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

Kotaro Hayashi — 44 Patents

Toyota: 25 patents #810 of 26,838Top 4%
DIDaikin Industries: 11 patents #295 of 2,957Top 10%
ICIbiden Co.: 4 patents #206 of 730Top 30%
FUFujikura: 1 patents #788 of 1,407Top 60%
Honda Motor Co.: 1 patents #12,035 of 21,052Top 60%
REResonac: 1 patents #191 of 474Top 45%
Osaka, JP: #661 of 24,344 inventorsTop 3%
Overall (All Time): #66,838 of 4,157,543Top 2%
44 Patents All Time
Kotaro Hayashi has been granted 44 US patents while listed as an inventor at Toyota. The first was granted in 1989 and the most recent in November 2025. Kotaro Hayashi ranks #66,838 of 4,157,543 US inventors in our database (top 1.6%). Patent records list Kotaro Hayashi in Osaka, JP.

Patents per Year

Patents granted per year, 1989 to 2025Bar chart with a peak of 7 patents in 2012.peak 71989: 1 patents19891990: 2 patents2001: 1 patents20012002: 1 patents2003: 1 patents20032007: 2 patents2008: 3 patents20082011: 4 patents2012: 7 patents20122013: 2 patents2014: 1 patents20142015: 3 patents2016: 2 patents20162017: 1 patents2022: 1 patents20222023: 5 patents2024: 5 patents20242025: 2 patents2025

Issued Patents All Time

Showing 1–25 of 44 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
D1101654 Wheel for an automobile 2025-11-11
12272789 Electrolyte, electrochemical device, lithium ion secondary battery, and module Yoshiko Kuwajima, Akiyoshi Yamauchi, Yuuki Suzuki, Hisako Nakamura, Takaya Yamada +4 more 2025-04-08
12107225 Electrolyte solution, electrochemical device, lithium ion secondary battery, module and compound Masakazu Kinoshita, Tomoya Hidaka, Yoshiko Kuwajima, Yuuki Suzuki, Akiyoshi Yamauchi +3 more 2024-10-01
12002926 Electrolyte, electrochemical device, lithium ion secondary battery, and module Masakazu Kinoshita, Yuuki Suzuki, Shigeaki Yamazaki, Kenzou Takahashi, Tomoya Hidaka +2 more 2024-06-04
11996522 Electrolyte, electrochemical device, lithium-ion secondary battery, and module Yoshiko Kuwajima, Tomoya Hidaka, Masakazu Kinoshita, Yuuki Suzuki, Toshiharu SHIMOOKA +6 more 2024-05-28
11945776 Electrolyte, electrochemical device, lithium ion secondary battery, and module Yoshiko Kuwajima, Akiyoshi Yamauchi, Hisako Nakamura, Toshiharu SHIMOOKA, Takaya Yamada +3 more 2024-04-02
11916195 Electrolyte solution, electrochemical device, lithium ion secondary battery, and module Masakazu Kinoshita, Tomoya Hidaka, Toshiharu SHIMOOKA, Shigeaki Yamazaki, Hisako Nakamura +5 more 2024-02-27
11781092 Composition, and method for cleaning adhesive polymer 2023-10-10
11718599 Method for producing cyclic carbonate having unsaturated group, and novel cyclic carbonate Akiyoshi Yamauchi, Yuuki Suzuki, Yoshihiro Yamamoto, Yosuke KISHIKAWA 2023-08-08
11664534 Electrolytic solution, electrochemical device, lithium ion secondary battery, and module Hisako Nakamura, Takaya Yamada, Shigeaki Yamazaki, Yuuki Suzuki, Kenzou Takahashi +1 more 2023-05-30
11626618 Electrolyte for lithium ion secondary battery, lithium ion secondary battery, and module Hisako Nakamura, Shigeaki Yamazaki, Kenzou Takahashi, Yuuki Suzuki, Akiyoshi Yamauchi 2023-04-11
11594761 Electrolytic solution, electrochemical device, lithium-ion secondary cell, and module Yoshiko Kuwajima, Hisako Nakamura, Takaya Yamada, Yuuki Suzuki, Shigeaki Yamazaki +2 more 2023-02-28
11420877 Lithium fluorosulfonate production method Yuuki Suzuki, Akiyoshi Yamauchi, Yoshihiro Yamamoto, Yosuke KISHIKAWA, Tatsuya Ohtsuka +2 more 2022-08-23
9534710 Heat releasing pipe Takumi Domae, Kenzo Saiki 2017-01-03
9517559 Robot control system, robot control method and output control method Koji Kawabe, Taro Yokoyama, Takayuki Kanda, Satoru Satake, Takamasa Iio +1 more 2016-12-13 $1,271,000
9416716 Control apparatus for an internal combustion engine Tsuyoshi Obuchi 2016-08-16 $1,236,000
9199197 Exhaust gas purification apparatus for internal combustion engine Kohei Yoshida, Yasuaki Nakano, Tadashi Watanabe, Takamitsu Asanuma 2015-12-01 $863,000
9188251 Exhaust pipe Takumi Domae, Kenzo Saiki 2015-11-17
9138736 Exhaust purifying catalyst Satoshi Nagao, Hideaki Suzuki 2015-09-22 $1,194,000
8722786 Paint composition for heat releasing products Takumi Domae, Kenzo Saiki 2014-05-13
8574416 Method for producing exhaust pipe Takumi Domae, Kenzo Saiki 2013-11-05
8539755 Exhaust purification device of internal combustion engine Tetsuya Yamashita 2013-09-24 $2,376,000
8307639 Exhaust purification device of internal combustion engine Hiromasa Nishioka, Shinya Hirota, Takamitsu Asanuma, Kohei Yoshida, Hiroshi Otsuki 2012-11-13 $877,000
8307638 Exhaust gas purification system for internal combustion engine Nobumoto Ohashi, Atsushi Hayashi, Masahide Iida 2012-11-13 $877,000
8276369 Exhaust purification system of internal combustion engine Hiromasa Nishioka, Shinya Hirota, Takamitsu Asanuma, Kohei Yoshida, Hiroshi Otsuki 2012-10-02 $945,000