HOGG ROBERTSON JOHN has a total of 16 patent applications. Its first patent ever was published in 1928. It filed its patents most often in United States. Its main competitors in its focus markets mechanical elements, machines and control are THOMAS B JEFFERY, DOORNE S AUTOMOBIELFABRIEK N V and HALE JESSE W.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 16 |
# | Industry | |
---|---|---|
#1 | Mechanical elements | |
#2 | Machines | |
#3 | Control | |
#4 | Transport | |
#5 | Environmental technology |
# | Technology | |
---|---|---|
#1 | Gearing | |
#2 | Systems controlling non-electric variables | |
#3 | Unspecified technologies | |
#4 | Parachutes | |
#5 | Unspecified technologies | |
#6 | Nails | |
#7 | Railway bodies | |
#8 | Pipes | |
#9 | Motor vehicles | |
#10 | Climate change mitigation in transportation |
# | Name | Total Patents |
---|---|---|
#1 | Hogg Robertson John | 16 |
#2 | Leonard Gutteridge | 2 |
#3 | Horace Howard Lionel | 1 |
#4 | Robertson Jr John | 1 |
Publication | Filing date | Title |
---|---|---|
US2321940A | Heating system | |
US2105267A | Charge cooler | |
US2092358A | Tubular joint | |
US1916533A | Variable speed friction gearing | |
US1990614A | Variable speed friction gearing | |
US1810401A | Governor | |
US1813957A | Variable friction gearing | |
US1823125A | Variable speed friction gearing | |
US1850158A | Variable friction gearing | |
US1810059A | Centrifugal governor mechanism | |
US1780540A | Governor mechanism | |
US1879508A | Variable friction gearing | |
US1772593A | Friction gearing | |
US1785285A | Centrifugal governor |