Zhenfei Zhang

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Burlington, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Digital signature technique
- Patent number 10,924,287
- Issue date Feb 16, 2021
- OnBoard Security, Inc.
- Jeffrey Hoffstein
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital signature method and apparatus
- Patent number 10,277,403
- Issue date Apr 30, 2019
- Onboard Security, Inc.
- Jeffrey Hoffstein
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Digital Signature Technique
- Publication number 20190020486
- Publication date Jan 17, 2019
- Onboard Security, Inc.
- Jeffrey Hoffstein
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital signature method and apparatus
- Publication number 20170250819
- Publication date Aug 31, 2017
- Security Innovation Inc.
- Jeffrey Hoffstein
- H04 - ELECTRIC COMMUNICATION TECHNIQUE