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What is the patent name of the United States patent publication number "us5805547"?
Patent name: optical disk device and replacement processing method.

"Patent" refers to the exclusive interests and rights.

The word patent comes from Latin Litteraepatentes, which means open letters or open documents. It is a certificate used by medieval monarchs to issue certain privileges, and later refers to the exclusive rights certificate signed by the British king himself.

Patents are the largest source of technical information in the world. According to empirical statistical analysis, patents contain 90%-95% of the global scientific and technological information.

The patent system aims to protect technology from infringement of exclusive rights, and any subject other than the obligee can only obtain the right to use the patent through the authorization of the patentee.

With the continuous improvement of the legal system, the use of patents presents a diversified trend, and patents are invalid, revoked and expired.

Only by fully understanding such a legal system can we make full use of patent resources and realize more economic value for enterprises.