KN

Keiichi Narita

CA Cataler: 25 patents #5 of 277Top 2%
IC Idemitsu Kosan Co.: 13 patents #105 of 1,237Top 9%
TO Toyota: 9 patents #3,216 of 26,838Top 15%
DC Daihatsu Motor Co.: 7 patents #7 of 248Top 3%
HC Hokko Chemical Industry Co.: 2 patents #30 of 157Top 20%
TL Toyota Central R&D Labs: 1 patents #823 of 1,657Top 50%
PO Pokka: 1 patents #18 of 45Top 40%
SA Santoku: 1 patents #36 of 83Top 45%
Overall (All Time): #74,972 of 4,157,543Top 2%
41
Patents All Time

Issued Patents All Time

Showing 25 most recent of 41 patents

Patent #TitleCo-InventorsDate
12410374 Lubricating oil composition, lubrication method, and transmission 2025-09-09
12303873 Exhaust gas purification catalyst Tatsuya Ohashi, Kohei Takasaki, Yu Onohara 2025-05-20
12275910 Lubricating oil composition Akio Kojima, Yukio Yoshida, Kenichi Ogata, Shota KATO 2025-04-15
11946013 Lubricant composition Yasuhito NAKAHARA, Hiroyuki TATSUMI, Koki Ito 2024-04-02
11224840 Exhaust gas purification catalyst Hiromasa Suzuki, Masahide Miura, Yoshinori Saito, Satoru Katoh, Toshitaka Tanabe +5 more 2022-01-18
11162049 Lubricant composition, mechanical device including lubricant composition, and method of producing lubricant composition 2021-11-02
11084022 Pd-supporting Zr-based composite oxide Kyosuke Murakami, Satoshi Matsueda, Michio Tanaka, Tadatoshi Murota, Shigeru Ono +1 more 2021-08-10
11072759 Lubricating oil composition, lubrication method, and transmission 2021-07-27
10920162 Lubricant composition, lubricating method and transmission 2021-02-16
10731532 Exhaust gas purification catalyst Hiromasa Suzuki, Masahide Miura, Yoshinori Saito, Satoru Katoh, Toshitaka Tanabe +5 more 2020-08-04
10539056 Exhaust gas purification catalyst Hiromasa Suzuki, Masahide Miura, Yoshinori Saito, Satoru Katoh, Toshitaka Tanabe +5 more 2020-01-21
10413895 Exhaust gas purification catalyst Hiromasa Suzuki, Masahide Miura, Yoshinori Saito, Satoru Katoh, Toshitaka Tanabe +5 more 2019-09-17
10407642 Lubricant composition Masato YOKOMIZO 2019-09-10
10323554 Exhaust gas purification catalyst Hiromasa Suzuki, Masahide Miura, Yoshinori Saito, Satoru Katoh, Toshitaka Tanabe +5 more 2019-06-18
10307736 Exhaust gas purification catalyst Yoshinori Saito, Hiromasa Suzuki, Tatsuya Ohashi, Ryota Nakashima, Mitsuyoshi Okada +2 more 2019-06-04
10159934 Exhaust gas purification catalyst Ichiro Kitamura, Yasutaka Nomura, Ryota Onoe, Yuta Morishita, Junji Kuriyama +8 more 2018-12-25
10112181 Catalyst for purification of exhaust gas, method for producing the same, and method for purification of exhaust gas using the same Satoru Katoh, Toshitaka Tanabe, Masahide Miura, Hiromasa Suzuki, Hiroaki Naito +3 more 2018-10-30
10011802 Lubricating oil composition Atsushi Nara 2018-07-03
9849443 Exhaust gas purification catalyst Takahiro Harada, Michio Tanaka, Hironobu Kunioku, Ryota Nakashima 2017-12-26
9574157 Lubricant composition Toshiaki Iwai 2017-02-21
9506010 Lubricant composition and continuously-variable transmission 2016-11-29
9358535 Exhaust gas-purifying catalyst Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Asuka Hori, Masahiro Kusaka 2016-06-07
9347018 Lubricating oil composition for automatic transmission 2016-05-24
9295945 Exhaust gas-purifying catalyst Satoshi Matsueda, Akimasa Hirai, Kenichi Taki, Asuka Hori, Masahiro Kusaka 2016-03-29
9029305 Lubricant composition and continuously variable transmission 2015-05-12