Wang Kuang guessed right. Li Yan and the others not only would retaliate, but the revenge method was also very vicious. It could almost be said that it was to remove the firewood from the bottom of the cauldron. Although the Wang family would not lose all their investment in the early purchase of the mine, even if the Wang family bought the mine and even organized people to dig out the carbon. However, in the future sales, it would all depend on Li Yan's expression. If they wanted to make money, they would make money and if they wanted to make money, they could be said to be completely in the hands of Li Yan.

In August of the tenth year of Zhenguan in the Tang Dynasty, a historical piece that made the Tang Dynasty history go on a fork in the road occurred. Duan Lun, the Minister of Works, wrote a letter to the request. Given the good effect of cement patent rights, it not only makes the promotion of cement faster and faster, but also protects the rights and interests of cement inventors themselves. Therefore, he asked Emperor Taizong Li Shimin to promulgate a patent law to protect the rights and interests of those who invent new processes and technologies, in order to encourage the enthusiasm of the Tang people for inventions.

Although Duan Lun's move aroused opposition from some pedantic people, such as Kong Yingda, Yu Zhining and others, they believed that once the promulgation of this patent law would only make people obsessed with strange and lustful skills and forget the teachings of sages, they therefore insisted on opposing it. However, a group of important officials such as Fang Xuanling believed that this method was very good. They had seen the impact of new technologies on the Tang Dynasty from the cement matter, and believed that if the Tang Dynasty could have more cement-like inventions, it would only make the Tang Dynasty stronger, so they should strongly support it.

In addition to Fang Xuanling and others, there are two unexpected groups of people supporting the Patent Law. One is Cheng Yaojin and Li Ji and others, and the other group is a royal family member headed by Li Xiaogong and Li Daozong. These two groups of people who have never expressed any opinions on political affairs have even written a letter in a very special way, asking Li Shimin to agree to the promulgation of the Patent Law.

With the support of so many people, and Li Shimin has always attached great importance to craftsmen, he finally agreed to this matter and asked Fang Xuanling and others to write the patent law. Li Yan conveyed some of the patent law he knew to Fang Xuanling through Fang Yiai, which made this significant law officially promulgated half a month later. The first patent law on earth finally began to be officially implemented.

Those who participated in the promulgation of the Patent Law did not realize the importance of this matter. Even Li Yan, a time traveler, lacked the understanding of this matter. He did not know that because his actions had already led the Tang Dynasty to an unknown fork, and the future history had completely changed. The Tang Dynasty he had known before would never appear.

At the same time as the Patent Law was promulgated, a new government department was established, that is, the Patent Department, which belongs to the Ministry of Industry. This patent department has one doctor, one from the fifth rank, one from the sixth rank.

It is worth mentioning that this patent department is the original staff of the Cement Supervisor Institute, and even the office location has not changed. The only brand of the Cement Supervisor Institute was changed to the Patent Department. Because there are no relevant experiences in the patent matters except the Cement Supervisor Institute. Therefore, when the Patent Department was established, the Cement Supervisor Institute was revoked, and the personnel inside were changed into officials of the Patent Department. The power of the Cement Supervisor Institute was also assigned to the Patent Department. Li Yifu was promoted from the seventh-rank supervisor to the Patent Department. However, the doctor in charge of the Patent Department was not Li Yan, but was sent by Li Shimin to another person to serve as the position. Li Yan was automatically dismissed and returned to his Xiaoyao Prince.

When the Patent Office was first established, Li Yan and the others were the first to register a patent. The patents of Datang were different from those of later generations. Registrants could set the protection period for patents, but the shortest of ten years, the longest could not exceed one hundred years. And the longer the time, the less patent fees the specified patent can be charged.

Li Yan registered a ten-year patent for fried tea. After all, this thing cannot be kept confidential forever, and it is also beneficial to promote it. It is good to charge a ten-year patent fee. In addition, perfume, fireworks, mirrors and other things are the longest period of registration. These things are now luxury goods, and Li Yan does not intend to disclose them too early. The distilled liquor technology is jointly registered in the name of Li Yan, Li Xiaogong and others. After all, Li Yan paid the money and only invested in technology, so the patent was considered a part of Li Xiaogong and the other four bought a part, which was shared by the five people. After obtaining their consent, the patent was also registered for a hundred years. After all, the food is precious now, and the censor has been impeached by one of their distillery. If the distilled liquor technology is promoted, it is probably not impeached by the censor, and even Wei Zheng would report them one copy.

In addition to the things above, Li Yan also registered honeycomb coal and coking technology in the name of the Carboniferous Industry Association, and it took a hundred years. These two are their powerful weapons to deal with the Wang family in Taiyuan. How can we do it if we don’t take a longer time?

The two things Li Jingheng mentioned before are referring to honeycomb coal and coking technology. You must know that after the coal is dug out, it will be sold next. With the application of carbohydrate by cement plants, more and more people have realized that carbohydrate is an excellent fuel, but cement plants are still the biggest buyer of carbohydrate. Now cement plants are under the control of Li Yan's Cement Industry Association, so all cement plants can be required to ban the carbohydrate produced by Wang. In this way, if the carbohydrate produced by Wang in Taiyuan is to be sold, they can only sell them separately.

However, Li Yan has now registered patents for both honeycomb coal and coking, which almost cut off the private market and high-end coking market of Wang's carbide. It can be said that after the carbide of Wang's Taiyuan was dug out, it was almost impossible to sell it. Even if some industries require a small amount of raw coal, it is simply a drop in the bucket and cannot play a big role. Therefore, Wang's carbide of Wang's carbide in Taiyuan is destined to be a tragedy.

"Cheers~" After obtaining the registration certificate for honeycomb coal and coking technology, Li Yan was carried to the Fairy Tower by Cheng Huailiang, Qin Huaiyu and others. Everyone was not drunk and returned. After Li Yexu first saw Li Yan's methods, he admired him very much. He respected Li Yan in person three big bowls of sea bowls and the Five Kings of Drunk, which scared Li Yan to his face pale.

Li Yan was also very satisfied with the matter of the Patent Law. He had long wanted to create the Patent Law. However, although his identity was noble, he had no political power. It was almost impossible to convince Li Shimin and the important officials in the court with just one force. This time, he finally seized the opportunity and took advantage of the coal mine to unite the united forces and run around in person. He finally convinced so many people and finally promulgated the Patent Law.

However, thinking about the price he paid for this, Li Yan was also a little crying. It was fine if the others were either involved in coal mines or cement. It was not difficult to convince them if he had to spend some effort. However, the most difficult thing was Duan Lun, the cheap uncle of the Minister of Works. Because the patent law has the greatest relationship with the Ministry of Works, it was most suitable to propose it by Duan Lun. However, although Duan Lun and Li Yan had a good relationship, they wanted him to help him with such a big favor for no reason. Obviously, it was obvious that

It is unlikely that in the end, Li Yan gritted his teeth. In addition to agreeing to provide the Ministry of Industry with a low-priced coke for three years, he also sold himself to the other party and promised to help the Ministry of Industry improve the current iron smelting and steelmaking technology. Duan Lun originally thought that Li Yan was bragging, but when Li Yan spoke of the steel filling method, he immediately shocked Duan Lun. Although he didn't know how effective this method was, it sounded much better than the current steel-fried method. He also remembered the talent shown in Li Yan's equipment, so he finally agreed.

"Liuhuang, you're giving us a breath this time. The carbonite mine we can buy is less than half of the ones that the Wang family in Taiyuan has. I think who they will sell to in the future?" Yan Bei was also happy. After drinking half a pound of Wuwang Zui, his face turned red with a breath of alcohol. It seemed that he was almost drunk.

"Haha~, I heard that their Wang family spent a lot of money to buy these carbonite mines. This time I asked them to lose all their money!" Li Jingheng also walked over staggeringly, with a look of a villain on his fat face.

When the people around him heard the words of them, they laughed proudly. Although carbonite is a good thing, if they can't sell it, they will pile up stones. Moreover, they did it very secretly this time. It is estimated that the Wang family in Taiyuan didn't know that he had been cheated, so Li Yan and the others would not promote it. They could only wait until the Wang family in Taiyuan paid for the carbonite to dig out. Then the matter was made public. I guess Wang's face must be very good at that time.

"By the way, Liu Huang, although your cement supervisory institute is gone, the position of the Patent Office is yours, so why did you change it to the one named Xu?" Just as Yan Bei and Li Jingheng were sent away, Li Jingye squeezed over again and asked Li Yan with a smile. The one named Xu he mentioned was Xu Jingzong, the new doctor of the Patent Office. He was originally a member of the Secretariat and specially drafted an imperial edict for Li Shimin. However, this time he was transferred to the Patent Office and became a position that should belong to Li Yan.

"Oh, I'm wondering now. I guess someone might have said bad things about me, so my father sent a Zhongshuo clan to replace me." Li Yan said helplessly. He couldn't understand this. No matter how he looked at it, the position of doctor in the Patent Office should be his own, but his emperor's father packaged his cement supervisor into a patent department, but he kicked himself aside. It was really strange.

Although Li Yan did not become a doctor of the patent department, he was very interested in the newly appointed Xu Jingzong. This Lord Xu is also a famous person in history. He is known as Wu Zetian's two thugs together with the Li Yi Mansion, and is the most critical figure in promoting Wu Zetian to the throne. But what made Li Yan laugh and cry was that now Xu Jingzong and Li Yi Mansion were both taken into the patent department by himself and he also became colleagues. These two were more cunning than the other, and asked them to join them to manage the patent department. This made Li Yan really worried. He didn't know if the patent department he had finally created would be sold by these two traitors together? (To be continued)

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