U.S. Patent 7941865 was awarded to Black & Decker Inc. on 2011-05-10 and describes a “Rechargeable battery pack and operating system.” This patent has been cited 249 times by other U.S. patents which places it in the top 500 cited patents since 2010 according to our law firm research, and makes it of the most innovative digital communication patents in the field of electrical engineering. The abstract states:

A method and system for authenticating a smart battery having a smart battery and an electronic device. Both the device and the smart battery generate encrypted random strings using key material based by A/D noise bits as a seed value. A pseudo random number is generated from the A/D noise that is transmitted to both the electronic device and the smart battery. The pseudo random number is used by both devices as a key index to select one of a plurality of keys stored in separate key libraries. The keys, or key material, is used to execute an encryption algorithm. The two encryption data streams are then compared to authenticate the smart battery. Link: U.S. Patent 7941865

This patent was originally filed on 2006-11-20 which gives it a processing time of 1632 days, compared to an average processing time of 2016 in the field. Black & Decker Inc. has 4030 total patents. The first named inventor is Daniele C. Brotto of Baltimore, MD. The assistant examiner was Sayed Beheshti Shirazi.

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