Try all different Business Directories offered by Whitepages.jp
Every Engine has different results,
Most companies are listed in serveral directories
but the results are not the same ...
and order them directly (example Sony Cameras, Panasonic Radios, Pokemon Toys, Video Games)
Products via Amazon.com `
Video about the Amazon Pop Up Store @ Cremerie de Paris,
one of the World's most famous Brand Expo locations.
Since 1671 Cremerie de Paris is a Telecom Hotspot,
that started with Post Horses carrying mail
a long time before becoming the home of the Japaneese Whitepages.
Yellow Pages B2C
Business to Consumers
Companies froviding Products or Sevices for End Users
B2C Town Pages by NTT (Japanese only)
B2C Directory NTT-JP
Yellow Pages B2B
Business to Business
Companies providing Products for Professionals
(example Manufacturer of Kitchens)
search through the government
Japan Gov Search
this search engine goes through
all the Japanese ministeries,
maybe the company you are looking for
has been mentioned.
search in another country
Phone Book of the World.com
Annuaire du Monde.com
maybe the person you are looking for has moved
and can be cound through the directory of another country
good luck ...