P

Inventor

KOIZUMI HISAO

12 patents
⚠️ This page may combine multiple inventors who share the name “KOIZUMI HISAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOKYO SHIBAURA ELECTRIC CO

4 patents
US4137898AFeb 6, 1979

Air type solar heating system

TOKYO SHIBAURA ELECTRIC CO43 citations89
US4108155AAug 22, 1978

Hot air type solar heat-collecting apparatus

TOKYO SHIBAURA ELECTRIC CO41 citations88
US4282860AAug 11, 1981

Hot air type solar heat-collecting apparatus

TOKYO SHIBAURA ELECTRIC CO17 citations72
US4135491AJan 23, 1979

Dwellings equipped with a room-heating device and hot water feeder based on solar heat

TOKYO SHIBAURA ELECTRIC CO7 citations69

TOSHIBA KK

2 patents
US5203399AApr 20, 1993

Heat transfer apparatus

TOSHIBA KK196 citations98
US4818845AApr 4, 1989

Storage type electric water heater having a closed circulation loop provided with a bubble pump

TOSHIBA KK27 citations89

MITSUBISHI ELECTRIC CORP

2 patents
US5864374AJan 26, 1999

Method and apparatus for image generation

MITSUBISHI ELECTRIC CORP42 citations91
US5663775ASep 2, 1997

Video projector with luminance and chrominance optical modulation LCD's

MITSUBISHI ELECTRIC CORP14 citations72

CHUBU ELECTRIC POWER

2 patents
US5006689AApr 9, 1991

Vacuum insulated storage-type electric water heater having an external bubble pump heating unit

CHUBU ELECTRIC POWER39 citations89
US4959526ASep 25, 1990

Storage type electric water heater having a closed circulation loop with a bubble pump

CHUBU ELECTRIC POWER20 citations78

SAKAI CHEMICAL INDUSTRY CO

2 patents
US12281019B2Apr 22, 2025

Boron-containing amorphous silica powder and method of producing same

SAKAI CHEMICAL INDUSTRY CO0 citations56
US11020331B2Jun 1, 2021

Cosmetic

SAKAI CHEMICAL INDUSTRY CO0 citations44