A logo should be designed
with the potential for a long life. Logos can date very quickly unless
the designer is careful. Although logo styles may need updating from
time to time, resist the urge to tinker unless it is really necessary.
Consumers are very conservative; it takes a long time to develop the
visual association; if you wish to update the visual meaning, you should
do it carefully and gently.
The function of the logo is to identify a
particular product or company; therefore, the trademark or logo should
be distinctive.
If your logo is similar to others, it will not stand out. The design
must also be sensitive to cultural norms: a jazzy electronic style would
not be appropriate for a funeral parlor.
This flowing convoluted graphic style is
inappropriate for a construction equipment company. A more robust style
is called for.
Name only Logos
Name only logo styles derive their uniqueness
exclusively from a name used in a particular graphic style. This is a
simple, direct message with a lot to commend it. They are normally
appropriate only when the name is relatively short and easy to use and
when it is adaptable and relatively abstract.

Name/Symbol Logos
Name/Symbol Logos consist of the names in a
characteristic type style contained within a simple visual symbol such
as a circle, oval or a box.

The name can also be presented in a distinctive
visual symbol; the Levi logo resembles the patch pocket on a pair of
jeans. The Nike logo visual element lends dynamism and energy.

Initial Letter Logos
When the name is multiword, such Universal
Winding Company, it may be unwieldy and the company decides to use the
initials alone like GM or IBM. It is difficult to invest initials with
personality and distinctiveness. If the company is international the
initials might vary from country to country. Initials can be successful
as logos but need considerable exposure before they achieve recognition.

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Pictorial Name Logos
Composite name/design combinations form a
distinctive logo style that has high recognition value. The name of the
product or organization is an important component of the logo but the
overall style is very distinctive.
 
Associative Logos
Associative logos are freestanding logos; they do
not usually contain the product or company name, but they do have a
direct association with the name. Examples are the shell logo of Shell
Oil, the racing greyhound of Greyhound Corporation and the Michelin
character built up from pneumatic tires. Associative logos must be easy
to understand; the graphic device must represent the product or company
in a simple and direct way.
 
Allusive Logos
The Mercedes "star" may allude to the spokes of a
steering wheel. There is no doubt that the "A" logo of Alitalia, the
Italian airline is designed to bring to mind the horizontal stabilizer
of a jet. The Indian arrow head used by Anaconda alludes to early Indian
copper mining. The connection between the name and the logo is not as
direct as with associative logos and, in fact, the allusion may be lost
on the majority of the audience. It is a fact that employees, customers,
investors and other interested parties prefer a logo with some core of
meaning over a purely abstract logo.

Abstract Logos
Abstract logos have become popular due to the
diversified nature of many large corporations. Such corporations do not
want a logo that refers only to one particular part, product or
division. Abstract logos are fashionable and considered the quintessence
of contemporary design. There will be some subtle associations such as a
big rugged logo for a company making heavy construction equipment or an
intricate, delicate logo for a textile company. Coming up with an
abstract logo that is appealing yet distinctive is difficult.

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