关键词: 斯南普吉提, 尿素生产, 专利申请, 专利分布

Abstract: In recent years, the R&D on the urea production technology in our country is rising. Snamprogetti which plays an important role in the ammonia stripping urea production field is one of the global urea production technology licensor. This paper analyzed Snamprogetti's patent information about the urea production technology, introduced the protection situation of related patent in China and pointed out some features about its patent application including the high basic patents protection strength, the key areas of the patent layout like Europe, U.S. and Japan, more than half invalid patents, urea synthesization being the key of patent application, more basis patents than invalid ones for ammonia stripping urea synthesization, and dominance by single application, etc. Through the analysis, it was concluded that the urea production company in our country should strengthen intellectual property monitoring in order to prevent infringement risk, make full use of the invalid patents, pay attention to core technology improvement, and make breakthrough in basic inventions.

Key words: Snamprogetti, urea production, the patent application, patent layout