Inventor

HIRAYAMA NAOFUMI

JP4 patents

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

PIONEER CORP

3 patents

US6876871B2Apr 5, 2005

Portable information terminal

PIONEER CORP15 citations81

US6807276B2Oct 19, 2004

Portable telephone

PIONEER CORP11 citations70

US7751970B2Jul 6, 2010

Information providing apparatus, information providing method, and computer product

PIONEER CORP3 citations60

PIONEER DESIGN CORP

1 patent

US6882326B2Apr 19, 2005

Portable information terminal

PIONEER DESIGN CORP123 citations93