Inventor · Shizuoka, JP

Masashi Hasegawa

31Patents
13h-index
51Co-inventors
84Inventor score

Filing activity: Sep 6, 1991 → Nov 26, 2019

Most-cited inventions

PatentTitleAreaCited byStatus
US5694295A Heat pipe and process for manufacturing the same Mechanical Engineering; Lighting; Heating 76 Expired
US7706699B2 Toner container and image forming apparatus Physics 75 Active
US7822371B2 Toner container and image forming apparatus Physics 71 Active
US7702262B2 Toner container including a container body with a gripper at the end thereof, and associated method Physics 60 Active
US7853184B2 Toner container and image forming apparatus Physics 56 Active
US7991334B2 Toner container and image forming apparatus Physics 49 Active
US8126375B2 Toner container and image forming apparatus Physics 43 Active
US8460010B2 Contact and electrical connecting apparatus Electricity 36 Active
US6701112B2 Toner bottle and electrophotographic apparatus using the same Emerging Cross-Sectional Technologies 27 Expired
US9510682B2 Nestable chair Human Necessities 23 Active
US6122166A Personal computer cooling device having hinged heat pipe Physics 20 Expired
US8244163B2 Toner container and image forming apparatus Physics 17 Active
US8050597B2 Toner container having a gear portion and image forming apparatus Physics 13 Active
US6907214B2 Toner bottle and electrophotographic apparatus using the same Emerging Cross-Sectional Technologies 10 Expired
US9402478B2 Rocking chair and spring unit used therein Human Necessities 6 Active
US8973759B2 Sieving device, sieving device for developing device, and powder-charging device Physics 5 Active
US8929776B2 Nozzle, image forming apparatus, and method of deriving powder Physics 5 Active
US8525539B2 Electrical connecting apparatus and testing system using the same Physics 4 Active
US5143983A Heat resistant polyamide film Chemistry; Metallurgy 3 Expired
US8253433B2 Testing apparatus for integrated circuit Physics 3 Active
US8233818B2 Inner cap for toner container and toner container Physics 3 Active
US8532522B2 Toner cartridge Physics 3 Active
US9454099B2 Toner container including a lid member pulled out in an inclined direction Physics 2 Active
US8934816B2 Sieve device, powder transporting unit, image forming apparatus, and method of transporting powder Physics 2 Active
US8575481B2 Electronic apparatus storing container and method for assembling electronic apparatus storing container Emerging Cross-Sectional Technologies 2 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.