BEIJING, April 15 (Xinhua) -- The following is a summary of published science and technology news of China.

REUSABLE LIQUID ROCKET ENGINE

China has been actively developing space propulsion technology in recent years, and the latest achievement is successful ground ignition tests of a 130-tonne liquid oxygen and kerosene engine that will power the country's reusable carrier rockets.

Developed by an institute under the China Aerospace Science and Technology Corporation, the new reusable engine was ignited twice on Friday at a test site in northwestern Shaanxi Province.

It has so far completed a total of 15 repetitive tests featuring 30 ignitions, with the cumulative test time exceeding 3,900 seconds. The number of repetitive tests on the engine has surpassed the previous record for liquid rocket main engine testing in China, the developer said on Sunday in a news release.

REMOTE SENSING SATELLITE

China on Monday launched a Long March-2D carrier rocket, placing a remote sensing satellite into space.

The satellite will provide commercial remote sensing data services for emerging scenarios such as digital agriculture, urban information modeling and live 3D, as well as traditional fields including land surveying and mapping, disaster prevention and mitigation, and maritime monitoring.

INTERNATIONAL IP COOPERATION

The China National Intellectual Property Administration (CNIPA) announced that it will join the Patent Prosecution Highway (PPH) Improvement Initiative, which involves cooperation between the world's five leading IP offices, namely China, the United States, Europe, Japan and the Republic of Korea.

The objective of this initiative is to establish a more predictable examination cycle. According to the CNIPA, it will this year strive for an average duration of 3 months from the grant of a PPH request to issuance of a first office action. Similarly, it will aim for an average response time from examiner to applicant of no more than 3 months. Enditem

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