"Mr. Yang, you just said that soon sulfonamides will become a medicine that civilians can afford?" Obviously, Gu Wenxiu didn't care about Yang Feng's generosity, what she cared about was the price of sulfonamides.

"That's right, of course it's going to take a little time! In fact, I am now preparing to apply for a patent for sulfonamide in Europe and the United States on behalf of Yanhuang Laboratory, if I can obtain a patent, then I will look for partners in Europe and the United States, and then transfer sulfonamide to industrial production. Yang Feng said.

"And how much time will it take for your sulfonamide to come down from this damn twenty-two dollars?" Helen said through gritted teeth.

Twenty-two dollars, a skilled worker in the United States now, can't earn this money for a month, and this has to be the premise that he has a job.

"Why, it will take more than a year, right?" Yang Feng said cautiously, no matter what, he has to make a year's money first, and then sell the patent license in the next year, just sit at home and wait for the money to be collected, and then put penicillin out, this thing is more difficult to manufacture, and it is estimated that it is no problem to make a huge profit for two or three years.

"So what are you waiting for? Hurry up and apply? Helen screamed.

"First of all, China is not a member of the Paris Convention, which means that I can't apply through the Paris Convention, so I can only apply directly to various countries, but whether it is the United States or Europe, I don't know how to apply for a patent, especially for drugs." Yang Feng said that what he said is also true, patent applications are not as simple as moving their mouths, especially drug patents, just review can make people worry to death.

Lin Yin helped him apply for a ballpoint pen and folding bicycle patent, but there is no movement until now, this is still the simplest industrial design patent, and Lin Yin still entrusted her uncle, a student studying law in the United States, to handle it.

In fact, Yang Feng is not ready to that heart, his goal is still Pfizer, it is very simple, Pfizer helped him apply for a patent in the United States, and then Yang Feng provided patent licenses to Pfizer, and then Pfizer was responsible for the production of sulfonamides, if Pfizer did not do it, then go to someone else, such as Bayer in Germany.

As for whether Pfizer will run to apply for it itself, Yang Feng is not worried about this, the principle of American drug patents is to invent first and then apply, and if Pfizer wants to find out its true identity in the vast sea of chemical materials with only a Chinese name and finished tablets, it is simply looking for a needle in a haystack.

Even if they can really fish it out, it is estimated that it will not be a matter of a year or two, and I am afraid that Yang Feng and his new partners will even build a pharmaceutical factory by then.

As for Viagra's patent, don't think about it, it's good to learn Coca-Cola, for more than a hundred years, no one knows what the formula is, I'm afraid that Americans in this era want to know the ingredients of Viagra, so they have to wait for another sixty years.

"Okay, beauties, don't discuss these dull topics, I have a good thing here, it was originally brought to Xiaojing, just try it out together, remember to advertise for me!" Yang Feng smiled wickedly at this moment.

The third girl followed Yang Feng upstairs to his office with a puzzled expression, and then watched Yang Feng take out a bag of things from the drawer.

"What is this?" Yang Jing stupidly opened a seven-dimensional space that tore off all the trademarks.

Gu Wenxiu and Helen leaned over together, looking at the peculiar shape, out of female intuition, their faces immediately turned red.

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

"Don't look at me, I've never used it! Still, I can show you how. Yang Feng smiled wickedly and opened a slice, then picked up the water cup on the side and poured it down.

Helen, whose eyes widened, snatched it away, and then checked it with Gu Wenxiu dumbfounded.

"Oh my God!" Helen let out a scream, turned and frantically pounced on the table, snatching all the remaining seventh-degree space.

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

"Hey, hey! Don't rob it! Isn't that ladylike? Yang Feng hurriedly shouted.

"Do you have an opinion?" Helen looked at him viciously, like a she-cat guarding her cubs.

"No, no comment!" Yang Feng said weakly, a woman in the menstrual period can't be provoked.

One person has a big bag, hurry up and send them downstairs, Yang Feng doesn't have time to play with the girls, he still has a lot of work to do, he drove straight to Liu Haining's bicycle factory, and after unloading the bicycle parts, he turned around and drove into Wang Chuanming's machinery factory across the road.

"Brother Wang, let's see if you can make a mortar barrel with this thing." Yang Feng carried a seamless steel pipe directly to Wang Chuanming's office.

This is a sample he bought from the steel market, but it is domestic, with an inner diameter of 100 millimeters.

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

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

"Now that the Japanese are coming to the door, I am thinking about making a few mortars and sending them to the 29th Army." Yang Feng said.

"It's a little thinner, and it can't hold the strength of the primer explosion." The old master shook his head when he saw it.

Yang Feng picked up a drill bit on the table with a smile and stabbed it down with all his might.

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

"What kind of steel is this?" He asked in a slightly trembling voice, stroking the steel pipe with only a faint scratch.

"High-pressure alloy steel, generally used in boiler pipes." Yang Feng said.

"Will it work?" He then asked.

"You can try, but if it's that hard, our knives won't work." The old master said.

"The alloy tool is in my car, you can take it out later and see if you can install it on the machine, and I also brought the alloy electrode."

"That's easy to do, pick out the wire on the inner wall, and then use a whole round steel car to pull out the inside of the firing pin and the bottom connection, pick out the wire outside and screw it directly in, and then weld the seam to ensure that it is strong enough, and then get some explosives after it is done, according to the maximum amount of mortar shell primer, put it in a secluded place to test it, as long as it does not explode, it is absolutely fine." The old master said.

"How long does it take to make such one?"

"It's hard to say, this is a meticulous job, I'm afraid I can do it myself in our factory, and it is estimated that it will have to be one a day at the earliest, and it is useless to make a light cannon barrel, and the other parts are much more troublesome than this."

"You don't need to care about the other parts, it is estimated that I will be able to pull five hundred sets in half a month, you only need to make the barrel!" Yang Feng said with a smile.

"How much?" Wang Chuanming and the others were taken aback.

"Five hundred sets, if it's not enough, make it again."

"And how many steel pipes do you have?"

"One hundred tons!" Yang Feng smiled happily.

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