Xuefeng Yang

Follow

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Device and method for determining solubility of elemental sulfur in...
- Patent number 11,255,832
- Issue date Feb 22, 2022
- PetroChina Company Limited
- Li Wang
- G01 - MEASURING TESTING
Information Patent Grant
Digital content rights management method and system
- Patent number 8,887,299
- Issue date Nov 11, 2014
- Peking University Founder Group Co., Ltd.
- Yi Wang
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
DEVICE AND METHOD FOR DETERMINING SOLUBILITY OF ELEMENTAL SULFUR IN...
- Publication number 20200132647
- Publication date Apr 30, 2020
- Petrochina Company Limited
- Li WANG
- G01 - MEASURING TESTING
Information Patent Application
DIGITAL CONTENT RIGHTS MANAGEMENT METHOD AND SYSTEM
- Publication number 20150067887
- Publication date Mar 5, 2015
- PEKING UNIVERSITY FOUNDER GROUP CO., LTD.
- Yi Wang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital Content Rights Management Method and System
- Publication number 20100086130
- Publication date Apr 8, 2010
- PEKING UNIVERSITY FOUNDER GROUP CO., LTD.
- Yi Wang
- G06 - COMPUTING CALCULATING COUNTING