HEPWORTH & GRANDAGE LTD has a total of 144 patent applications. Its first patent ever was published in 1925. It filed its patents most often in United Kingdom, France and Germany. Its main competitors in its focus markets engines, pumps and turbines, mechanical elements and materials and metallurgy are SAKAKIBARA SHIGEKADO, WELLWORTHY LTD and ERNST MAHLE.
# | Country | Total Patents | |
---|---|---|---|
#1 | United Kingdom | 58 | |
#2 | France | 20 | |
#3 | Germany | 18 | |
#4 | United States | 10 | |
#5 | Italy | 7 | |
#6 | Australia | 4 | |
#7 | Spain | 4 | |
#8 | South Africa | 4 | |
#9 | Canada | 3 | |
#10 | Switzerland | 3 | |
#11 | New Zealand | 3 | |
#12 | India | 2 | |
#13 | Japan | 2 | |
#14 | Sweden | 2 | |
#15 | Brazil | 1 | |
#16 | Mexico | 1 | |
#17 | Romania | 1 | |
#18 | WIPO (World Intellectual Property Organization) | 1 |
# | Industry | |
---|---|---|
#1 | Engines, pumps and turbines | |
#2 | Mechanical elements | |
#3 | Materials and metallurgy | |
#4 | Surface technology and coating |
# | Technology | |
---|---|---|
#1 | Pistons and sealings | |
#2 | Special machines | |
#3 | Cylinders for combustion engines | |
#4 | Casting metal | |
#5 | Alloys | |
#6 | Foundry moulding | |
#7 | Coating metallic material | |
#8 | Pumps | |
#9 | Working metallic powder | |
#10 | Single-crystal-growth |
# | Name | Total Patents |
---|---|---|
#1 | Wells Alan | 6 |
#2 | Robinson James Eustace | 6 |
#3 | Cockcroft Frederick Edward | 6 |
#4 | Grimshaw Rex William | 4 |
#5 | Hylton Leslie | 3 |
#6 | Willmer Peter Lawrence | 3 |
#7 | Duree Jeffrey | 3 |
#8 | Sutherland A | 3 |
#9 | Poole Colin | 3 |
#10 | Cockcroft F E | 3 |
Publication | Filing date | Title |
---|---|---|
GB8927125D0 | Pistons | |
GB8926717D0 | Piston rings | |
GB8912288D0 | Casting die | |
GB8907329D0 | Piston rings | |
GB8828028D0 | Piston rings | |
GB8800742D0 | Piston rings | |
GB8730172D0 | Piston ring | |
GB1595280A | Composite materials and methods for their production | |
GB1583349A | Pistons | |
NZ184707A | Light metal piston with two expansion control inserts, each insert having an upper band, and a lower band | |
GB1582140A | Light metal pistons | |
AU1514676A | Piston rings & spacer element | |
NZ181246A | Piston rings | |
GB1569312A | Apparatus for measuring tangential load | |
GB1561788A | Piston rings | |
US4053165A | Oil ring design | |
GB1505148A | Pistons | |
GB1501742A | Piston rings | |
US3947562A | Production of a form of alumina whiskers | |
IT1032129B | Flexible support ring with axial spacer bars - radially prestresses and locates two piston ring elements |