitaxial film applications Swaminathan Srinivasan, Kartik Shah, Ala Moradian, Manjunath Subbanna, Matthias Bauer +2 more 2024-08-13 $69,975,000
12018372 Gas injector for epitaxy and CVD chamber Swaminathan Srinivasan, Matthias Bauer, Ala Moradian, Manjunath Subbanna, Kartik Shah +4 more 2024-06-25 $57,214,000
12007002 Power transmission device 2024-06-11 $300,000
11948925 Light emitting device and method of producing light emitting device Takuya Nakabayashi, Tadaaki Ikeda 2024-04-02
D1016264 Outdoor unit of air conditioner Masao Isshiki 2024-02-27
11885764 Gas sensor Yusuke Watanabe 2024-01-30
11664356 Light emitting device Tadaaki Ikeda, Yuki Kageyama, Toshifumi Imura 2023-05-30
11652192 Light-emitting device Takuya Nakabayashi, Tomokazu Maruyama 2023-05-16
11500330 Image forming apparatus having developing device with air suction device Shota Sakurai, Kei Yuasa, Takenobu Kimura 2022-11-15
11495587 Light emitting device and method of producing light emitting device Takuya Nakabayashi, Tadaaki Ikeda 2022-11-08
11460794 Image recording apparatus Yumi Mukoyama, Tsuyoshi Saeki, Yoshiyuki Kurita, Takashi Abe 2022-10-04 $49,000
11415914 Image recording apparatus Tsuyoshi Saeki, Yoshiyuki Kurita, Takashi Abe, Yumi Mukoyama 2022-08-16 $36,000
11411144 Light-emitting device Takuya Nakabayashi, Tomokazu Maruyama 2022-08-09
11360124 Current measuring device, current measuring method, and non-transitory computer-readable storage medium Kazuma Takenaka, Minako TERAO, Kotaro Ogawa, Saki Kobako 2022-06-14
11345132 Optical sheet and optical component Takuya Oyama 2022-05-31 $16,893,000
11271210 Cathode active material with silicon carbide additive Mona Shirpour, Sally S. Lou, Juchuan Li, Shawn W. Snyder 2022-03-08 $181,377,000
11264542 Light-emitting device Takuya Nakabayashi, Tomokazu Maruyama 2022-03-01
11215584 Material defect detection device, material defect detection system, material defect detection method, and non-transitory computer readable storage medium Hideki Yoshida 2022-01-04
11195977 Light emitting device Takuya Nakabayashi 2021-12-07
11119260 Optical sheet and optical component Takuya Oyama 2021-09-14
D930857 Light-emitting unit Takuya Nakabayashi, Tomokazu Maruyama 2021-09-14