When was the earliest bar code patent approved?

This patent was first applied by American inventor Norman Woodland on 1949.

1. Bar code is a code identification system for commodity identification and information management.

2. Barcodes are composed of multiple black and white stripes and characters such as numbers and letters, which can be read and recognized by photoelectric scanners and other equipment;

3. Barcodes are widely used in commodity retail, inventory management, logistics distribution and other fields, which can improve work efficiency and accuracy;

4. The standardization and normalization of bar code is an important guarantee to ensure the identification and application of bar code. The commonly used standards in the world are EAN, UPC, Code 128, etc.

5. The application of bar code is not limited to the commodity field, but also can be used in the fields of bills, medical care, books, electronic payment and so on.

6. The development and innovation of barcode technology has promoted the development of intelligent logistics, internet plus and other emerging fields;

7. The management of bar code system needs to strengthen the quality control of identification and coding to improve the stability and reliability of the system.

To sum up, shape code is a kind of coded identification used for commodity identification and tracking. Woodland's patent is not a barcode in the modern sense, but a linear code similar to a scale. It was not until the early 1970s that barcodes were really widely used, the most famous of which was the Universal Product Code (UPC) system developed by IBM in 1974. Based on modern barcode technology, barcode patents can be traced back to 1974 at the earliest.

Legal basis:

Article 22 of the patent law

The scope of protection of the invention patent is determined by the claims. Claims include independent claims and dependent claims. The scope of protection of a claim is determined by its literal content.

Article 52

The patentee enjoys exclusive rights within the validity period of the patent right. Without the permission of the patentee, no one may commit the following acts:

(1) manufacturing, using, promising to sell and selling patented products that have been manufactured;

(2) importing, undertaking to import and selling patented products that have been imported;

(3) using a patented method or promising to use a patented method;

(4) promising others the method of exploiting the patent.