Seismic wave - Notation. 1  The path that a wave takes between the focus and the observation point is often drawn as a ray diagram. 2  For example... 3  ScP is a wave that begins traveling towards the center of the Earth as an S wave. 4  sPKIKP is a wave path that begins traveling towards the surface as an S-wave.
A patent is a legal right granted by the UK Intellectual Property Office for a new invention. It allows the owner of the patent (the patentee) to take legal action against others who use his invention without his permission. The right has a maximum life-time of 20 years in most countries, from the date of the patent application. What a patent does not do is give the owner an automatic right to use the invention.
Step 4. Add 20 years to the application filing date if the application was filed on or after June 8, 1995, to calculate the normal expiration date for the patent. If the patent application was filed before June 8, 1995, the patent's term is 17 years after the grant date of the patent.tep 4. Add 20 years to the application filing date if the application was filed on or after June 8, 1995, to calculate the normal expiration date for the patent. If the patent application was filed before June 8, 1995, the patent's term is 17 years after the grant date of the patent.