"Mr. Yang, did you just say that sulfonamide will soon become a medicine that civilians can afford?" It is obvious that Gu Wenxiu didn't care about Yang Feng's generosity, she cared about the price of sulfonamide.

"That's right, of course it takes a little time! In fact, I'm now preparing to apply for a patent for sulfonamide on behalf of Yanhuang Laboratory in Europe and the United States. If I can obtain a patent, then I will find a partner in Europe and the United States, and then transfer the sulfonamide to industrial production. You also know the domestic conditions, and no matter what, it's still a little worse." Yang Feng said.

"So how much time will it take to drop your sulfonamide from this damn twenty-two dollars?" Helen said, gritting her teeth.

Twenty-two dollars, a skilled worker in the United States now cannot earn this money in a month, and this must be the premise that he has a job.

"It's going to take more than a year, right?" Yang Feng said carefully. He had to make money from the previous year first. He would sell the patent license out next year, sit at home and wait for the money to collect it, and then put out the penicillin. This thing is even more difficult to make. It is estimated that it would be fine to make huge profits in the past two or three years.

"Then what are you waiting for? Go and apply now?" Helen screamed.

"You also know that this is very troublesome. First of all, China is not a member of the Paris Convention, which means that I cannot apply through the Paris Convention, so I can only apply directly to various countries. However, I don't know how to apply for patents, especially patent applications for drugs, especially patent applications for drugs." Yang Feng said. What he said was also the fact that patent applications are not as simple as talking, especially drug patents. Especially drug patents, just review can make people worry.

The ballpoint pen and folding bicycle patent that Lin Yin applied for for him has not yet changed. This is still the simplest industrial design patent, and Lin Yin has entrusted her uncle, an international student studying law in the United States to handle it.

In fact, Yang Feng was not ready to worry about that. His goal was still Pfizer. It was very simple. Pfizer helped him apply for a patent in the United States. Then Yang Feng provided Pfizer with a patent license, and Pfizer was responsible for producing sulfonamide. If Pfizer doesn't do it, then go to someone else, such as Bayer in Germany.

As for whether Pfizer will apply by itself, Yang Feng is not worried about this. The principle of American drug patents is to invent it first and then apply. If Pfizer wants to find its true identity in a vast range of chemical materials based on just a Chinese name and finished tablets, it is simply looking for a needle in a haystack.

Even if they can really get it out, it will probably not take place in a year or two. I am afraid that by then, Yang Feng and his new partners will even build a pharmaceutical factory.

As for Brother Wei’s patent, don’t consider it. It’s also good to learn Coca-Cola. After more than a hundred years, no one knows what the formula is. I’m afraid that if Americans in this era want to know the ingredients of Brother Wei, they have to wait for another sixty years.

"Okay, beauties, don't discuss these dull topics. I have a good thing here. I originally brought it to Xiaojing. You can try it together. Remember to advertise it for me!" Yang Feng smiled evilly at this moment.

The three girls followed Yang Feng upstairs to his office with confusion, and then watched Yang Feng take out a pack of things from the drawer.

"What is this?" Yang Jing foolishly opened a seven-degree space that teared off all trademarks.

Gu Wenxiu and Helen came over together, looking at the strange look, out of feminine intuition, their faces immediately turned red.

Helen raised her head and looked at Yang Feng with inquiring eyes.

"Don't look at me, I've never used it before! But I can demonstrate it to you." Yang Feng smiled evilly and opened a piece, then picked up the water cup beside him and poured it down.

Helen, whose eyes widened, snatched her over, and then checked her with Gu Wenxiu in amazement.

"Oh my God!" Helen screamed, turned around and rushed to the table frantically, grabbing all the remaining seven-degree space.

At this time, Yang Jing finally understood what this was and stood there with a blushing face.

"Hey, hey! Don't rob it! This is not a lady?" Yang Feng shouted quickly.

"Do you have any objection?" Helen looked at him viciously, like a female cat protecting her cub.

"No, no objection!" Yang Feng said weakly. Women who have menstrual periods can't afford to offend them.

Each person had a big bag, so they quickly sent them downstairs. Yang Feng had no time to coax the girls. He still had big work now. He drove straight to Liu Haining's bicycle factory. After unloading the bicycle parts, he turned around and entered Wang Chuanming's machinery factory opposite the road.

"Brother Wang, see if you can use this thing to process a mortar tube." Yang Feng carried a seamless steel pipe and went straight to Wang Chuanming's office.

This is a sample he bought from the steel market, but it is made in China with an inner diameter of 100 mm.

Wang Chuanming and a master in his fifties immediately came over.

"Brother Yang, do you want to be a mortar?" Wang Chuanming asked.

"Now the Japanese are coming to the door, and I'm thinking about making a few mortars to give to the 29th Army." Yang Feng said.

"It's a little thinner, I can't hold on to the explosiveness of the bottom." The master shook his head as soon as he saw it.

Yang Feng smiled and picked up a drill bit on the table and tugged it with all his strength.

"Huh?" The master's face changed immediately.

"What kind of steel is this?" he asked in a slight trembling voice, stroking the steel pipe with only a little scratch.

"High-pressure alloy steel is generally used on boiler pipes." Yang Feng said.

"Can it work?" he asked again.

"You can try it, but if it's so hard, our knives won't work." said the master.

"The alloy cutter is in my car. Take it out later and you can try to see if it can be installed on the machine. I also brought the alloy welding rod."

"That's easy to do. Pick out the wire on the inner wall, then use a whole round steel truck to connect the striker inside and the bottom, pick out the wire outside and twist it directly in, and then weld the joints to ensure they are strong enough. After you have done it, get some explosives and put them in according to the maximum amount of the bottom fire of the mortar shell and find a secluded place to test. As long as the chamber is not blown up, there is absolutely no problem." said the master.

“How long can I make one like this?”

"It's hard to say, this is a meticulous job. I'm afraid I can only do our factory myself. I guess one can be one a day at the fastest. Besides, it's useless to make a cannon barrel. The other parts are much more troublesome than this."

"You don't need to care about other parts. I guess I can bring 500 sets in half a month. You just need to make a gun barrel!" Yang Feng said with a smile.

"How many?" Wang Chuanming and the others were shocked.

"Five hundred sets, if not enough, then do it."

"Then how many steel pipes do you have?"
Chapter completed!