This is the 8895th most frequent Japanese word.
正洋
"正洋" is a Japanese name that can mean "correct ocean" or "justice/ocean," depending on the context.
Here, '正洋' is used as a proper noun representing a person's name.
正洋は優秀な学生です。
Masahiro is an excellent student.
In this case, '正洋' is used politely referring to someone named Masahiro, with the honorific 'さん' added.
その絵を描いたのは正洋さんですか？
Was it Mr. Masahiro who painted that picture?
'正洋' refers to a company or brand name implying that the machines were made by '正洋'.