Saul Bass (1920 –1996) was an American graphic designer and filmmaker, perhaps best known for his design of film posters and motion picture title sequences. Bass also designed some of the most iconic corporate logos in North America
This is Ideographs which are used to tell an idea faster without any words. To show/express ideographs you can use (<>). These angled brackets are also used by rhetorical critics. In short words ideographs are symbols to tell an idea without words. For example we know that a green sign with a arrow is telling us where is the exit. So is the hear.