HK

Hisao Koizumi

KT Kabushiki Kaisha Toshiba: 4 patents #6,684 of 21,451Top 35%
CI Chubu Electric Power Company, Incorporated: 2 patents #46 of 314Top 15%
Mitsubishi Electric: 2 patents #11,187 of 25,717Top 45%
SC Sakai Chemical Industry Co.: 2 patents #66 of 227Top 30%
TE Tokyo Shibaura Electric: 1 patents #96 of 337Top 30%
Overall (All Time): #535,330 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
12281019 Boron-containing amorphous silica powder and method of producing same Yasuyuki Murakami, Satsuki Motoishi, Satoshi Komori, Hironobu OGATA 2025-04-22
11020331 Cosmetic Momoko Ishikawa, Nanae Ogata, Kenji Mori 2021-06-01
5864374 Method and apparatus for image generation Toshio Ito, Yoshisuke Ohtsuru, Takio Okuda, Yasuhito Myoi, Toshimasa Tomoda +15 more 1999-01-26
5663775 Video projector with luminance and chrominance optical modulation LCD's Hiroshi Kawamura, Yoshisuke Ohtsuru 1997-09-02
5203399 Heat transfer apparatus 1993-04-20
5006689 Vacuum insulated storage-type electric water heater having an external bubble pump heating unit Yasuhiko Kurachi, Kazumi Mori 1991-04-09
4959526 Storage type electric water heater having a closed circulation loop with a bubble pump Yasuhiko Kurachi, Kazumi Mori 1990-09-25
4818845 Storage type electric water heater having a closed circulation loop provided with a bubble pump Yoshihisa Oishi 1989-04-04
4282860 Hot air type solar heat-collecting apparatus Yoshinosuke Kawada, Koichi Matsui 1981-08-11