Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
AH

Akira Hayashi — 41 Patents

UNUnknown: 13 patents #477 of 83,584Top 1%
FCFunai Electric Co.: 5 patents #204 of 943Top 25%
MCMitsuba Electric Manufacturing Co.: 5 patents #7 of 176Top 4%
Panasonic: 3 patents #7,617 of 21,108Top 40%
LGLion Group: 3 patents #35 of 587Top 6%
Honda Motor Co.: 3 patents #6,619 of 21,052Top 35%
TCThe Lion Fat & Oil Co.: 2 patents #11 of 52Top 25%
SCSumitomo Chemical: 2 patents #1,792 of 4,033Top 45%
OMOmron: 2 patents #1,275 of 3,089Top 45%
TCToshiba Battery Co.: 1 patents #88 of 145Top 65%
Sony: 1 patents #17,262 of 25,231Top 70%
KUKyoto University: 1 patents #568 of 1,688Top 35%
LILexmark International: 1 patents #1,041 of 1,615Top 65%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
MCMitsubishi Heavy Industries Compressor: 1 patents #105 of 209Top 55%
MMMitsubishi Metal: 1 patents #45 of 150Top 30%
MIMitsui Petrochemical Industries: 1 patents #503 of 1,024Top 50%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
TLTakeda Pharmaceutical Company Limited: 1 patents #859 of 1,531Top 60%
Overall (All Time): #75,387 of 4,157,543Top 2%
41 Patents All Time

Issued Patents All Time

Showing 26–41 of 41 patents

Patent #TitleCo-InventorsDate
5128586 Color cathode ray tube gun having control grid of varying thickness Shigeya Ashizaki, Masao Natsuhara 1992-07-07
5102294 Screw pump 1992-04-07
5023144 Silver alloy foil for interconnector for solar cell Shigeru Yamamoto, Satoru Mori 1991-06-11
4828907 Diaphragm for producing sound 1989-05-09
4772177 Screw pump 1988-09-20
4770918 Diaphragm for producing sound 1988-09-13
4599275 Metal-deposited paper and method for production thereof Yutaka Hirota, Mitsuhiro Tanaka 1986-07-08
4546843 Cooling system Yutaka Koinuma, Yasuo Ikenoya 1985-10-15
4507223 High concentration surfactant slurry Tetsuo Tano 1985-03-26
4500614 Alkaline cell Akio Nagamine, Kazumasa Yoshida, Kojiro Miyasaka 1985-02-19
4497826 Antiparkinsonian agent Hirotaro Narabayashi, Tomoyoshi Kondo, Tomokazu Suzuki 1985-02-05
4411815 Process for preparing odorless alkyl ether sulfate concentrates Hideo Ando, Kyozo Kitano 1983-10-25
4337165 Amine oxide-and alkali metal chloride-containing non-corrosive liquid detergent composition Hideo Ando, Haruo Ohkouchi, Kyozo Kitano 1982-06-29
4330558 Pharmaceutical composition and method for treating peripheral orthostatic hypotension Tomokazu Suzuki, Yuichi Yamamura 1982-05-18
4261917 Process for manufacturing a highly concentrated sulfate solution or slurry Yoshio Acki, Kyozo Kitano, Toshiaki Ogoshi 1981-04-14
4213918 Process for producing clear aqueous solution of olefin sulfonic acid Haruo Ohkouchi, Kyozo Kitano, Toshiaki Ogoshi 1980-07-22