Band-Aid is a brand name for Johnson & Johnson's

Johnson & Johnson

Johnson & Johnson is an American multinational pharmaceutical, medical devices and consumer packaged goods manufacturer founded in 1886. Its common stock is a component of the Dow Jones Industrial Average and the company is listed among the Fortune 500....

 line of adhesive bandage

Adhesive bandage

An adhesive bandage, also called a sticking plaster is a small dressing used for injuries not serious enough to require a full-size bandage. "Band-Aid" is the common American English term, while "plaster" is the term in British English usage.- Function :The adhesive bandage protects the cut, e.g...

s and related products. It has also become a genericized trademark

Genericized trademark

A genericized trademark is a trademark or brand name that has become the colloquial or generic description for, or synonymous with, a general class of product or service, rather than as an indicator of source or affiliation as intended by the trademark's holder...

 for any adhesive bandage in Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

, Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 and the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

"Band-aid" has also entered usage as a term for any temporary fix. (e.g. "Band-aid solutions were used to fix the leak.")
The Band-Aid was invented in 1920 by Earle Dickson

Earle Dickson

Earle Dickson was an American inventor best known for creating Band-Aid® brand adhesive bandages.Dickson was a cotton buyer at the Johnson & Johnson company. His wife, Josephine Knight, often cut herself while doing housework and cooking. Dickson found that the gauze stuck to a wound with tape...

, an employee of Johnson & Johnson, for his wife Josephine Dickson, who frequently cut and burned herself while cooking.