NL PETROLEUM PROD innovation strategy

Patent filings in countries

#	Country	Total Patents
#1	United Kingdom	55
#2	EPO (European Patent Office)	23
#3	United States	19
#4	Canada	15
#5	Norway	11
#6	Japan	8
#7	Australia	7
#8	Ireland	7
#9	Brazil	3
#10	South Africa	3
#11	WIPO (World Intellectual Property Organization)	1

#	Industry
#1	Civil engineering
#2	Materials and metallurgy
#3	Machine tools
#4	Machines
#5	Surface technology and coating

#	Technology
#1	Earth drilling
#2	Working metallic powder
#3	Unspecified technologies
#4	Building materials
#5	Grinding tools
#6	Alloys
#7	Soldering, welding and flame cutting
#8	Milling
#9	Layered products
#10	Metal-working

Publication	Filing date	Title
US4823892A	1987-11-09	Rotary drill bits
US4781256A	1987-06-30	Cutting structures for rotary drill bits
GB8713807D0	1987-06-12	Cutting structures for rotary drill bits
GB8711255D0	1987-05-13	Rotary drill bits
GB8711204D0	1987-05-12	Electrical connector
GB8629823D0	1986-12-13	Rotary drill bits
GB8628168D0	1986-11-22	Rotary drill bits
GB8626918D0	1986-11-11	Cutting structures for rotary drill bits
GB8626919D0	1986-11-11	Rotary drill bits
GB8623427D0	1986-09-30	Improvements in or relating to rotary drill bits
GB8619304D0	1986-08-07	Rotary drill bits
GB8612012D0	1986-05-16	Rotary drill bits
GB8611448D0	1986-05-10	Rotary drill bits
GB8611449D0	1986-05-10	Improvements in or relating to rotary drill bits
GB8609352D0	1986-04-17	Improvements in or relating to cutting structures for rotary drill bits
GB8528894D0	1985-11-23	Rotary drill bits
GB8528299D0	1985-11-16	Rotary drill bits
GB8524146D0	1985-10-01	Rotary drill bits
GB8522435D0	1985-09-10	Rotary drill bits
GB8521924D0	1985-09-04	Rotary drill bits