China's State Intellectual Property Office (SIPO) has released its latest rankings of the country's companies with the most invention patents. China's second largest telecom equipment manufacture ZTE Corp. tops the list, followed by its bigger rival Huawei Technologies Co.Ltd. and Hong Fujin Precision Industry (Shenzhen) Co. Ltd.

According to SIPO's statistics, a total of 172,113 invention patents were granted in 2011, marking a 27.4 percent increase compared to the previous year. Among them, 112,347 invention patents were granted to Chinese, an annual increase of 6.3 percent and accounting for 65.3 percent of the total amount of patents granted.

The following are the 10 Chinese mainland companies with the most invention patents in 2011.

 Inventec Corp. （英業(yè)達(dá)股份有限公司）

Number of invention patents in 2011: 320

Founded in 1975, Inventec Corp. has been a leader in the electronics and technology industries. Starting as a manufacturer of electronic calculators, Inventec has moved into the design and manufacturing of high-tech products such as notebooks, enterprise servers, storage products, wireless communications, network applications, consumer mobile devices, consumer electronic devices and wireless solutions.

Currently, its annual production capacity exceeds 30 million units of notebooks, over 3 million servers and 5 million smartphones. It is the biggest server ODM (Original Design Manufacturer) and one of the top 5 notebook makers worldwide.

Website: http://www.inventec.com/english/