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

Mari Ichimura — 42 Patents

Sony: 42 patents #653 of 25,231Top 3%
Tokyo, JP: #2,631 of 90,295 inventorsTop 3%
Overall (All Time): #72,062 of 4,157,543Top 2%
42 Patents All Time
Mari Ichimura has been granted 42 US patents while listed as an inventor at Sony. The first was granted in 2000 and the most recent in January 2025. Mari Ichimura ranks #72,062 of 4,157,543 US inventors in our database (top 1.7%). Patent records list Mari Ichimura in Tokyo, JP.

Issued Patents All Time

Showing 1–25 of 42 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12191569 Wave control medium, wave control element, wave control device, and method for manufacturing wave control medium Eri Igarashi, Nobuhiko Umezu, Atsushi Yamada 2025-01-07
10727429 Insulating material, electronic device and imaging apparatus Toshiki Moriwaki 2020-07-28 $873,000
8753898 Microbead analysis method and microbead analyzer Kenzo Machida, Noriyuki Kishii, Kazumine Ito, Takuya Kishimoto, Naohisa Sakamoto 2014-06-17 $200,000
8546068 Method for fabricating microbeads and microbeads Kenzo Machida, Noriyuki Kishii, Masanobu Tanaka 2013-10-01 $137,000
8548221 Microbead automatic recognition method and microbead Noriyuki Kishii, Kenzo Machida 2013-10-01 $137,000
8409706 Preparation process of microbeads, and microbeads Kenzo Machida, Noriyuki Kishii, Masanobu Tanaka 2013-04-02 $106,000
8357821 Aromatic amine compound, organic electroluminescent element including the same, and display device including organic electroluminescent element Yoshihisa Miyabayashi 2013-01-22 $187,000
8200000 Microbead automatic recognition method and microbead Noriyuki Kishii, Kenzo Machida 2012-06-12 $75,000
8063200 Labeled compound and detection method using the same 2011-11-22 $116,000
8025986 Organic electroluminescent element and light-emitting device or display device incorporated therewith Tadashi Ishibashi, Shinichiro Tamura, Naoyuki Ueda 2011-09-27 $209,000
7524991 Organic electroluminescent devices, aminostyrylnaphthalene compounds and synthesis intermediates thereof, and production processes of the same Tadashi Ishibashi, Shinichiro Tamura 2009-04-28 $626,000
7402344 Organic electroluminescent devices and aminostyrylnaphthalene compounds Tadashi Ishibashi, Shinichiro Tamura 2008-07-22 $1,900,000
7255935 Organic electroluminescent element and luminescent apparatus employing the same Tadashi Ishibashi, Naoyuki Ueda, Shinichiro Tamura 2007-08-14 $1,152,000
7244516 Organic electroluminescence device Yukinari Sakamoto, Mitsuhiro Kashiwabara, Shinichiro Tamura 2007-07-17 $1,369,000
7196225 Bis(aminostyryl) anthracene compound, synthesis intermediate thereof, and process for production thereof Tadashi Ishibashi, Shinichiro Tamura 2007-03-27 $1,159,000
7087310 Bis (aminostyryl) naphthalene compound, synthesis intermediate thereof, and process for production thereof Tadashi Ishibashi, Shinichiro Tamura 2006-08-08 $748,000
7049470 Bis (aminostyryl) anthracene compound, synthesis is intermediate thereof, and process for production thereof Tadashi Ishibashi, Shinichiro Tamura 2006-05-23 $847,000
7022868 Aminostyrylanthracene compound, synthetic intermediate thereof, and process for production thereof Tadashi Ishibashi, Shinichiro Tamura 2006-04-04 $960,000
6979746 (1,4-phenylene)bis(methylene) phosphonic acid esters and (1,4-phenylene)bis(methylene) triphenyl phosphonium salt compounds Shinichiro Tamura, Tadashi Ishibashi, Ichinori Takada 2005-12-27 $601,000
6916552 Organic electroluminescent device and display unit Naoyuki Ueda, Ichinori Takada, Tetsuo Shibanuma, Shinichiro Tamura 2005-07-12 $587,000
6906217 Aminostyrylanthracene compound, synthetic intermediate thereof, and process for production thereof Tadashi Ishibashi, Shinichiro Tamura 2005-06-14 $771,000
6897341 Bis(aminostyryl)naphthalene compound, synthesis intermediate thereof, and process for production thereof Tadashi Ishibashi, Shinichiro Tamura 2005-05-24 $489,000
6800382 Organic electroluminescent device Tadashi Ishibashi, Shinichiro Tamura 2004-10-05 $581,000
6790975 Aminostyrylanthracene compound, synthetic intermediate thereof, and process for the production thereof Tadashi Ishibashi, Shinichiro Tamura 2004-09-14 $752,000
6790974 Bis(aminostyryl) naphthalene compound, synthesis intermediate thereof, and process for production thereof Tadashi Ishibashi, Shinichiro Tamura 2004-09-14 $752,000