The "cold" thinking behind the graphene patent "heat"

The transparent mobile phone screen can be bent freely, the ultra-thin computer screen is as light as paper, and the electric car can be charged in just one minute... These techniques, which often appear in science fiction movies, with the advent of graphene materials, will probably come from Dreams come into reality."

In 2010, physicist Andrei Novoslov of the University of Manchester in the United Kingdom won the Nobel Prize in Physics for the successful separation of graphene. Since then, interest in graphene has been exploding in companies and research institutions around the world. According to relevant data, as of May this year, the number of patent applications filed in the field of graphene has reached 9,218, and it is growing at a rate of 19% per year. It is worth mentioning that Chinese companies and research institutions have the largest number of patent applications and the fastest growth in the field of graphene.

Although the number of patent applications in the field of graphene in China has increased significantly, there are still few examples of industrialization of patented technologies. In this regard, industry insiders said that in the field of graphene, most patent applicants are concentrated in scientific research institutions such as universities and research institutions, and should strengthen the combination of production, education and research, thereby accelerating the transformation and production of patented technology. Experts also suggested that while increasing the support for small and medium-sized enterprises in technology transformation, the proportion of industrial applications should be increased in the evaluation of scientific research results, thereby increasing the industrialization of patent technology.

"Nor Prize" promotes research and application of booming products

Graphene has always been considered a hypothetical structure and cannot be stably present alone. Until 2004, British physicists successfully separated graphene from graphite. Once graphene was released, it immediately caused a worldwide research boom. The reason is that Jiang Xu, vice chairman of the Graphene Industry Technology Innovation Alliance of Jiangsu Province, said in an interview with the China Intellectual Property News that the reason why graphene has attracted worldwide attention is that British physicists have successfully separated graphene. The “Nobel Prize” effect brought by the Nobel Prize; secondly, the existing energy and materials have been exhausted. How to discover new energy and new materials is an urgent problem for human beings, and the development of graphene single-layer crystals is successful. It is expected to replace carbon or silicon and become a new material to promote technological progress.

Graphene is a two-dimensional material with only one carbon atom thickness. It is the thinnest and hardest nanomaterial in known materials. Graphene is 200 times harder than steel. If graphene is used to make a film equivalent to the thickness of a normal plastic bag, it can withstand objects weighing about 2 tons. Although graphene has a high hardness, it is only one-twentieth of the thickness of paper and can be bent at will. In addition, graphene has excellent electrical and thermal conductivity. At room temperature, graphene transports electrons faster than known conductors.

"Because of its high hardness and flexibility, the current graphene is mainly used in two fields, graphene batteries and graphene transparent conductive films." Jiang Xu told reporters that in recent years, the state has proposed to promote the development plan of electric vehicles. However, due to the poor battery life and long charging time of the electric vehicle battery, the battery capacity can not meet the daily requirements of people, and the super capacitor made of graphene can realize charging in a short time, even one minute charging. It has made it possible to spread the large area of ​​electric vehicles. In addition, graphene can be used to make transparent conductive films, and it is expected that there will be an electronic screen that is as thin as paper and can be bent at will.

In the long run, graphene can also be used in medicine, transportation and other fields. For example, graphene is used to replace heavy metals in cosmetics today; non-toxic transparent tape made of graphene can be used to isolate bacteria after being applied to wounds.

Patent application fever continues to actively carry out patent layout

With the rising trend of graphene research, many companies and research institutions around the world have begun to actively carry out patent layout in the field of graphene. Tian Dingding, an examiner of the Chemical Invention Review Department of the Patent Office of the State Intellectual Property Office, introduced that from 2004 to 2012, the number of patent applications in the graphene field increased in many countries and regions around the world, and the number of patent applications submitted by China increased the most. In particular, between 2008 and 2012, the number of patent applications increased almost every year.

“After the search, before 2008, the number of patent applications filed by domestic applicants in the field of graphene was less than 50 per year, but it has exploded since 2010. The number of patent applications in 2010, 2011 and 2012 is 500 respectively. More than 900 pieces, more than 1300 pieces." Tian Dingding said that the continuous increase in the number of patent applications for graphene indicates that the research heat of graphene in China is still rising, and the research team is growing rapidly.

Graphene is widely used in the physical field due to its high hardness and high transparency. Up to now, the patent application for graphene not only includes the preparation method of graphene, but also covers all aspects of human daily life.

“The patent applications of domestic enterprises and research institutions in the field of graphene are mainly concentrated in three aspects, namely, the preparation method of graphene, electronic components made of graphene, such as batteries, transistors, etc., as well as semiconductor materials, composite materials, lithium batteries. Extreme, chemical catalysts, etc.," said Tian Dingding.

For the status quo of patent applications in the domestic graphene field, Jiang Xu said that China's patent applications are mainly concentrated in scientific research fields, such as composite materials and application technologies in the field of carbon nanotubes. It is reported that Jiang Xu's other identity is the general manager of Nanjing Xianfeng Nano Material Technology Co., Ltd. (hereinafter referred to as Xianfeng Nano). He told reporters that in the field of graphene, Xianfeng Nano has developed many products and targeted major innovations. Points and key technologies were submitted for related patent applications, such as off-site application of large-area graphene, and transparent conductive films of graphene. In addition, Xianfeng Nano also submitted a number of utility model patent applications, and submitted a patent application for invention together with the partners.

"The continuous improvement of patent layout not only helps Xianfeng Nano's graphene products to continue to increase in the domestic market, but also exported to the United States, Britain, Singapore, Australia, Sweden, Japan and South Korea, etc." Jiang Xu said.

Suggestions and measures to accelerate industrial conversion efficiency

Although the number of patent applications in the field of graphene has been growing by domestic companies and research institutions, few patented technologies have been transformed into examples of scientific and technological achievements. “In China, most of the patented technologies in the field of graphene are still in the scientific research stage.” Jiang Xu suggested that in order to promote the progress of the conversion of patented technology to scientific and technological achievements, the relevant state departments should issue relevant incentive policies, and the evaluation of scientific research results should be added. The proportion of large industrial applications is directly linked to scientific research results; in addition, the support for the technological transformation of small and medium-sized enterprises and the construction of evaluation systems should be increased.

Tian Dingding, who is engaged in patent examination in the chemical field, has been concerned about the process of converting graphene technology into scientific and technological achievements. She introduced that in China, the research on graphene is mainly universities and research institutions, which have strong research strength and are the main patent applicants for graphene technology. Domestic companies are far less invested in scientific research than foreign companies, and companies that file patent applications in the graphene field are rare. In this regard, Tian Dingding suggested that domestic enterprises and universities should strengthen the construction of industry-university-research platforms, comprehensively integrate research resources and research projects, strengthen the research and transformation of scientific and technological achievements, and further enhance and expand China's research and development capabilities in the field of graphene. And production capacity.

In addition to the need for industrialization, another major problem facing the graphene industry is that although the number of domestic patent applications has increased rapidly, the number of international patent applications submitted by domestic companies through the Patent Cooperation Treaty (PCT) has been very high. Less, this will expose domestic companies to huge intellectual property risks in overseas markets. Jiang Xu said that if there is no patent support, it is difficult for domestic companies to develop and produce graphene-related products into foreign markets. Even if they enter foreign markets, they may encounter potential patent risks. In this regard, Tian Dingding suggested that domestic enterprises should increase the depth, intensity and breadth of PCT international patent applications. At the same time, enterprises should cultivate comprehensive and international patent talents as soon as possible, and strengthen the intellectual property layout of enterprises.

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