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Support : Publications : Chronolog Archives : March/April 2004 From the Experts... Have you ever searched a patent database for a Japanese assignee and were surprised because the number of hits found is much lower than you thought? Typically, this means that the term you are looking for is misspelled or maybe you have picked a lesser-known name for the company. What compounds this problem is that many Japanese companies use English versions of their first name but leave the other parts in Japanese, such as Mitsubishi Heavy Industries, which is also listed as Mitsubishi Jukogyo. But how do you find alternate spellings for Japanese companies? One way is to use Derwent World Patents Index's assignee coding to locate those difficult-to-find company names. For example, EXPAND the patent assignee (PA=) in File 351 (Derwent WPI) and look at the assignee codes in parentheses after the assignee names as in the following example.
Note that there are many more hits in this case for Mitsubishi Denki compared to Mitsubishi Electric. These terms could be used in other databases that do not have assignee codes as follows:
In this example, there were many more hits for Mitsubishi Denki than for Mitsubishi Electric. The use of Derwent WPI's assignee coding is a convenient way to find alternate names for companies, especially companies with Japanese names that may or may not be translated.
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