We started out with three each of three different types of plants: one member of each set was given water that had been boiled on a gas stove, water that had been boiled in a microwave oven, or water that had not been boiled at all.
Drug patent protection: How long is long enough? A recent Senate committee hearing on Bill S-17, Parliament's effort to comply with international trade rules by extending pharmaceutical patent protection to 20 years, inadvertently opened the door to a broader investigation of the inner workings of the country's pharmaceutical patent legislation.
Information on Patents for Researchers. A patent is a legal title granting an inventor the right to exclude others from making, using or selling the claimed invention. The duration of a patent in the U.S.A is 20 years from the date of filing. A patent may be granted for any new and useful process, machine, manufacture or composition of matter, or any new and useful improvements thereof.