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STONE MANGANESE MARINE LTD

Overview
  • Total Patents
    81
About

STONE MANGANESE MARINE LTD has a total of 81 patent applications. Its first patent ever was published in 1955. It filed its patents most often in United Kingdom, Germany and France. Its main competitors in its focus markets transport, engines, pumps and turbines and mechanical elements are AIR FERTIGUNG TECHNOLOGIE GMBH, MAX PROP S R L and MURRAY & TREGURTHA INC.

Patent filings in countries

World map showing STONE MANGANESE MARINE LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 18
#2 Germany 11
#3 France 11
#4 Spain 7
#5 Norway 7
#6 Brazil 5
#7 Sweden 5
#8 Netherlands 4
#9 Finland 3
#10 United States 3
#11 Denmark 2
#12 Italy 2
#13 Japan 2
#14 Canada 1

Patent filings per year

Chart showing STONE MANGANESE MARINE LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 May E R 7
#2 May Eric Raymond 6
#3 Read T M 5
#4 Sinclair L 4
#5 Brownlie K 3
#6 Read Terence Michael 3
#7 Eames C F W 3
#8 Hutchins Maurice 3
#9 May Eric R 2
#10 Brownlie Keith 2

Latest patents

Publication Filing date Title
GB1482375A Marine-propeller assemblies
GB1497049A Screw propulsion of ships
US4021143A Marine propeller arrangement
GB1492986A Marine-propeller and propeller supporting arrangement
GB1483753A Controllable-pitch propeller systems
GB1455504A Marine propellers
GB1472544A Marine propeller ducts
DE2342788A1 SEAL ARRANGEMENT
ES413473A1 A pump actuation disposition for supplying hydraulic fluid at pressure. (Machine-translation by Google Translate, not legally binding)
CA984670A Oil-supply means for runner hubs with controllable pitch blades
US3924411A Oil-supply means for runner hubs with controllable pitch blades
ES412338A1 A transversal propulsion device for a boat. (Machine-translation by Google Translate, not legally binding)
GB1406834A Control valve actuating arrangements
GB1407211A Arrangements for supplying hydraulic fluid under pressure in a hydraulic circuit
GB1331497A Propulsion systems for ships
GB1274389A Improvements relating to the control of doors
GB1309753A Transverse propulsion units for ships
GB1277881A Improvements relating to marine propellers
GB1221201A Improvements relating to contra-rotating marine propeller drives
FR1530694A Advanced propulsion package for ships