Inventor
KOJIMA TAKAFUMI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “KOJIMA TAKAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
7 patentsUS5799252AAug 25, 1998
Radio communication system with plurality of wired lines
HITACHI LTD86 citations95
US5802453ASep 1, 1998
Radio paging transmitter which adjusts its transmission time based on detection of its own transmission delay
HITACHI LTD11 citations69
US4145577AMar 20, 1979
Ringing control apparatus
HITACHI LTD10 citations69
US4447679AMay 8, 1984
Subscriber line testing system
HITACHI LTD8 citations68
US5751935AMay 12, 1998
Radio paging system
HITACHI LTD6 citations59
US4392026AJul 5, 1983
Subscriber line testing system
HITACHI LTD6 citations54
US4075431AFeb 21, 1978
Speech path system
HITACHI LTD1 citations48
TACHI S CO
2 patentsUS11072268B2Jul 27, 2021
Head-rest of a car seat
TACHI S CO0 citations58
US9840175B2Dec 12, 2017
Foaming die device adapted to effect foaming in trim cover assembly integrally to form headrest, and foaming process for forming headrest by effecting foaming in trim cover assembly integrally, using the foaming die device
TACHI S CO0 citations40
INTER UNIV RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES
2 patentsUS12549133B2Feb 10, 2026
Isolator
INTER UNIV RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES0 citations41
US10680567B2Jun 9, 2020
Low-noise microwave amplifier utilizing superconductor-insulator-superconductor junction
INTER UNIV RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES0 citations35