FYI - Standard (the company) was took over by Osann, which was then taken over by Singer. White eventually merged with Viking, and finally Singer, Pfaff and Viking all ended up under the same cooperate roof.
One thing very typical of many Japanese post war machines - they used "names" that would be familiar with US customers - anything they could get by with, I've seen Davis, Standard, Howe and variations of others. So any US company that was defunct was fair game for them.