When the colleagues left three years ago, they applied for new patents on the idea.
He obtained a new patent on 26 May 1819.
It already publishes between 2,000 and 3,000 new patents each Tuesday.
It is this process to which the new patent applies.
All these drugs companies are coming up with new patents and they're worth a fortune.
The university is now saying that companies must pay royalties on the new patent, which will last for 17 years.
It won't matter that we failed to write new patents to describe the technology we're using today.
The new patent allows these materials to be made in bulk form.
To get more revenues, in 1878 he began to work on new patents.
This new patent would therefore extend into 2018, an effective term of 29 years.
